- * Is the used MS SQL Server a SQL Server 2000?

- * @var bool

- */

- protected $is_sql_server_2000;

-

- /**

- '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)',

- ),

-

- * 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('mssql', 'mssqlnative', 'mysql_40', 'mysql_41', 'oracle', 'postgres', 'sqlite', 'sqlite3');

-

- /**

- case 'mssql':

- case 'mssql_odbc':

- $this->sql_layer = 'mssql';

- break;

-

- case 'mssqlnative':

- $this->sql_layer = 'mssqlnative';

- break;

-

- case 'mssql':

- case 'mssql_odbc':

- case 'mssqlnative':

- $sql = "SELECT name

- FROM sysobjects

- WHERE type='U'";

- break;

-

- 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;

- }

-

- if ($this->sql_layer == 'mssql' || $this->sql_layer == 'mssqlnative')

- {

- if (!isset($table_data['PRIMARY_KEY']))

- {

- $table_data['COLUMNS']['mssqlindex'] = array('UINT', null, 'auto_increment');

- $table_data['PRIMARY_KEY'] = 'mssqlindex';

- }

- }

- 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;

- }

- // Close the table for two DBMS and add to the statements

- switch ($this->sql_layer)

- {

- case 'mssql':

- case 'mssqlnative':

- $table_sql .= "\n);";

- $statements[] = $table_sql;

- break;

- }

-

- 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;

-

- // 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_name}'";

- break;

-

- 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;

- }

-

- 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;

- }

-

- 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]';

-

- if (!is_null($column_data[1]) || (isset($column_data[2]) && $column_data[2] == 'auto_increment'))

- {

- $sql .= 'NOT NULL';

- $sql_default .= 'NOT NULL';

- }

- else

- {

- $sql .= 'NULL';

- $sql_default .= 'NULL';

- }

-

- $return_array['column_type_sql_default'] = $sql_default;

-

- 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 'mssql':

- case 'mssqlnative':

- // We need the data here

- $old_return_statements = $this->return_statements;

- $this->return_statements = true;

-

- $indexes = $this->get_existing_indexes($table_name, $column_name);

- $indexes = array_merge($indexes, $this->get_existing_indexes($table_name, $column_name, true));

-

- // Drop any indexes

- $recreate_indexes = array();

- if (!empty($indexes))

- {

- foreach ($indexes as $index_name => $index_data)

- {

- $result = $this->sql_index_drop($table_name, $index_name);

- $statements = array_merge($statements, $result);

- if (sizeof($index_data) > 1)

- {

- // Remove this column from the index and recreate it

- $recreate_indexes[$index_name] = array_diff($index_data, array($column_name));

- }

- }

- }

-

- // Drop default value constraint

- $result = $this->mssql_get_drop_default_constraints_queries($table_name, $column_name);

- $statements = array_merge($statements, $result);

-

- // Remove the column

- $statements[] = 'ALTER TABLE [' . $table_name . '] DROP COLUMN [' . $column_name . ']';

-

- if (!empty($recreate_indexes))

- {

- // Recreate indexes after we removed the column

- foreach ($recreate_indexes as $index_name => $index_data)

- {

- $result = $this->sql_create_index($table_name, $index_name, $index_data);

- $statements = array_merge($statements, $result);

- }

- }

-

- $this->return_statements = $old_return_statements;

- break;

-

- case 'mssql':

- case 'mssqlnative':

- $statements[] = 'DROP INDEX ' . $table_name . '.' . $index_name;

- 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 .= ')';

-

- $statements[] = $sql;

- break;

-

- $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);

- }

-

- case 'mssql':

- case 'mssqlnative':

- $statements[] = 'CREATE UNIQUE INDEX [' . $index_name . '] ON [' . $table_name . ']([' . implode('], [', $column) . '])';

- break;

- $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);

- }

-

- case 'mssql':

- case 'mssqlnative':

- $statements[] = 'CREATE INDEX [' . $index_name . '] ON [' . $table_name . ']([' . implode('], [', $column) . '])';

- break;

- 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 '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';

- case 'mysql_40':

- case 'mysql_41':

- $sql = 'SHOW KEYS

- FROM ' . $table_name;

- $col = 'Key_name';

- case 'oracle':

- $sql = "SELECT index_name

- FROM user_indexes

- WHERE table_name = '" . strtoupper($table_name) . "'

- AND generated = 'N'

- AND uniqueness = 'NONUNIQUE'";

- $col = 'index_name';

- case 'sqlite':

- case 'sqlite3':

- $sql = "PRAGMA index_info('" . $table_name . "');";

- $col = 'name';

- }

- $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 'oracle':

- case 'postgres':

- case 'sqlite':

- case 'sqlite3':

- $row[$col] = substr($row[$col], strlen($table_name) + 1);

- }

-

- $index_array[] = $row[$col];

- $this->db->sql_freeresult($result);

- case 'mssql':

- case 'mssqlnative':

- // We need the data here

- $old_return_statements = $this->return_statements;

- $this->return_statements = true;

-

- $indexes = $this->get_existing_indexes($table_name, $column_name);

- $unique_indexes = $this->get_existing_indexes($table_name, $column_name, true);

-

- // Drop any indexes

- if (!empty($indexes) || !empty($unique_indexes))

- {

- $drop_indexes = array_merge(array_keys($indexes), array_keys($unique_indexes));

- foreach ($drop_indexes as $index_name)

- {

- $result = $this->sql_index_drop($table_name, $index_name);

- $statements = array_merge($statements, $result);

- }

- }

-

- // Drop default value constraint

- $result = $this->mssql_get_drop_default_constraints_queries($table_name, $column_name);

- $statements = array_merge($statements, $result);

