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Diffstat (limited to 'phpBB/includes/db/db_tools.php')
| -rw-r--r-- | phpBB/includes/db/db_tools.php | 2477 |
1 files changed, 0 insertions, 2477 deletions
diff --git a/phpBB/includes/db/db_tools.php b/phpBB/includes/db/db_tools.php deleted file mode 100644 index f63ff18cbe..0000000000 --- a/phpBB/includes/db/db_tools.php +++ /dev/null @@ -1,2477 +0,0 @@ -<?php -/** -* -* @package dbal -* @version $Id$ -* @copyright (c) 2007 phpBB Group -* @license http://opensource.org/licenses/gpl-license.php GNU Public License -* -*/ - -/** -* @ignore -*/ -if (!defined('IN_PHPBB')) -{ - exit; -} - -/** -* Database Tools for handling cross-db actions such as altering columns, etc. -* Currently not supported is returning SQL for creating tables. -* -* @package dbal -* @note currently not used within phpBB3, but may be utilized later. -*/ -class phpbb_db_tools -{ - /** - * Current sql layer - */ - var $sql_layer = ''; - - /** - * @var object DB object - */ - var $db = NULL; - - /** - * The Column types for every database we support - * @var array - */ - var $dbms_type_map = array( - 'mysql_41' => array( - 'INT:' => 'int(%d)', - 'BINT' => 'bigint(20)', - 'UINT' => 'mediumint(8) UNSIGNED', - 'UINT:' => 'int(%d) UNSIGNED', - 'TINT:' => 'tinyint(%d)', - 'USINT' => 'smallint(4) UNSIGNED', - 'BOOL' => 'tinyint(1) UNSIGNED', - 'VCHAR' => 'varchar(255)', - 'VCHAR:' => 'varchar(%d)', - 'CHAR:' => 'char(%d)', - 'XSTEXT' => 'text', - 'XSTEXT_UNI'=> 'varchar(100)', - 'STEXT' => 'text', - 'STEXT_UNI' => 'varchar(255)', - 'TEXT' => 'text', - 'TEXT_UNI' => 'text', - 'MTEXT' => 'mediumtext', - 'MTEXT_UNI' => 'mediumtext', - 'TIMESTAMP' => 'int(11) UNSIGNED', - 'DECIMAL' => 'decimal(5,2)', - 'DECIMAL:' => 'decimal(%d,2)', - 'PDECIMAL' => 'decimal(6,3)', - 'PDECIMAL:' => 'decimal(%d,3)', - 'VCHAR_UNI' => 'varchar(255)', - 'VCHAR_UNI:'=> 'varchar(%d)', - 'VCHAR_CI' => 'varchar(255)', - 'VARBINARY' => 'varbinary(255)', - ), - - 'mysql_40' => array( - 'INT:' => 'int(%d)', - 'BINT' => 'bigint(20)', - 'UINT' => 'mediumint(8) UNSIGNED', - 'UINT:' => 'int(%d) UNSIGNED', - 'TINT:' => 'tinyint(%d)', - 'USINT' => 'smallint(4) UNSIGNED', - 'BOOL' => 'tinyint(1) UNSIGNED', - 'VCHAR' => 'varbinary(255)', - 'VCHAR:' => 'varbinary(%d)', - 'CHAR:' => 'binary(%d)', - 'XSTEXT' => 'blob', - 'XSTEXT_UNI'=> 'blob', - 'STEXT' => 'blob', - 'STEXT_UNI' => 'blob', - 'TEXT' => 'blob', - 'TEXT_UNI' => 'blob', - 'MTEXT' => 'mediumblob', - 'MTEXT_UNI' => 'mediumblob', - 'TIMESTAMP' => 'int(11) UNSIGNED', - 'DECIMAL' => 'decimal(5,2)', - 'DECIMAL:' => 'decimal(%d,2)', - 'PDECIMAL' => 'decimal(6,3)', - 'PDECIMAL:' => 'decimal(%d,3)', - 'VCHAR_UNI' => 'blob', - 'VCHAR_UNI:'=> array('varbinary(%d)', 'limit' => array('mult', 3, 255, 'blob')), - 'VCHAR_CI' => 'blob', - 'VARBINARY' => 'varbinary(255)', - ), - - 'firebird' => array( - 'INT:' => 'INTEGER', - 'BINT' => 'DOUBLE PRECISION', - 'UINT' => 'INTEGER', - 'UINT:' => 'INTEGER', - 'TINT:' => 'INTEGER', - 'USINT' => 'INTEGER', - 'BOOL' => 'INTEGER', - 'VCHAR' => 'VARCHAR(255) CHARACTER SET NONE', - 'VCHAR:' => 'VARCHAR(%d) CHARACTER SET NONE', - 'CHAR:' => 'CHAR(%d) CHARACTER SET NONE', - 'XSTEXT' => 'BLOB SUB_TYPE TEXT CHARACTER SET NONE', - 'STEXT' => 'BLOB SUB_TYPE TEXT CHARACTER SET NONE', - 'TEXT' => 'BLOB SUB_TYPE TEXT CHARACTER SET NONE', - 'MTEXT' => 'BLOB SUB_TYPE TEXT CHARACTER SET NONE', - 'XSTEXT_UNI'=> 'VARCHAR(100) CHARACTER SET UTF8', - 'STEXT_UNI' => 'VARCHAR(255) CHARACTER SET UTF8', - 'TEXT_UNI' => 'BLOB SUB_TYPE TEXT CHARACTER SET UTF8', - 'MTEXT_UNI' => 'BLOB SUB_TYPE TEXT CHARACTER SET UTF8', - 'TIMESTAMP' => 'INTEGER', - 'DECIMAL' => 'DOUBLE PRECISION', - 'DECIMAL:' => 'DOUBLE PRECISION', - 'PDECIMAL' => 'DOUBLE PRECISION', - 'PDECIMAL:' => 'DOUBLE PRECISION', - 'VCHAR_UNI' => 'VARCHAR(255) CHARACTER SET UTF8', - 'VCHAR_UNI:'=> 'VARCHAR(%d) CHARACTER SET UTF8', - 'VCHAR_CI' => 'VARCHAR(255) CHARACTER SET UTF8', - 'VARBINARY' => 'CHAR(255) CHARACTER SET NONE', - ), - - 'mssql' => array( - 'INT:' => '[int]', - 'BINT' => '[float]', - 'UINT' => '[int]', - 'UINT:' => '[int]', - 'TINT:' => '[int]', - 'USINT' => '[int]', - 'BOOL' => '[int]', - 'VCHAR' => '[varchar] (255)', - 'VCHAR:' => '[varchar] (%d)', - 'CHAR:' => '[char] (%d)', - 'XSTEXT' => '[varchar] (1000)', - 'STEXT' => '[varchar] (3000)', - 'TEXT' => '[varchar] (8000)', - 'MTEXT' => '[text]', - 'XSTEXT_UNI'=> '[varchar] (100)', - 'STEXT_UNI' => '[varchar] (255)', - 'TEXT_UNI' => '[varchar] (4000)', - 'MTEXT_UNI' => '[text]', - 'TIMESTAMP' => '[int]', - 'DECIMAL' => '[float]', - 'DECIMAL:' => '[float]', - 'PDECIMAL' => '[float]', - 'PDECIMAL:' => '[float]', - 'VCHAR_UNI' => '[varchar] (255)', - 'VCHAR_UNI:'=> '[varchar] (%d)', - 'VCHAR_CI' => '[varchar] (255)', - 'VARBINARY' => '[varchar] (255)', - ), - - 'mssqlnative' => array( - 'INT:' => '[int]', - 'BINT' => '[float]', - 'UINT' => '[int]', - 'UINT:' => '[int]', - 'TINT:' => '[int]', - 'USINT' => '[int]', - 'BOOL' => '[int]', - 'VCHAR' => '[varchar] (255)', - 'VCHAR:' => '[varchar] (%d)', - 'CHAR:' => '[char] (%d)', - 'XSTEXT' => '[varchar] (1000)', - 'STEXT' => '[varchar] (3000)', - 'TEXT' => '[varchar] (8000)', - 'MTEXT' => '[text]', - 'XSTEXT_UNI'=> '[varchar] (100)', - 'STEXT_UNI' => '[varchar] (255)', - 'TEXT_UNI' => '[varchar] (4000)', - 'MTEXT_UNI' => '[text]', - 'TIMESTAMP' => '[int]', - 'DECIMAL' => '[float]', - 'DECIMAL:' => '[float]', - 'PDECIMAL' => '[float]', - 'PDECIMAL:' => '[float]', - 'VCHAR_UNI' => '[varchar] (255)', - 'VCHAR_UNI:'=> '[varchar] (%d)', - 'VCHAR_CI' => '[varchar] (255)', - 'VARBINARY' => '[varchar] (255)', - ), - - 'oracle' => array( - 'INT:' => 'number(%d)', - 'BINT' => 'number(20)', - 'UINT' => 'number(8)', - 'UINT:' => 'number(%d)', - 'TINT:' => 'number(%d)', - 'USINT' => 'number(4)', - 'BOOL' => 'number(1)', - 'VCHAR' => 'varchar2(255)', - 'VCHAR:' => 'varchar2(%d)', - 'CHAR:' => 'char(%d)', - 'XSTEXT' => 'varchar2(1000)', - 'STEXT' => 'varchar2(3000)', - 'TEXT' => 'clob', - 'MTEXT' => 'clob', - 'XSTEXT_UNI'=> 'varchar2(300)', - 'STEXT_UNI' => 'varchar2(765)', - 'TEXT_UNI' => 'clob', - 'MTEXT_UNI' => 'clob', - 'TIMESTAMP' => 'number(11)', - 'DECIMAL' => 'number(5, 2)', - 'DECIMAL:' => 'number(%d, 2)', - 'PDECIMAL' => 'number(6, 3)', - 'PDECIMAL:' => 'number(%d, 3)', - 'VCHAR_UNI' => 'varchar2(765)', - 'VCHAR_UNI:'=> array('varchar2(%d)', 'limit' => array('mult', 3, 765, 'clob')), - 'VCHAR_CI' => 'varchar2(255)', - 'VARBINARY' => 'raw(255)', - ), - - 'sqlite' => array( - 'INT:' => 'int(%d)', - 'BINT' => 'bigint(20)', - 'UINT' => 'INTEGER UNSIGNED', //'mediumint(8) UNSIGNED', - 'UINT:' => 'INTEGER UNSIGNED', // 'int(%d) UNSIGNED', - 'TINT:' => 'tinyint(%d)', - 'USINT' => 'INTEGER UNSIGNED', //'mediumint(4) UNSIGNED', - 'BOOL' => 'INTEGER UNSIGNED', //'tinyint(1) UNSIGNED', - 'VCHAR' => 'varchar(255)', - 'VCHAR:' => 'varchar(%d)', - 'CHAR:' => 'char(%d)', - 'XSTEXT' => 'text(65535)', - 'STEXT' => 'text(65535)', - 'TEXT' => 'text(65535)', - 'MTEXT' => 'mediumtext(16777215)', - 'XSTEXT_UNI'=> 'text(65535)', - 'STEXT_UNI' => 'text(65535)', - 'TEXT_UNI' => 'text(65535)', - 'MTEXT_UNI' => 'mediumtext(16777215)', - 'TIMESTAMP' => 'INTEGER UNSIGNED', //'int(11) UNSIGNED', - 'DECIMAL' => 'decimal(5,2)', - 'DECIMAL:' => 'decimal(%d,2)', - 'PDECIMAL' => 'decimal(6,3)', - 'PDECIMAL:' => 'decimal(%d,3)', - 'VCHAR_UNI' => 'varchar(255)', - 'VCHAR_UNI:'=> 'varchar(%d)', - 'VCHAR_CI' => 'varchar(255)', - 'VARBINARY' => 'blob', - ), - - 'postgres' => array( - 'INT:' => 'INT4', - 'BINT' => 'INT8', - 'UINT' => 'INT4', // unsigned - 'UINT:' => 'INT4', // unsigned - 'USINT' => 'INT2', // unsigned - 'BOOL' => 'INT2', // unsigned - 'TINT:' => 'INT2', - 'VCHAR' => 'varchar(255)', - 'VCHAR:' => 'varchar(%d)', - 'CHAR:' => 'char(%d)', - 'XSTEXT' => 'varchar(1000)', - 'STEXT' => 'varchar(3000)', - 'TEXT' => 'varchar(8000)', - 'MTEXT' => 'TEXT', - 'XSTEXT_UNI'=> 'varchar(100)', - 'STEXT_UNI' => 'varchar(255)', - 'TEXT_UNI' => 'varchar(4000)', - 'MTEXT_UNI' => 'TEXT', - 'TIMESTAMP' => 'INT4', // unsigned - 'DECIMAL' => 'decimal(5,2)', - 'DECIMAL:' => 'decimal(%d,2)', - 'PDECIMAL' => 'decimal(6,3)', - 'PDECIMAL:' => 