Source for file DBMySQL.php
Documentation is available at DBMySQL.php
* $Id: DBMySQL.php 784 2007-11-08 10:15:50Z heltem $
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
* This software consists of voluntary contributions made by many individuals
* and is licensed under the LGPL. For more information please see
* <http://propel.phpdb.org>.
* This is used in order to connect to a MySQL database.
* @author Hans Lellelid <hans@xmpl.org> (Propel)
* @author Jon S. Stevens <jon@clearink.com> (Torque)
* @author Brett McLaughlin <bmclaugh@algx.net> (Torque)
* @author Daniel Rall <dlr@finemaltcoding.com> (Torque)
* @version $Revision: 784 $
* @package propel.adapter
* This method is called after a connection was created to run necessary
* post-initialization queries or code.
* @param PDO A PDO connection instance.
* @param array An array of settings.
if (isset ($settings['charset']['value'])) {
$con->query('SET NAMES "' . $settings['charset']['value'] . '"');
* This method is used to ignore case.
* @param in The string to transform to upper case.
* @return The upper case string.
return "UPPER(" . $in . ")";
* This method is used to ignore case.
* @param in The string whose case to ignore.
* @return The string in a case that can be ignored.
return "UPPER(" . $in . ")";
* Returns SQL which concatenates the second string to the first.
* @param string String to concatenate.
* @param string String to append.
return "CONCAT($s1, $s2)";
* Returns SQL which extracts a substring.
* @param string String to extract from.
* @param int Offset to start from.
* @param int Number of characters to extract.
return "SUBSTRING($s, $pos, $len)";
* Returns SQL which calculates the length (in chars) of a string.
* @param string String to calculate length of.
return "CHAR_LENGTH($s)";
* Locks the specified table.
* @param Connection $con The Creole connection to use.
* @param string $table The name of the table to lock.
* @throws PDOException No Statement could be created or
$con->exec("LOCK TABLE " . $table . " WRITE");
* Unlocks the specified table.
* @param PDO $con The PDO connection to use.
* @param string $table The name of the table to unlock.
* @throws PDOException No Statement could be created or
$statement = $con->exec("UNLOCK TABLES");
* @see DBAdapter::quoteIdentifier()
return '`' . $text . '`';
* @see DBAdapter::useQuoteIdentifier()
* @see DBAdapter::applyLimit()
public function applyLimit(&$sql, $offset, $limit)
$sql .= " LIMIT " . ($offset > 0 ? $offset . ", " : "") . $limit;
} else if ( $offset > 0 ) {
$sql .= " LIMIT " . $offset . ", 18446744073709551615";
* @see DBAdapter::random()
public function random($seed = null)
return 'rand('. ((int) $seed). ')';
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