-

- // Change the column

- $statements[] = 'ALTER TABLE [' . $table_name . '] ALTER COLUMN [' . $column_name . '] ' . $column_data['column_type_sql'];

-

- if (!empty($column_data['default']))

- {

- // Add new default value constraint

- $statements[] = 'ALTER TABLE [' . $table_name . '] ADD CONSTRAINT [DF_' . $table_name . '_' . $column_name . '_1] ' . $this->db->sql_escape($column_data['default']) . ' FOR [' . $column_name . ']';

- }

-

- if (!empty($indexes))

- {

- // Recreate indexes after we changed the column

- foreach ($indexes as $index_name => $index_data)

- {

- $result = $this->sql_create_index($table_name, $index_name, $index_data);

- $statements = array_merge($statements, $result);

- }

- }

-

- if (!empty($unique_indexes))

- {

- // Recreate unique indexes after we changed the column

- foreach ($unique_indexes as $index_name => $index_data)

- {

- $result = $this->sql_create_unique_index($table_name, $index_name, $index_data);

- $statements = array_merge($statements, $result);

- }

- }

-

- $this->return_statements = $old_return_statements;

- break;

-

- * Get queries to drop the default constraints of a column

- *

- * We need to drop the default constraints of a column,

- * before being able to change their type or deleting them.

- *

- * @param string $table_name

- * @param string $column_name

- * @return array Array with SQL statements

- */

- protected function mssql_get_drop_default_constraints_queries($table_name, $column_name)

- {

- $statements = array();

- if ($this->mssql_is_sql_server_2000())

- {

- // http://msdn.microsoft.com/en-us/library/aa175912%28v=sql.80%29.aspx

- // Deprecated in SQL Server 2005

- $sql = "SELECT so.name AS def_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}')";

- }

- else

- {

- $sql = "SELECT dobj.name AS def_name

- FROM sys.columns col

- LEFT OUTER JOIN sys.objects dobj ON (dobj.object_id = col.default_object_id AND dobj.type = 'D')

- WHERE col.object_id = object_id('{$table_name}')

- AND col.name = '{$column_name}'

- AND dobj.name IS NOT NULL";

- }

-

- $result = $this->db->sql_query($sql);

- while ($row = $this->db->sql_fetchrow($result))

- {

- $statements[] = 'ALTER TABLE [' . $table_name . '] DROP CONSTRAINT [' . $row['def_name'] . ']';

- }

- $this->db->sql_freeresult($result);

-

- return $statements;

- }

-

- /**

- case 'mssql':

- case 'mssqlnative':

- if ($this->mssql_is_sql_server_2000())

- {

- // http://msdn.microsoft.com/en-us/library/aa175912%28v=sql.80%29.aspx

- // Deprecated in SQL Server 2005

- $sql = "SELECT DISTINCT ix.name AS phpbb_index_name

- FROM sysindexes ix

- INNER JOIN sysindexkeys ixc

- ON ixc.id = ix.id

- AND ixc.indid = ix.indid

- INNER JOIN syscolumns cols

- ON cols.colid = ixc.colid

- AND cols.id = ix.id

- WHERE ix.id = object_id('{$table_name}')

- AND cols.name = '{$column_name}'

- AND INDEXPROPERTY(ix.id, ix.name, 'IsUnique') = " . ($unique ? '1' : '0');

- }

- else

- {

- $sql = "SELECT DISTINCT ix.name AS phpbb_index_name

- FROM sys.indexes ix

- INNER JOIN sys.index_columns ixc

- ON ixc.object_id = ix.object_id

- AND ixc.index_id = ix.index_id

- INNER JOIN sys.columns cols

- ON cols.column_id = ixc.column_id

- AND cols.object_id = ix.object_id

- WHERE ix.object_id = object_id('{$table_name}')

- AND cols.name = '{$column_name}'

- AND ix.is_unique = " . ($unique ? '1' : '0');

- }

- break;

-

- case 'mssql':

- case 'mssqlnative':

- if ($this->mssql_is_sql_server_2000())

- {

- $sql = "SELECT DISTINCT ix.name AS phpbb_index_name, cols.name AS phpbb_column_name

- FROM sysindexes ix

- INNER JOIN sysindexkeys ixc

- ON ixc.id = ix.id

- AND ixc.indid = ix.indid

- INNER JOIN syscolumns cols

- ON cols.colid = ixc.colid

- AND cols.id = ix.id

- WHERE ix.id = object_id('{$table_name}')

- AND " . $this->db->sql_in_set('ix.name', array_keys($existing_indexes));

- }

- else

- {

- $sql = "SELECT DISTINCT ix.name AS phpbb_index_name, cols.name AS phpbb_column_name

- FROM sys.indexes ix

- INNER JOIN sys.index_columns ixc

- ON ixc.object_id = ix.object_id

- AND ixc.index_id = ix.index_id

- INNER JOIN sys.columns cols

- ON cols.column_id = ixc.column_id

- AND cols.object_id = ix.object_id

- WHERE ix.object_id = object_id('{$table_name}')

- AND " . $this->db->sql_in_set('ix.name', array_keys($existing_indexes));

- }

- break;

-

- * Is the used MS SQL Server a SQL Server 2000?

- *

- * @return bool

- */

- protected function mssql_is_sql_server_2000()

- {

- if ($this->is_sql_server_2000 === null)

- {

- $sql = "SELECT CAST(SERVERPROPERTY('productversion') AS VARCHAR(25)) AS mssql_version";

- $result = $this->db->sql_query($sql);

- $properties = $this->db->sql_fetchrow($result);

- $this->db->sql_freeresult($result);

- $this->is_sql_server_2000 = $properties['mssql_version'][0] == '8';

- }

-

- return $this->is_sql_server_2000;

- }

-

- /**