'decimal(%d,3)', - 'VCHAR_UNI' => 'varchar(255)', - 'VCHAR_UNI:'=> 'varchar(%d)', - 'VCHAR_CI' => 'varchar_ci', - 'VARBINARY' => 'bytea', - ), - ); - - /** - * A list of types being unsigned for better reference in some db's - * @var array - */ - var $unsigned_types = array('UINT', 'UINT:', 'USINT', 'BOOL', 'TIMESTAMP'); - - /** - * A list of supported DBMS. We change this class to support more DBMS, the DBMS itself only need to follow some rules. - * @var array - */ - var $supported_dbms = array('firebird', 'mssql', 'mssqlnative', 'mysql_40', 'mysql_41', 'oracle', 'postgres', 'sqlite'); - - /** - * This is set to true if user only wants to return the 'to-be-executed' SQL statement(s) (as an array). - * This mode has no effect on some methods (inserting of data for example). This is expressed within the methods command. - */ - var $return_statements = false; - - /** - * Constructor. Set DB Object and set {@link $return_statements return_statements}. - * - * @param phpbb_dbal $db DBAL object - * @param bool $return_statements True if only statements should be returned and no SQL being executed - */ - function phpbb_db_tools(&$db, $return_statements = false) - { - $this->db = $db; - $this->return_statements = $return_statements; - - // Determine mapping database type - switch ($this->db->sql_layer) - { - case 'mysql': - $this->sql_layer = 'mysql_40'; - break; - - case 'mysql4': - if (version_compare($this->db->sql_server_info(true), '4.1.3', '>=')) - { - $this->sql_layer = 'mysql_41'; - } - else - { - $this->sql_layer = 'mysql_40'; - } - break; - - case 'mysqli': - $this->sql_layer = 'mysql_41'; - break; - - case 'mssql': - case 'mssql_odbc': - $this->sql_layer = 'mssql'; - break; - - case 'mssqlnative': - $this->sql_layer = 'mssqlnative'; - break; - - default: - $this->sql_layer = $this->db->sql_layer; - break; - } - } - - /** - * Gets a list of tables in the database. - * - * @return array Array of table names (all lower case) - */ - function sql_list_tables() - { - switch ($this->db->sql_layer) - { - case 'mysql': - case 'mysql4': - case 'mysqli': - $sql = 'SHOW TABLES'; - break; - - case 'sqlite': - $sql = 'SELECT name - FROM sqlite_master - WHERE type = "table"'; - break; - - case 'mssql': - case 'mssql_odbc': - case 'mssqlnative': - $sql = "SELECT name - FROM sysobjects - WHERE type='U'"; - break; - - case 'postgres': - $sql = 'SELECT relname - FROM pg_stat_user_tables'; - break; - - case 'firebird': - $sql = 'SELECT rdb$relation_name - FROM rdb$relations - WHERE rdb$view_source is null - AND rdb$system_flag = 0'; - break; - - case 'oracle': - $sql = 'SELECT table_name - FROM USER_TABLES'; - break; - } - - $result = $this->db->sql_query($sql); - - $tables = array(); - while ($row = $this->db->sql_fetchrow($result)) - { - $name = current($row); - $tables[$name] = $name; - } - $this->db->sql_freeresult($result); - - return $tables; - } - - /** - * Check if table exists - * - * - * @param string $table_name The table name to check for - * @return bool true if table exists, else false - */ - function sql_table_exists($table_name) - { - $this->db->sql_return_on_error(true); - $result = $this->db->sql_query_limit('SELECT * FROM ' . $table_name, 1); - $this->db->sql_return_on_error(false); - - if ($result) - { - $this->db->sql_freeresult($result); - return true; - } - - return false; - } - - /** - * Create SQL Table - * - * @param string $table_name The table name to create - * @param array $table_data Array containing table data. - * @return array Statements if $return_statements is true. - */ - function sql_create_table($table_name, $table_data) - { - // holds the DDL for a column - $columns = $statements = array(); - - if ($this->sql_table_exists($table_name)) - { - return $this->_sql_run_sql($statements); - } - - // Begin transaction - $statements[] = 'begin'; - - // Determine if we have created a PRIMARY KEY in the earliest - $primary_key_gen = false; - - // Determine if the table must be created with TEXTIMAGE - $create_textimage = false; - - // Determine if the table requires a sequence - $create_sequence = false; - - // Begin table sql statement - switch ($this->sql_layer) - { - case 'mssql': - case 'mssqlnative': - $table_sql = 'CREATE TABLE [' . $table_name . '] (' . "\n"; - break; - - default: - $table_sql = 'CREATE TABLE ' . $table_name . ' (' . "\n"; - break; - } - - // Iterate through the columns to create a table - foreach ($table_data['COLUMNS'] as $column_name => $column_data) - { - // here lies an array, filled with information compiled on the column's data - $prepared_column = $this->sql_prepare_column_data($table_name, $column_name, $column_data); - - if (isset($prepared_column['auto_increment']) && strlen($column_name) > 26) // "${column_name}_gen" - { - trigger_error("Index name '${column_name}_gen' on table '$table_name' is too long. The maximum auto increment column length is 26 characters.", E_USER_ERROR); - } - - // here we add the definition of the new column to the list of columns - switch ($this->sql_layer) - { - case 'mssql': - case 'mssqlnative': - $columns[] = "\t [{$column_name}] " . $prepared_column['column_type_sql_default']; - break; - - default: - $columns[] = "\t {$column_name} " . $prepared_column['column_type_sql']; - break; - } - - // see if we have found a primary key set due to a column definition if we have found it, we can stop looking - if (!$primary_key_gen) - { - $primary_key_gen = isset($prepared_column['primary_key_set']) && $prepared_column['primary_key_set']; - } - - // create textimage DDL based off of the existance of certain column types - if (!$create_textimage) - { - $create_textimage = isset($prepared_column['textimage']) && $prepared_column['textimage']; - } - - // create sequence DDL based off of the existance of auto incrementing columns - if (!$create_sequence && isset($prepared_column['auto_increment']) && $prepared_column['auto_increment']) - { - $create_sequence = $column_name; - } - } - - // this makes up all the columns in the create table statement - $table_sql .= implode(",\n", $columns); - - // Close the table for two DBMS and add to the statements - switch ($this->sql_layer) - { - case 'firebird': - $table_sql .= "\n);"; - $statements[] = $table_sql; - break; - - case 'mssql': - case 'mssqlnative': - $table_sql .= "\n) ON [PRIMARY]" . (($create_textimage) ? ' TEXTIMAGE_ON [PRIMARY]' : ''); - $statements[] = $table_sql; - break; - } - - // we have yet to create a primary key for this table, - // this means that we can add the one we really wanted instead - if (!$primary_key_gen) - { - // Write primary key - if (isset($table_data['PRIMARY_KEY'])) - { - if (!is_array($table_data['PRIMARY_KEY'])) - { - $table_data['PRIMARY_KEY'] = array($table_data['PRIMARY_KEY']); - } - - switch ($this->sql_layer) - { - case 'mysql_40': - case 'mysql_41': - case 'postgres': - case 'sqlite': - $table_sql .= ",\n\t PRIMARY KEY (" . implode(', ', $table_data['PRIMARY_KEY']) . ')'; - break; - - case 'firebird': - case 'mssql': - case 'mssqlnative': - // We need the data here - $old_return_statements = $this->return_statements; - $this->return_statements = true; - - $primary_key_stmts = $this->sql_create_primary_key($table_name, $table_data['PRIMARY_KEY']); - foreach ($primary_key_stmts as $pk_stmt) - { - $statements[] = $pk_stmt; - } - - $this->return_statements = $old_return_statements; - break; - - case 'oracle': - $table_sql .= ",\n\t CONSTRAINT pk_{$table_name} PRIMARY KEY (" . implode(', ', $table_data['PRIMARY_KEY']) . ')'; - break; - } - } - } - - // close the table - switch ($this->sql_layer) - { - case 'mysql_41': - // make sure the table is in UTF-8 mode - $table_sql .= "\n) CHARACTER SET `utf8` COLLATE `utf8_bin`;"; - $statements[] = $table_sql; - break; - - case 'mysql_40': - case 'sqlite': - $table_sql .= "\n);"; - $statements[] = $table_sql; - break; - - case 'postgres': - // do we need to add a sequence for auto incrementing columns? - if ($create_sequence) - { - $statements[] = "CREATE SEQUENCE {$table_name}_seq;"; - } - - $table_sql .= "\n);"; - $statements[] = $table_sql; - break; - - case 'oracle': - $table_sql .