From 643a86504a30f6b9fbe0f073bb03009b4fbd0f43 Mon Sep 17 00:00:00 2001
From: Andreas Fischer <bantu@phpbb.com>
Date: Thu, 31 May 2012 11:44:41 +0200
Subject: [ticket/10751] Add sql_lower_text() to database abstraction layer.
On MSSQL, LOWER() can only be called on bounded strings (i.e. varchar or char).
So, in order to use it on a text column, we have to convert it to an
appropriate type. We do so using the SUBSTRING function.
PHPBB3-10751
---
phpBB/includes/db/dbal.php | 12 ++++++++++++
phpBB/includes/db/mssql.php | 8 ++++++++
phpBB/includes/db/mssql_odbc.php | 8 ++++++++
phpBB/includes/db/mssqlnative.php | 8 ++++++++
4 files changed, 36 insertions(+)
(limited to 'phpBB')
diff --git a/phpBB/includes/db/dbal.php b/phpBB/includes/db/dbal.php
index 358df50402..9cc337955b 100644
--- a/phpBB/includes/db/dbal.php
+++ b/phpBB/includes/db/dbal.php
@@ -500,6 +500,18 @@ class dbal
return $column_name . ' | ' . (1 << $bit) . (($compare) ? ' ' . $compare : '');
}
+ /**
+ * Run LOWER() on DB column of type text (i.e. neither varchar nor char).
+ *
+ * @param string $column_name The column name to use
+ *
+ * @return string A SQL statement like "LOWER($column_name)"
+ */
+ function sql_lower_text($column_name)
+ {
+ return "LOWER($column_name)";
+ }
+
/**
* Run more than one insert statement.
*
diff --git a/phpBB/includes/db/mssql.php b/phpBB/includes/db/mssql.php
index 6899a73902..b7178593dc 100644
--- a/phpBB/includes/db/mssql.php
+++ b/phpBB/includes/db/mssql.php
@@ -332,6 +332,14 @@ class dbal_mssql extends dbal
return str_replace(array("'", "\0"), array("''", ''), $msg);
}
+ /**
+ * {@inheritDoc}
+ */
+ function sql_lower_text($column_name)
+ {
+ return "LOWER(SUBSTRING($column_name, 1, DATALENGTH($column_name)))";
+ }
+
/**
* Build LIKE expression
* @access private
diff --git a/phpBB/includes/db/mssql_odbc.php b/phpBB/includes/db/mssql_odbc.php
index 34f7a87337..2ecc42cadf 100644
--- a/phpBB/includes/db/mssql_odbc.php
+++ b/phpBB/includes/db/mssql_odbc.php
@@ -310,6 +310,14 @@ class dbal_mssql_odbc extends dbal
return str_replace(array("'", "\0"), array("''", ''), $msg);
}
+ /**
+ * {@inheritDoc}
+ */
+ function sql_lower_text($column_name)
+ {
+ return "LOWER(SUBSTRING($column_name, 1, DATALENGTH($column_name)))";
+ }
+
/**
* Build LIKE expression
* @access private
diff --git a/phpBB/includes/db/mssqlnative.php b/phpBB/includes/db/mssqlnative.php
index 92ac9b1fb9..c91cc188b0 100644
--- a/phpBB/includes/db/mssqlnative.php
+++ b/phpBB/includes/db/mssqlnative.php
@@ -492,6 +492,14 @@ class dbal_mssqlnative extends dbal
return str_replace(array("'", "\0"), array("''", ''), $msg);
}
+ /**
+ * {@inheritDoc}
+ */
+ function sql_lower_text($column_name)
+ {
+ return "LOWER(SUBSTRING($column_name, 1, DATALENGTH($column_name)))";
+ }
+
/**
* Build LIKE expression
* @access private
--
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