= "\n)"; - $statements[] = $table_sql; - - // do we need to add a sequence and a tigger for auto incrementing columns? - if ($create_sequence) - { - // create the actual sequence - $statements[] = "CREATE SEQUENCE {$table_name}_seq"; - - // the trigger is the mechanism by which we increment the counter - $trigger = "CREATE OR REPLACE TRIGGER t_{$table_name}\n"; - $trigger .= "BEFORE INSERT ON {$table_name}\n"; - $trigger .= "FOR EACH ROW WHEN (\n"; - $trigger .= "\tnew.{$create_sequence} IS NULL OR new.{$create_sequence} = 0\n"; - $trigger .= ")\n"; - $trigger .= "BEGIN\n"; - $trigger .= "\tSELECT {$table_name}_seq.nextval\n"; - $trigger .= "\tINTO :new.{$create_sequence}\n"; - $trigger .= "\tFROM dual;\n"; - $trigger .= "END;"; - - $statements[] = $trigger; - } - break; - - case 'firebird': - if ($create_sequence) - { - $statements[] = "CREATE GENERATOR {$table_name}_gen;"; - $statements[] = "SET GENERATOR {$table_name}_gen TO 0;"; - - $trigger = "CREATE TRIGGER t_$table_name FOR $table_name\n"; - $trigger .= "BEFORE INSERT\nAS\nBEGIN\n"; - $trigger .= "\tNEW.{$create_sequence} = GEN_ID({$table_name}_gen, 1);\nEND;"; - $statements[] = $trigger; - } - break; - } - - // Write Keys - if (isset($table_data['KEYS'])) - { - foreach ($table_data['KEYS'] as $key_name => $key_data) - { - if (!is_array($key_data[1])) - { - $key_data[1] = array($key_data[1]); - } - - $old_return_statements = $this->return_statements; - $this->return_statements = true; - - $key_stmts = ($key_data[0] == 'UNIQUE') ? $this->sql_create_unique_index($table_name, $key_name, $key_data[1]) : $this->sql_create_index($table_name, $key_name, $key_data[1]); - - foreach ($key_stmts as $key_stmt) - { - $statements[] = $key_stmt; - } - - $this->return_statements = $old_return_statements; - } - } - - // Commit Transaction - $statements[] = 'commit'; - - return $this->_sql_run_sql($statements); - } - - /** - * Handle passed database update array. - * Expected structure... - * Key being one of the following - * change_columns: Column changes (only type, not name) - * add_columns: Add columns to a table - * drop_keys: Dropping keys - * drop_columns: Removing/Dropping columns - * add_primary_keys: adding primary keys - * add_unique_index: adding an unique index - * add_index: adding an index (can be column:index_size if you need to provide size) - * - * The values are in this format: - * {TABLE NAME} => array( - * {COLUMN NAME} => array({COLUMN TYPE}, {DEFAULT VALUE}, {OPTIONAL VARIABLES}), - * {KEY/INDEX NAME} => array({COLUMN NAMES}), - * ) - * - * For more information have a look at /develop/create_schema_files.php (only available through SVN) - */ - function perform_schema_changes($schema_changes) - { - if (empty($schema_changes)) - { - return; - } - - $statements = array(); - $sqlite = false; - - // For SQLite we need to perform the schema changes in a much more different way - if ($this->db->sql_layer == 'sqlite' && $this->return_statements) - { - $sqlite_data = array(); - $sqlite = true; - } - - // Drop tables? - if (!empty($schema_changes['drop_tables'])) - { - foreach ($schema_changes['drop_tables'] as $table) - { - // only drop table if it exists - if ($this->sql_table_exists($table)) - { - $result = $this->sql_table_drop($table); - if ($this->return_statements) - { - $statements = array_merge($statements, $result); - } - } - } - } - - // Add tables? - if (!empty($schema_changes['add_tables'])) - { - foreach ($schema_changes['add_tables'] as $table => $table_data) - { - $result = $this->sql_create_table($table, $table_data); - if ($this->return_statements) - { - $statements = array_merge($statements, $result); - } - } - } - - // Change columns? - if (!empty($schema_changes['change_columns'])) - { - foreach ($schema_changes['change_columns'] as $table => $columns) - { - foreach ($columns as $column_name => $column_data) - { - // If the column exists we change it, else we add it ;) - if ($column_exists = $this->sql_column_exists($table, $column_name)) - { - $result = $this->sql_column_change($table, $column_name, $column_data, true); - } - else - { - $result = $this->sql_column_add($table, $column_name, $column_data, true); - } - - if ($sqlite) - { - if ($column_exists) - { - $sqlite_data[$table]['change_columns'][] = $result; - } - else - { - $sqlite_data[$table]['add_columns'][] = $result; - } - } - else if ($this->return_statements) - { - $statements = array_merge($statements, $result); - } - } - } - } - - // Add columns? - if (!empty($schema_changes['add_columns'])) - { - foreach ($schema_changes['add_columns'] as $table => $columns) - { - foreach ($columns as $column_name => $column_data) - { - // Only add the column if it does not exist yet - if ($column_exists = $this->sql_column_exists($table, $column_name)) - { - continue; - // This is commented out here because it can take tremendous time on updates -// $result = $this->sql_column_change($table, $column_name, $column_data, true); - } - else - { - $result = $this->sql_column_add($table, $column_name, $column_data, true); - } - - if ($sqlite) - { - if ($column_exists) - { - continue; -// $sqlite_data[$table]['change_columns'][] = $result; - } - else - { - $sqlite_data[$table]['add_columns'][] = $result; - } - } - else if ($this->return_statements) - { - $statements = array_merge($statements, $result); - } - } - } - } - - // Remove keys? - if (!empty($schema_changes['drop_keys'])) - { - foreach ($schema_changes['drop_keys'] as $table => $indexes) - { - foreach ($indexes as $index_name) - { - if (!$this->sql_index_exists($table, $index_name)) - { - continue; - } - - $result = $this->sql_index_drop($table, $index_name); - - if ($this->return_statements) - { - $statements = array_merge($statements, $result); - } - } - } - } - - // Drop columns? - if (!empty($schema_changes['drop_columns'])) - { - foreach ($schema_changes['drop_columns'] as $table => $columns) - { - foreach ($columns as $column) - { - // Only remove the column if it exists... - if ($this->sql_column_exists($table, $column)) - { - $result = $this->sql_column_remove($table, $column, true); - - if ($sqlite) - { - $sqlite_data[$table]['drop_columns'][] = $result; - } - else if ($this->return_statements) - { - $statements = array_merge($statements, $result); - } - } - } - } - } - - // Add primary keys? - if (!empty($schema_changes['add_primary_keys'])) - { - foreach ($schema_changes['add_primary_keys'] as $table => $columns) - { - $result = $this->sql_create_primary_key($table, $columns, true); - - if ($sqlite) - { - $sqlite_data[$table]['primary_key'] = $result; - } - else if ($this->return_statements) - { - $statements = array_merge($statements, $result); - } - } - } - - // Add unqiue indexes? - if (!empty($schema_changes['add_unique_index'])) - { - foreach ($schema_changes['add_unique_index'] as $table => $index_array) - { - foreach ($index_array as $index_name => $column) - { - if ($this->sql_unique_index_exists($table, $index_name)) - { - continue; - } - - $result = $this->sql_create_unique_index($table, $index_name, $column); - - if ($this->return_statements) - { - $statements = array_merge($statements, $result); - } - } - } - } - - // Add indexes? - if (!empty($schema_changes['add_index'])) - { - foreach ($schema_changes['add_index'] as $table => $index_array) - { - foreach ($index_array as $index_name => $column) - { - if ($this->sql_index_exists($table, $index_name)) - { - continue; - } - - $result = $this->sql_create_index($table, $index_name, $column); - - if ($this->return_statements) - { - $statements = array_merge($statements, $result); - } - } - } - } - - if ($sqlite) - { - foreach ($sqlite_data as $table_name => $sql_schema_changes) - { - // Create temporary table with original data - $statements[] = 'begin'; - - $sql = "SELECT sql - FROM sqlite_master - WHERE type = 'table' - AND name = '{$table_name}' - ORDER BY type DESC, name;"; - $result = $this->db->sql_query($sql); - - if (!$result) - { - continue; - } - - $row = $this->db->sql_fetchrow($result); - $this->db->sql_freeresult($result); - - // Create a backup table and populate it, destroy the existing one - $statements[] = preg_replace('#CREATE\s+TABLE\s+"?' . $table_name . '"?#i', 'CREATE TEMPORARY TABLE ' . $table_name . '_temp', $row['sql']); - $statements[] = 'INSERT INTO ' . $table_name . '_temp SELECT * FROM ' . $table_name; - $statements[] = 'DROP TABLE ' . $table_name; - - // Get the columns... - preg_match('#\((.*)\)#s', $row['sql'], $matches); - - $plain_table_cols = trim($matches[1]); - $new_table_cols = preg_split('/,(?![\s\w]+\))/m', $plain_table_cols); - $column_list = array(); - - foreach ($new_table_cols as $declaration) - { - $entities = preg_split('#\s+#', trim($declaration)); - if ($entities[0] == 'PRIMARY') - { - continue; - } - $column_list[] = $entities[0]; - } - - // note down the primary key notation because sqlite only supports adding it to the end for the new table - $primary_key = false; - $_new_cols = array(); - - foreach ($new_table_cols as $key => $declaration) - { - $entities = preg_split('#\s+#', trim($declaration)); - if ($entities[0] == 'PRIMARY') - { - $primary_key = $declaration; - continue; - } - $_new_cols[] = $declaration; - } - - $new_table_cols = $_new_cols; - - // First of all... change columns - if (!empty($sql_schema_changes['change_columns'])) - { - foreach ($sql_schema_changes['change_columns'] as $column_sql) - { - foreach ($new_table_cols as $key => $declaration) - { - $entities = preg_split('#\s+#', trim($declaration)); - if (strpos($column_sql, $entities[0] . ' ') === 0) - { - $new_table_cols[$key] = $column_sql; - } - } - } - } - - if (!empty($sql_schema_changes['add_columns'])) - { - foreach ($sql_schema_changes['add_columns'] as $column_sql) - { - $new_table_cols[] = $column_sql; - } - } - - // Now drop them... - if (!empty($sql_schema_changes['drop_columns'])) - { - foreach ($sql_schema_changes['drop_columns'] as $column_name) - { - // Remove from column list... - $new_column_list = array(); - foreach ($column_list as $key => $value) - { - if ($value === $column_name) - { - continue; - } - - $new_column_list[] = $value; - } - - $column_list = $new_column_list; - - // Remove from table... - $_new_cols = array(); - foreach ($new_table_cols as $key => $declaration) - { - $entities = preg_split('#\s+#', trim($declaration)); - if (strpos($column_name . ' ', $entities[0] . ' ') === 0) - { - continue; - } - $_new_cols[] = $declaration; - } - $new_table_cols = $_new_cols; - } - } - - // Primary key... - if (!empty($sql_schema_changes['primary_key'])) - { - $new_table_cols[] = 'PRIMARY KEY (' . implode(', ', $sql_schema_changes['primary_key']) . ')'; - } - // Add a new one or the old primary key - else if ($primary_key !== false) - { - $new_table_cols[] = $primary_key; - } - - $columns = implode(',', $column_list); - - // create a new table and fill it up. destroy the temp one - $statements[] = 'CREATE TABLE ' . $table_name . ' (' . implode(',', $new_table_cols) . ');'; - $statements[] = 'INSERT INTO ' . $table_name . ' (' . $columns . ') SELECT ' . $columns . ' FROM ' . $table_name . '_temp;'; - $statements[] = 'DROP TABLE ' . $table_name . '_temp'; - - $statements[] = 'commit'; - } - } - - if ($this->return_statements) - { - return $statements; - } - } - - /** - * Gets a list of columns of a table. - * - * @param string $table Table name - * - * @return array Array of column names (all lower case) - */ - function sql_list_columns($table) - { - $columns = array(); - - switch ($this->sql_layer) - { - case 'mysql_40': - case 'mysql_41': - $sql = "SHOW COLUMNS FROM $table"; - break; - - // PostgreSQL has a way of doing this in a much simpler way but would - // not allow us to support all versions of PostgreSQL - case 'postgres': - $sql = "SELECT a.attname - FROM pg_class c, pg_attribute a - WHERE c.relname = '{$table}' - AND a.attnum > 0 - AND a.attrelid = c.oid"; - break; - - // same deal with PostgreSQL, we must perform more complex operations than - // we technically could - case 'mssql': - case 'mssqlnative': - $sql = "SELECT c.name - FROM syscolumns c - LEFT JOIN sysobjects o ON c.id = o.id - WHERE o.name = '{$table}'"; - break; - - case 'oracle': - $sql = "SELECT column_name - FROM user_tab_columns - WHERE LOWER(table_name) = '" . strtolower($table) . "'"; - break; - - case 'firebird': - $sql = "SELECT RDB\$FIELD_NAME as FNAME - FROM RDB\$RELATION_FIELDS - WHERE RDB\$RELATION_NAME = '" . strtoupper($table) . "'"; - break; - - case 'sqlite': - $sql = "SELECT sql - FROM sqlite_master - WHERE type = 'table' - AND name = '{$table}'"; - - $result = $this->db->sql_query($sql); - - if (!$result) - { - return false; - } - - $row = $this->db->sql_fetchrow($result); - $this->db->sql_freeresult($result); - - preg_match('#\((.*)\)#s', $row['sql'], $matches); - - $cols = trim($matches[1]); - $col_array = preg_split('/,(?![\s\w]+\))/m', $cols); - - foreach ($col_array as $declaration) - { - $entities = preg_split('#\s+#', trim($declaration)); - if ($entities[0] == 'PRIMARY') - { - continue; - } - - $column = strtolower($entities[0]); - $columns[$column] = $column; - } - - return $columns; - break; - } - - $result = $this->db->sql_query($sql); - - while ($row = $this->db->sql_fetchrow($result)) - { - $column = strtolower(current($row)); - $columns[$column] = $column; - } - $this->db->sql_freeresult($result); - - return $columns; - } - - /** - * Check whether a specified column exist in a table - * - * @param string $table Table to check - * @param string $column_name Column to check - * - * @return bool True if column exists, false otherwise - */ - function sql_column_exists($table, $column_name) - { - $columns = $this->sql_list_columns($table); - - return isset($columns[$column_name]); - } - - /** - * Check if a specified index exists in table. Does not return PRIMARY KEY and UNIQUE indexes. - * - * @param string $table_name Table to check the index at - * @param string $index_name The index name to check - * - * @return bool True if index exists, else false - */ - function sql_index_exists($table_name, $index_name) - { - if ($this->sql_layer == 'mssql' || $this->sql_layer == 'mssqlnative') - { - $sql = "EXEC sp_statistics '$table_name'"; - $result = $this->db->sql_query($sql); - - while ($row = $this->db->sql_fetchrow($result)) - { - if ($row['TYPE'] == 3) - { - if (strtolower($row['INDEX_NAME']) == strtolower($index_name)) - { - $this->db->sql_freeresult($result); - return true; - } - } - } - $this->db->sql_freeresult($result); - - return false; - } - - switch ($this->sql_layer) - { - case 'firebird': - $sql = "SELECT LOWER(RDB\$INDEX_NAME) as index_name - FROM RDB\$INDICES - WHERE RDB\$RELATION_NAME = '" . strtoupper($table_name) . "' - AND RDB\$UNIQUE_FLAG IS NULL - AND RDB\$FOREIGN_KEY IS NULL"; - $col = 'index_name'; - break; - - case 'postgres': - $sql = "SELECT ic.relname as index_name - FROM pg_class bc, pg_class ic, pg_index i - WHERE (bc.oid = i.indrelid) - AND (ic.oid = i.indexrelid) - AND (bc.relname = '" . $table_name . "') - AND (i.indisunique != 't') - AND (i.indisprimary != 't')"; - $col = 'index_name'; - break; - - case 'mysql_40': - case 'mysql_41': - $sql = 'SHOW KEYS - FROM ' . $table_name; - $col = 'Key_name'; - break; - - case 'oracle': - $sql = "SELECT index_name - FROM user_indexes - WHERE table_name = '" . strtoupper($table_name) . "' - AND generated = 'N' - AND uniqueness = 'NONUNIQUE'"; - $col = 'index_name'; - break; - - case 'sqlite': - $sql = "PRAGMA index_list('" . $table_name . "');"; - $col = 'name'; - break; - } - - $result = $this->db->sql_query($sql); - while ($row = $this->db->sql_fetchrow($result)) - { - if (($this->sql_layer == 'mysql_40' || $this->sql_layer == 'mysql_41') && !$row['Non_unique']) - { - continue; - } - - // These DBMS prefix index name with the table name - switch ($this->sql_layer) - { - case 'firebird': - case 'oracle': - case 'postgres': - case 'sqlite': - $row[$col] = substr($row[$col], strlen($table_name) + 1); - break; - } - - if (strtolower($row[$col]) == strtolower($index_name)) - { - $this->db->sql_freeresult($result); - return true; - } - } - $this->db->sql_freeresult($result); - - return false; - } - - /** - * Check if a specified index exists in table. Does not return PRIMARY KEY and UNIQUE indexes. - * - * @param string $table_name Table to check the index at - * @param string $index_name The index name to check - * - * @return bool True if index exists, else false - */ - function sql_unique_index_exists($table_name, $index_name) - { - if ($this->sql_layer == 'mssql' || $this->sql_layer == 'mssqlnative') - { - $sql = "EXEC sp_statistics '$table_name'"; - $result = $this->db->sql_query($sql); - - while ($row = $this->db->sql_fetchrow($result)) - { - // Usually NON_UNIQUE is the column we want to check, but we allow for both - if ($row['TYPE'] == 3) - { - if (strtolower($row['INDEX_NAME']) == strtolower($index_name)) - { - $this->db->sql_freeresult($result); - return true; - } - } - } - $this->db->sql_freeresult($result); - return false; - } - - switch ($this->sql_layer) - { - case 'firebird': - $sql = "SELECT LOWER(RDB\$INDEX_NAME) as index_name - FROM RDB\$INDICES - WHERE RDB\$RELATION_NAME = '" . strtoupper($table_name) . "' - AND RDB\$UNIQUE_FLAG IS NOT NULL - AND RDB\$FOREIGN_KEY IS NULL"; - $col = 'index_name'; - break; - - case 'postgres': - $sql = "SELECT ic.relname as index_name, i.indisunique - FROM pg_class bc, pg_class ic, pg_index i - WHERE (bc.oid = i.indrelid) - AND (ic.oid = i.indexrelid) - AND (bc.relname = '" . $table_name . "') - AND (i.indisprimary != 't')"; - $col = 'index_name'; - break; - - case 'mysql_40': - case 'mysql_41': - $sql = 'SHOW KEYS - FROM ' . $table_name; - $col = 'Key_name'; - break; - - case 'oracle': - $sql = "SELECT index_name, table_owner - FROM user_indexes - WHERE table_name = '" . strtoupper($table_name) . "' - AND generated = 'N' - AND uniqueness = 'UNIQUE'"; - $col = 'index_name'; - break; - - case 'sqlite': - $sql = "PRAGMA index_list('" . $table_name . "');"; - $col = 'name'; - break; - } - - $result = $this->db->sql_query($sql); - while ($row = $this->db->sql_fetchrow($result)) - { - if (($this->sql_layer == 'mysql_40' || $this->sql_layer == 'mysql_41') && ($row['Non_unique'] || $row[$col] == 'PRIMARY')) - { - continue; - } - - if ($this->sql_layer == 'sqlite' && !$row['unique']) - { - continue; - } - - if ($this->sql_layer == 'postgres' && $row['indisunique'] != 't') - { - continue; - } - - // These DBMS prefix index name with the table name - switch ($this->sql_layer) - { - case 'oracle': - // Two cases here... prefixed with U_[table_owner] and not prefixed with table_name - if (strpos($row[$col], 'U_') === 0) - { - $row[$col] = substr($row[$col], strlen('U_' . $row['table_owner']) + 1); - } - else if (strpos($row[$col], strtoupper($table_name)) === 0) - { - $row[$col] = substr($row[$col], strlen($table_name) + 1); - } - break; - - case 'firebird': - case 'postgres': - case 'sqlite': - $row[$col] = substr($row[$col], strlen($table_name) + 1); - break; - } - - if (strtolower($row[$col]) == strtolower($index_name)) - { - $this->db->sql_freeresult($result); - return true; - } - } - $this->db->sql_freeresult($result); - - return false; - } - - /** - * Private method for performing sql statements (either execute them or return them) - * @access private - */ - function _sql_run_sql($statements) - { - if ($this->return_statements) - { - return $statements; - } - - // We could add error handling here... - foreach ($statements as $sql) - { - if ($sql === 'begin') - { - $this->db->sql_transaction('begin'); - } - else if ($sql === 'commit') - { - $this->db->sql_transaction('commit'); - } - else - { - $this->db->sql_query($sql); - } - } - - return true; - } - - /** - * Function to prepare some column information for better usage - * @access private - */ - function sql_prepare_column_data($table_name, $column_name, $column_data) - { - if (strlen($column_name) > 30) - { - trigger_error("Column name '$column_name' on table '$table_name' is too long. The maximum is 30 characters.", E_USER_ERROR); - } - - // Get type - if (strpos($column_data[0], ':') !== false) - { - list($orig_column_type, $column_length) = explode(':', $column_data[0]); - if (!is_array($this->dbms_type_map[$this->sql_layer][$orig_column_type . ':'])) - { - $column_type = sprintf($this->dbms_type_map[$this->sql_layer][$orig_column_type . ':'], $column_length); - } - else - { - if (isset($this->dbms_type_map[$this->sql_layer][$orig_column_type . ':']['rule'])) - { - switch ($this->dbms_type_map[$this->sql_layer][$orig_column_type . ':']['rule'][0]) - { - case 'div': - $column_length /= $this->dbms_type_map[$this->sql_layer][$orig_column_type . ':']['rule'][1]; - $column_length = ceil($column_length); - $column_type = sprintf($this->dbms_type_map[$this->sql_layer][$orig_column_type . ':'][0], $column_length); - break; - } - } - - if (isset($this->dbms_type_map[$this->sql_layer][$orig_column_type . ':']['limit'])) - { - switch ($this->dbms_type_map[$this->sql_layer][$orig_column_type . ':']['limit'][0]) - { - case 'mult': - $column_length *= $this->dbms_type_map[$this->sql_layer][$orig_column_type . ':']['limit'][1]; - if ($column_length > $this->dbms_type_map[$this->sql_layer][$orig_column_type . ':']['limit'][2]) - { - $column_type = $this->dbms_type_map[$this->sql_layer][$orig_column_type . ':']['limit'][3]; - } - else - { - $column_type = sprintf($this->dbms_type_map[$this->sql_layer][$orig_column_type . ':'][0], $column_length); - } - break; - } - } - } - $orig_column_type .= ':'; - } - else - { - $orig_column_type = $column_data[0]; - $column_type = $this->dbms_type_map[$this->sql_layer][$column_data[0]]; - } - - // Adjust default value if db-dependant specified - if (is_array($column_data[1])) - { - $column_data[1] = (isset($column_data[1][$this->sql_layer])) ? $column_data[1][$this->sql_layer] : $column_data[1]['default']; - } - - $sql = ''; - - $return_array = array(); - - switch ($this->sql_layer) - { - case 'firebird': - $sql .= " {$column_type} "; - $return_array['column_type_sql_type'] = " {$column_type} "; - - if (!is_null($column_data[1])) - { - $sql .= 'DEFAULT ' . ((is_numeric($column_data[1])) ? $column_data[1] : "'{$column_data[1]}'") . ' '; - $return_array['column_type_sql_default'] = ((is_numeric($column_data[1])) ? $column_data[1] : "'{$column_data[1]}'") . ' '; - } - - $sql .= 'NOT NULL'; - - // This is a UNICODE column and thus should be given it's fair share - if (preg_match('/^X?STEXT_UNI|VCHAR_(CI|UNI:?)/', $column_data[0])) - { - $sql .= ' COLLATE UNICODE'; - } - - $return_array['auto_increment'] = false; - if (isset($column_data[2]) && $column_data[2] == 'auto_increment') - { - $return_array['auto_increment'] = true; - } - - break; - - case 'mssql': - case 'mssqlnative': - $sql .= " {$column_type} "; - $sql_default = " {$column_type} "; - - // For adding columns we need the default definition - if (!is_null($column_data[1])) - { - // For hexadecimal values do not use single quotes - if (strpos($column_data[1], '0x') === 0) - { - $return_array['default'] = 'DEFAULT (' . $column_data[1] . ') '; - $sql_default .= $return_array['default']; - } - else - { - $return_array['default'] = 'DEFAULT (' . ((is_numeric($column_data[1])) ? $column_data[1] : "'{$column_data[1]}'") . ') '; - $sql_default .= $return_array['default']; - } - } - - if (isset($column_data[2]) && $column_data[2] == 'auto_increment') - { -// $sql .= 'IDENTITY (1, 1) '; - $sql_default .= 'IDENTITY (1, 1) '; - } - - $return_array['textimage'] = $column_type === '[text]'; - - $sql .= 'NOT NULL'; - $sql_default .= 'NOT NULL'; - - $return_array['column_type_sql_default'] = $sql_default; - - break; - - case 'mysql_40': - case 'mysql_41': - $sql .= " {$column_type} "; - - // For hexadecimal values do not use single quotes - if (!is_null($column_data[1]) && substr($column_type, -4) !== 'text' && substr($column_type, -4) !== 'blob') - { - $sql .= (strpos($column_data[1], '0x') === 0) ? "DEFAULT {$column_data[1]} " : "DEFAULT '{$column_data[1]}' "; - } - $sql .= 'NOT NULL'; - - if (isset($column_data[2])) - { - if ($column_data[2] == 'auto_increment') - { - $sql .= ' auto_increment'; - } - else if ($this->sql_layer === 'mysql_41' && $column_data[2] == 'true_sort') - { - $sql .= ' COLLATE utf8_unicode_ci'; - } - } - - break; - - case 'oracle': - $sql .= " {$column_type} "; - $sql .= (!is_null($column_data[1])) ? "DEFAULT '{$column_data[1]}' " : ''; - - // In Oracle empty strings ('') are treated as NULL. - // Therefore in oracle we allow NULL's for all DEFAULT '' entries - // Oracle does not like setting NOT NULL on a column that is already NOT NULL (this happens only on number fields) - if (!preg_match('/number/i', $column_type)) - { - $sql .= ($column_data[1] === '') ? '' : 'NOT NULL'; - } - - $return_array['auto_increment'] = false; - if (isset($column_data[2]) && $column_data[2] == 'auto_increment') - { - $return_array['auto_increment'] = true; - } - - break; - - case 'postgres': - $return_array['column_type'] = $column_type; - - $sql .= " {$column_type} "; - - $return_array['auto_increment'] = false; - if (isset($column_data[2]) && $column_data[2] == 'auto_increment') - { - $default_val = "nextval('{$table_name}_seq')"; - $return_array['auto_increment'] = true; - } - else if (!is_null($column_data[1])) - { - $default_val = "'" . $column_data[1] . "'"; - $return_array['null'] = 'NOT NULL'; - $sql .= 'NOT NULL '; - } - - $return_array['default'] = $default_val; - - $sql .= "DEFAULT {$default_val}"; - - // Unsigned? Then add a CHECK contraint - if (in_array($orig_column_type, $this->unsigned_types)) - { - $return_array['constraint'] = "CHECK ({$column_name} >= 0)"; - $sql .= " CHECK ({$column_name} >= 0)"; - } - - break; - - case 'sqlite': - $return_array['primary_key_set'] = false; - if (isset($column_data[2]) && $column_data[2] == 'auto_increment') - { - $sql .= ' INTEGER PRIMARY KEY'; - $return_array['primary_key_set'] = true; - } - else - { - $sql .= ' ' . $column_type; - } - - $sql .= ' NOT NULL '; - $sql .= (!is_null($column_data[1])) ? "DEFAULT '{$column_data[1]}'" : ''; - - break; - } - - $return_array['column_type_sql'] = $sql; - - return $return_array; - } - - /** - * Add new column - */ - function sql_column_add($table_name, $column_name, $column_data, $inline = false) - { - $column_data = $this->sql_prepare_column_data($table_name, $column_name, $column_data); - $statements = array(); - - switch ($this->sql_layer) - { - case 'firebird': - // Does not support AFTER statement, only POSITION (and there you need the column position) - $statements[] = 'ALTER TABLE ' . $table_name . ' ADD "' . strtoupper($column_name) . '" ' . $column_data['column_type_sql']; - break; - - case 'mssql': - case 'mssqlnative': - // Does not support AFTER, only through temporary table - $statements[] = 'ALTER TABLE [' . $table_name . '] ADD [' . $column_name . '] ' . $column_data['column_type_sql_default']; - break; - - case 'mysql_40': - case 'mysql_41': - $after = (!empty($column_data['after'])) ? ' AFTER ' . $column_data['after'] : ''; - $statements[] = 'ALTER TABLE `' . $table_name . '` ADD COLUMN `' . $column_name . '` ' . $column_data['column_type_sql'] . $after; - break; - - case 'oracle': - // Does not support AFTER, only through temporary table - $statements[] = 'ALTER TABLE ' . $table_name . ' ADD ' . $column_name . ' ' . $column_data['column_type_sql']; - break; - - case 'postgres': - // Does not support AFTER, only through temporary table - if (version_compare($this->db->sql_server_info(true), '8.0', '>=')) - { - $statements[] = 'ALTER TABLE ' . $table_name . ' ADD COLUMN "' . $column_name . '" ' . $column_data['column_type_sql']; - } - else - { - // old versions cannot add columns with default and null information - $statements[] = 'ALTER TABLE ' . $table_name . ' ADD COLUMN "' . $column_name . '" ' . $column_data['column_type'] . ' ' . $column_data['constraint']; - - if (isset($column_data['null'])) - { - if ($column_data['null'] == 'NOT NULL') - { - $statements[] = 'ALTER TABLE ' . $table_name . ' ALTER COLUMN ' . $column_name . ' SET NOT NULL'; - } - } - - if (isset($column_data['default'])) - { - $statements[] = 'ALTER TABLE ' . $table_name . ' ALTER COLUMN ' . $column_name . ' SET DEFAULT ' . $column_data['default']; - } - } - - break; - - case 'sqlite': - - if ($inline && $this->return_statements) - { - return $column_name . ' ' . $column_data['column_type_sql']; - } - - if (version_compare(sqlite_libversion(), '3.0') == -1) - { - $sql = "SELECT sql - FROM sqlite_master - WHERE type = 'table' - AND name = '{$table_name}' - ORDER BY type DESC, name;"; - $result = $this->db->sql_query($sql); - - if (!$result) - { - break; - } - - $row = $this->db->sql_fetchrow($result); - $this->db->sql_freeresult($result); - - $statements[] = 'begin'; - - // Create a backup table and populate it, destroy the existing one - $statements[] = preg_replace('#CREATE\s+TABLE\s+"?' . $table_name . '"?#i', 'CREATE TEMPORARY TABLE ' . $table_name . '_temp', $row['sql']); - $statements[] = 'INSERT INTO ' . $table_name . '_temp SELECT * FROM ' . $table_name; - $statements[] = 'DROP TABLE ' . $table_name; - - preg_match('#\((.*)\)#s', $row['sql'], $matches); - - $new_table_cols = trim($matches[1]); - $old_table_cols = preg_split('/,(?![\s\w]+\))/m', $new_table_cols); - $column_list = array(); - - foreach ($old_table_cols as $declaration) - { - $entities = preg_split('#\s+#', trim($declaration)); - if ($entities[0] == 'PRIMARY') - { - continue; - } - $column_list[] = $entities[0]; - } - - $columns = implode(',', $column_list); - - $new_table_cols = $column_name . ' ' . $column_data['column_type_sql'] . ',' . $new_table_cols; - - // create a new table and fill it up. destroy the temp one - $statements[] = 'CREATE TABLE ' . $table_name . ' (' . $new_table_cols . ');'; - $statements[] = 'INSERT INTO ' . $table_name . ' (' . $columns . ') SELECT ' . $columns . ' FROM ' . $table_name . '_temp;'; - $statements[] = 'DROP TABLE ' . $table_name . '_temp'; - - $statements[] = 'commit'; - } - else - { - $statements[] = 'ALTER TABLE ' . $table_name . ' ADD ' . $column_name . ' [' . $column_data['column_type_sql'] . ']'; - } - break; - } - - return $this->_sql_run_sql($statements); - } - - /** - * Drop column - */ - function sql_column_remove($table_name, $column_name, $inline = false) - { - $statements = array(); - - switch ($this->sql_layer) - { - case 'firebird': - $statements[] = 'ALTER TABLE ' . $table_name . ' DROP "' . strtoupper($column_name) . '"'; - break; - - case 'mssql': - case 'mssqlnative': - // remove default cosntraints first - // http://msdn.microsoft.com/en-us/library/aa175912%28v=sql.80%29.aspx - $statements[] = "DECLARE @drop_default_name VARCHAR(100), @cmd VARCHAR(1000) - SET @drop_default_name = - (SELECT so.name FROM sysobjects so - JOIN sysconstraints sc ON so.id = sc.constid - WHERE object_name(so.parent_obj) = '{$table_name}' - AND so.xtype = 'D' - AND sc.colid = (SELECT colid FROM syscolumns - WHERE id = object_id('{$table_name}') - AND name = '{$column_name}')) - IF @drop_default_name <> '' - BEGIN - SET @cmd = 'ALTER TABLE [{$table_name}] DROP CONSTRAINT [' + @drop_default_name + ']' - EXEC(@cmd) - END"; - $statements[] = 'ALTER TABLE [' . $table_name . '] DROP COLUMN [' . $column_name . ']'; - break; - - case 'mysql_40': - case 'mysql_41': - $statements[] = 'ALTER TABLE `' . $table_name . '` DROP COLUMN `' . $column_name . '`'; - break; - - case 'oracle': - $statements[] = 'ALTER TABLE ' . $table_name . ' DROP COLUMN ' . $column_name; - break; - - case 'postgres': - $statements[] = 'ALTER TABLE ' . $table_name . ' DROP COLUMN "' . $column_name . '"'; - break; - - case 'sqlite': - - if ($inline && $this->return_statements) - { - return $column_name; - } - - if (version_compare(sqlite_libversion(), '3.0') == -1) - { - $sql = "SELECT sql - FROM sqlite_master - WHERE type = 'table' - AND name = '{$table_name}' - ORDER BY type DESC, name;"; - $result = $this->db->sql_query($sql); - - if (!$result) - { - break; - } - - $row = $this->db->sql_fetchrow($result); - $this->db->sql_freeresult($result); - - $statements[] = 'begin'; - - // Create a backup table and populate it, destroy the existing one - $statements[] = preg_replace('#CREATE\s+TABLE\s+"?' . $table_name . '"?#i', 'CREATE TEMPORARY TABLE ' . $table_name . '_temp', $row['sql']); - $statements[] = 'INSERT INTO ' . $table_name . '_temp SELECT * FROM ' . $table_name; - $statements[] = 'DROP TABLE ' . $table_name; - - preg_match('#\((.*)\)#s', $row['sql'], $matches); - - $new_table_cols = trim($matches[1]); - $old_table_cols = preg_split('/,(?![\s\w]+\))/m', $new_table_cols); - $column_list = array(); - - foreach ($old_table_cols as $declaration) - { - $entities = preg_split('#\s+#', trim($declaration)); - if ($entities[0] == 'PRIMARY' || $entities[0] === $column_name) - { - continue; - } - $column_list[] = $entities[0]; - } - - $columns = implode(',', $column_list); - - $new_table_cols = preg_replace('/' . $column_name . '[^,]+(?:,|$)/m', '', $new_table_cols); - - // create a new table and fill it up. destroy the temp one - $statements[] = 'CREATE TABLE ' . $table_name . ' (' . $new_table_cols . ');'; - $statements[] = 'INSERT INTO ' . $table_name . ' (' . $columns . ') SELECT ' . $columns . ' FROM ' . $table_name . '_temp;'; - $statements[] = 'DROP TABLE ' . $table_name . '_temp'; - - $statements[] = 'commit'; - } - else - { - $statements[] = 'ALTER TABLE ' . $table_name . ' DROP COLUMN ' . $column_name; - } - break; - } - - return $this->_sql_run_sql($statements); - } - - /** - * Drop Index - */ - function sql_index_drop($table_name, $index_name) - { - $statements = array(); - - switch ($this->sql_layer) - { - case 'mssql': - case 'mssqlnative': - $statements[] = 'DROP INDEX ' . $table_name . '.' . $index_name; - break; - - case 'mysql_40': - case 'mysql_41': - $statements[] = 'DROP INDEX ' . $index_name . ' ON ' . $table_name; - break; - - case 'firebird': - case 'oracle': - case 'postgres': - case 'sqlite': - $statements[] = 'DROP INDEX ' . $table_name . '_' . $index_name; - break; - } - - return $this->_sql_run_sql($statements); - } - - /** - * Drop Table - */ - function sql_table_drop($table_name) - { - $statements = array(); - - if (!$this->sql_table_exists($table_name)) - { - return $this->_sql_run_sql($statements); - } - - // the most basic operation, get rid of the table - $statements[] = 'DROP TABLE ' . $table_name; - - switch ($this->sql_layer) - { - case 'firebird': - $sql = 'SELECT RDB$GENERATOR_NAME as gen - FROM RDB$GENERATORS - WHERE RDB$SYSTEM_FLAG = 0 - AND RDB$GENERATOR_NAME = \'' . strtoupper($table_name) . "_GEN'"; - $result = $this->db->sql_query($sql); - - // does a generator exist? - if ($row = $this->db->sql_fetchrow($result)) - { - $statements[] = "DROP GENERATOR {$row['gen']};"; - } - $this->db->sql_freeresult($result); - break; - - case 'oracle': - $sql = 'SELECT A.REFERENCED_NAME - FROM USER_DEPENDENCIES A, USER_TRIGGERS B - WHERE A.REFERENCED_TYPE = \'SEQUENCE\' - AND A.NAME = B.TRIGGER_NAME - AND B.TABLE_NAME = \'' . strtoupper($table_name) . "'"; - $result = $this->db->sql_query($sql); - - // any sequences ref'd to this table's triggers? - while ($row = $this->db->sql_fetchrow($result)) - { - $statements[] = "DROP SEQUENCE {$row['referenced_name']}"; - } - $this->db->sql_freeresult($result); - break; - - case 'postgres': - // PGSQL does not "tightly" bind sequences and tables, we must guess... - $sql = "SELECT relname - FROM pg_class - WHERE relkind = 'S' - AND relname = '{$table_name}_seq'"; - $result = $this->db->sql_query($sql); - - // We don't even care about storing the results. We already know the answer if we get rows back. - if ($this->db->sql_fetchrow($result)) - { - $statements[] = "DROP SEQUENCE {$table_name}_seq;\n"; - } - $this->db->sql_freeresult($result); - break; - } - - return $this->_sql_run_sql($statements); - } - - /** - * Add primary key - */ - function sql_create_primary_key($table_name, $column, $inline = false) - { - $statements = array(); - - switch ($this->sql_layer) - { - case 'firebird': - case 'postgres': - case 'mysql_40': - case 'mysql_41': - $statements[] = 'ALTER TABLE ' . $table_name . ' ADD PRIMARY KEY (' . implode(', ', $column) . ')'; - break; - - case 'mssql': - case 'mssqlnative': - $sql = "ALTER TABLE [{$table_name}] WITH NOCHECK ADD "; - $sql .= "CONSTRAINT [PK_{$table_name}] PRIMARY KEY CLUSTERED ("; - $sql .= '[' . implode("],\n\t\t[", $column) . ']'; - $sql .= ') ON [PRIMARY]'; - - $statements[] = $sql; - break; - - case 'oracle': - $statements[] = 'ALTER TABLE ' . $table_name . 'add CONSTRAINT pk_' . $table_name . ' PRIMARY KEY (' . implode(', ', $column) . ')'; - break; - - case 'sqlite': - - if ($inline && $this->return_statements) - { - return $column; - } - - $sql = "SELECT sql - FROM sqlite_master - WHERE type = 'table' - AND name = '{$table_name}' - ORDER BY type DESC, name;"; - $result = $this->db->sql_query($sql); - - if (!$result) - { - break; - } - - $row = $this->db->sql_fetchrow($result); - $this->db->sql_freeresult($result); - - $statements[] = 'begin'; - - // Create a backup table and populate it, destroy the existing one - $statements[] = preg_replace('#CREATE\s+TABLE\s+"?' . $table_name . '"?#i', 'CREATE TEMPORARY TABLE ' . $table_name . '_temp', $row['sql']); - $statements[] = 'INSERT INTO ' . $table_name . '_temp SELECT * FROM ' . $table_name; - $statements[] = 'DROP TABLE ' . $table_name; - - preg_match('#\((.*)\)#s', $row['sql'], $matches); - - $new_table_cols = trim($matches[1]); - $old_table_cols = preg_split('/,(?![\s\w]+\))/m', $new_table_cols); - $column_list = array(); - - foreach ($old_table_cols as $declaration) - { - $entities = preg_split('#\s+#', trim($declaration)); - if ($entities[0] == 'PRIMARY') - { - continue; - } - $column_list[] = $entities[0]; - } - - $columns = implode(',', $column_list); - - // create a new table and fill it up. destroy the temp one - $statements[] = 'CREATE TABLE ' . $table_name . ' (' . $new_table_cols . ', PRIMARY KEY (' . implode(', ', $column) . '));'; - $statements[] = 'INSERT INTO ' . $table_name . ' (' . $columns . ') SELECT ' . $columns . ' FROM ' . $table_name . '_temp;'; - $statements[] = 'DROP TABLE ' . $table_name . '_temp'; - - $statements[] = 'commit'; - break; - } - - return $this->_sql_run_sql($statements); - } - - /** - * Add unique index - */ - function sql_create_unique_index($table_name, $index_name, $column) - { - $statements = array(); - - $table_prefix = substr(CONFIG_TABLE, 0, -6); // strlen(config) - if (strlen($table_name . $index_name) - strlen($table_prefix) > 24) - { - $max_length = strlen($table_prefix) + 24; - trigger_error("Index name '{$table_name}_$index_name' on table '$table_name' is too long. The maximum is $max_length characters.", E_USER_ERROR); - } - - switch ($this->sql_layer) - { - case 'firebird': - case 'postgres': - case 'oracle': - case 'sqlite': - $statements[] = 'CREATE UNIQUE INDEX ' . $table_name . '_' . $index_name . ' ON ' . $table_name . '(' . implode(', ', $column) . ')'; - break; - - case 'mysql_40': - case 'mysql_41': - $statements[] = 'ALTER TABLE ' . $table_name . ' ADD UNIQUE INDEX ' . $index_name . '(' . implode(', ', $column) . ')'; - break; - - case 'mssql': - case 'mssqlnative': - $statements[] = 'CREATE UNIQUE INDEX ' . $index_name . ' ON ' . $table_name . '(' . implode(', ', $column) . ') ON [PRIMARY]'; - break; - } - - return $this->_sql_run_sql($statements); - } - - /** - * Add index - */ - function sql_create_index($table_name, $index_name, $column) - { - $statements = array(); - - $table_prefix = substr(CONFIG_TABLE, 0, -6); // strlen(config) - if (strlen($table_name . $index_name) - strlen($table_prefix) > 24) - { - $max_length = strlen($table_prefix) + 24; - trigger_error("Index name '{$table_name}_$index_name' on table '$table_name' is too long. The maximum is $max_length characters.", E_USER_ERROR); - } - - // remove index length unless MySQL4 - if ('mysql_40' != $this->sql_layer) - { - $column = preg_replace('#:.*$#', '', $column); - } - - switch ($this->sql_layer) - { - case 'firebird': - case 'postgres': - case 'oracle': - case 'sqlite': - $statements[] = 'CREATE INDEX ' . $table_name . '_' . $index_name . ' ON ' . $table_name . '(' . implode(', ', $column) . ')'; - break; - - case 'mysql_40': - // add index size to definition as required by MySQL4 - foreach ($column as $i => $col) - { - if (false !== strpos($col, ':')) - { - list($col, $index_size) = explode(':', $col); - $column[$i] = "$col($index_size)"; - } - } - // no break - case 'mysql_41': - $statements[] = 'ALTER TABLE ' . $table_name . ' ADD INDEX ' . $index_name . '(' . implode(', ', $column) . ')'; - break; - - case 'mssql': - case 'mssqlnative': - $statements[] = 'CREATE INDEX ' . $index_name . ' ON ' . $table_name . '(' . implode(', ', $column) . ') ON [PRIMARY]'; - break; - } - - return $this->_sql_run_sql($statements); - } - - /** - * List all of the indices that belong to a table, - * does not count: - * * UNIQUE indices - * * PRIMARY keys - */ - function sql_list_index($table_name) - { - $index_array = array(); - - if ($this->sql_layer == 'mssql' || $this->sql_layer == 'mssqlnative') - { - $sql = "EXEC sp_statistics '$table_name'"; - $result = $this->db->sql_query($sql); - while ($row = $this->db->sql_fetchrow($result)) - { - if ($row['TYPE'] == 3) - { - $index_array[] = $row['INDEX_NAME']; - } - } - $this->db->sql_freeresult($result); - } - else - { - switch ($this->sql_layer) - { - case 'firebird': - $sql = "SELECT LOWER(RDB\$INDEX_NAME) as index_name - FROM RDB\$INDICES - WHERE RDB\$RELATION_NAME = '" . strtoupper($table_name) . "' - AND RDB\$UNIQUE_FLAG IS NULL - AND RDB\$FOREIGN_KEY IS NULL"; - $col = 'index_name'; - break; - - case 'postgres': - $sql = "SELECT ic.relname as index_name - FROM pg_class bc, pg_class ic, pg_index i - WHERE (bc.oid = i.indrelid) - AND (ic.oid = i.indexrelid) - AND (bc.relname = '" . $table_name . "') - AND (i.indisunique != 't') - AND (i.indisprimary != 't')"; - $col = 'index_name'; - break; - - case 'mysql_40': - case 'mysql_41': - $sql = 'SHOW KEYS - FROM ' . $table_name; - $col = 'Key_name'; - break; - - case 'oracle': - $sql = "SELECT index_name - FROM user_indexes - WHERE table_name = '" . strtoupper($table_name) . "' - AND generated = 'N' - AND uniqueness = 'NONUNIQUE'"; - $col = 'index_name'; - break; - - case 'sqlite': - $sql = "PRAGMA index_info('" . $table_name . "');"; - $col = 'name'; - break; - } - - $result = $this->db->sql_query($sql); - while ($row = $this->db->sql_fetchrow($result)) - { - if (($this->sql_layer == 'mysql_40' || $this->sql_layer == 'mysql_41') && !$row['Non_unique']) - { - continue; - } - - switch ($this->sql_layer) - { - case 'firebird': - case 'oracle': - case 'postgres': - case 'sqlite': - $row[$col] = substr($row[$col], strlen($table_name) + 1); - break; - } - - $index_array[] = $row[$col]; - } - $this->db->sql_freeresult($result); - } - - return array_map('strtolower', $index_array); - } - - /** - * Change column type (not name!) - */ - function sql_column_change($table_name, $column_name, $column_data, $inline = false) - { - $column_data = $this->sql_prepare_column_data($table_name, $column_name, $column_data); - $statements = array(); - - switch ($this->sql_layer) - { - case 'firebird': - // Change type... - if (!empty($column_data['column_type_sql_default'])) - { - $statements[] = 'ALTER TABLE ' . $table_name . ' ALTER COLUMN "' . strtoupper($column_name) . '" TYPE ' . ' ' . $column_data['column_type_sql_type']; - $statements[] = 'ALTER TABLE ' . $table_name . ' ALTER COLUMN "' . strtoupper($column_name) . '" SET DEFAULT ' . ' ' . $column_data['column_type_sql_default']; - } - else - { - // TODO: try to change pkey without removing trigger, generator or constraints. ATM this query may fail. - $statements[] = 'ALTER TABLE ' . $table_name . ' ALTER COLUMN "' . strtoupper($column_name) . '" TYPE ' . ' ' . $column_data['column_type_sql_type']; - } - break; - - case 'mssql': - case 'mssqlnative': - $statements[] = 'ALTER TABLE [' . $table_name . '] ALTER COLUMN [' . $column_name . '] ' . $column_data['column_type_sql']; - - if (!empty($column_data['default'])) - { - // Using TRANSACT-SQL for this statement because we do not want to have colliding data if statements are executed at a later stage - $statements[] = "DECLARE @drop_default_name VARCHAR(100), @cmd VARCHAR(1000) - SET @drop_default_name = - (SELECT so.name FROM sysobjects so - JOIN sysconstraints sc ON so.id = sc.constid - WHERE object_name(so.parent_obj) = '{$table_name}' - AND so.xtype = 'D' - AND sc.colid = (SELECT colid FROM syscolumns - WHERE id = object_id('{$table_name}') - AND name = '{$column_name}')) - IF @drop_default_name <> '' - BEGIN - SET @cmd = 'ALTER TABLE [{$table_name}] DROP CONSTRAINT [' + @drop_default_name + ']' - EXEC(@cmd) - END - SET @cmd = 'ALTER TABLE [{$table_name}] ADD CONSTRAINT [DF_{$table_name}_{$column_name}_1] {$column_data['default']} FOR [{$column_name}]' - EXEC(@cmd)"; - } - break; - - case 'mysql_40': - case 'mysql_41': - $statements[] = 'ALTER TABLE `' . $table_name . '` CHANGE `' . $column_name . '` `' . $column_name . '` ' . $column_data['column_type_sql']; - break; - - case 'oracle': - $statements[] = 'ALTER TABLE ' . $table_name . ' MODIFY ' . $column_name . ' ' . $column_data['column_type_sql']; - break; - - case 'postgres': - $sql = 'ALTER TABLE ' . $table_name . ' '; - - $sql_array = array(); - $sql_array[] = 'ALTER COLUMN ' . $column_name . ' TYPE ' . $column_data['column_type']; - - if (isset($column_data['null'])) - { - if ($column_data['null'] == 'NOT NULL') - { - $sql_array[] = 'ALTER COLUMN ' . $column_name . ' SET NOT NULL'; - } - else if ($column_data['null'] == 'NULL') - { - $sql_array[] = 'ALTER COLUMN ' . $column_name . ' DROP NOT NULL'; - } - } - - if (isset($column_data['default'])) - { - $sql_array[] = 'ALTER COLUMN ' . $column_name . ' SET DEFAULT ' . $column_data['default']; - } - - // we don't want to double up on constraints if we change different number data types - if (isset($column_data['constraint'])) - { - $constraint_sql = "SELECT consrc as constraint_data - FROM pg_constraint, pg_class bc - WHERE conrelid = bc.oid - AND bc.relname = '{$table_name}' - AND NOT EXISTS ( - SELECT * - FROM pg_constraint as c, pg_inherits as i - WHERE i.inhrelid = pg_constraint.conrelid - AND c.conname = pg_constraint.conname - AND c.consrc = pg_constraint.consrc - AND c.conrelid = i.inhparent - )"; - - $constraint_exists = false; - - $result = $this->db->sql_query($constraint_sql); - while ($row = $this->db->sql_fetchrow($result)) - { - if (trim($row['constraint_data']) == trim($column_data['constraint'])) - { - $constraint_exists = true; - break; - } - } - $this->db->sql_freeresult($result); - - if (!$constraint_exists) - { - $sql_array[] = 'ADD ' . $column_data['constraint']; - } - } - - $sql .= implode(', ', $sql_array); - - $statements[] = $sql; - break; - - case 'sqlite': - - if ($inline && $this->return_statements) - { - return $column_name . ' ' . $column_data['column_type_sql']; - } - - $sql = "SELECT sql - FROM sqlite_master - WHERE type = 'table' - AND name = '{$table_name}' - ORDER BY type DESC, name;"; - $result = $this->db->sql_query($sql); - - if (!$result) - { - break; - } - - $row = $this->db->sql_fetchrow($result); - $this->db->sql_freeresult($result); - - $statements[] = 'begin'; - - // Create a temp table and populate it, destroy the existing one - $statements[] = preg_replace('#CREATE\s+TABLE\s+"?' . $table_name . '"?#i', 'CREATE TEMPORARY TABLE ' . $table_name . '_temp', $row['sql']); - $statements[] = 'INSERT INTO ' . $table_name . '_temp SELECT * FROM ' . $table_name; - $statements[] = 'DROP TABLE ' . $table_name; - - preg_match('#\((.*)\)#s', $row['sql'], $matches); - - $new_table_cols = trim($matches[1]); - $old_table_cols = preg_split('/,(?![\s\w]+\))/m', $new_table_cols); - $column_list = array(); - - foreach ($old_table_cols as $key => $declaration) - { - $entities = preg_split('#\s+#', trim($declaration)); - $column_list[] = $entities[0]; - if ($entities[0] == $column_name) - { - $old_table_cols[$key] = $column_name . ' ' . $column_data['column_type_sql']; - } - } - - $columns = implode(',', $column_list); - - // create a new table and fill it up. destroy the temp one - $statements[] = 'CREATE TABLE ' . $table_name . ' (' . implode(',', $old_table_cols) . ');'; - $statements[] = 'INSERT INTO ' . $table_name . ' (' . $columns . ') SELECT ' . $columns . ' FROM ' . $table_name . '_temp;'; - $statements[] = 'DROP TABLE ' . $table_name . '_temp'; - - $statements[] = 'commit'; - - break; - } - - return $this->_sql_run_sql($statements); - } -} - -?>
\ No newline at end of file |