API16:JDatabaseQuery/clear

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Description

Clear data from the query or a specific clause of the query.

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Syntax

clear($clause=null)

Parameter Name	Default Value	Description
$clause	null	Optionally, the name of the clause to clear, or nothing to clear the whole query.

Defined in

libraries/joomla/database/databasequery.php

Importing

jimport( 'joomla.database.databasequery' );

Source Body

public function clear($clause = null)
{
        switch ($clause) {
                case 'select':
                        $this->_select = null;
                        $this->_type = null;
                        break;
                case 'delete':
                        $this->_delete = null;
                        $this->_type = null;
                        break;
                case 'update':
                        $this->_update = null;
                        $this->_type = null;
                        break;
                case 'insert':
                        $this->_insert = null;
                        $this->_type = null;
                        break;
                case 'from':
                        $this->_from = null;
                        break;
                case 'join':
                        $this->_join = null;
                        break;
                case 'set':
                        $this->_set = null;
                        break;
                case 'where':
                        $this->_where = null;
                        break;
                case 'group':
                        $this->_group = null;
                        break;
                case 'having':
                        $this->_having = null;
                        break;
                case 'order':
                        $this->_order = null;
                        break;
                default:
                        $this->_type = null;
                        $this->_select = null;
                        $this->_delete = null;
                        $this->_udpate = null;
                        $this->_insert = null;
                        $this->_from = null;
                        $this->_join = null;
                        $this->_set = null;
                        $this->_where = null;
                        $this->_group = null;
                        $this->_having = null;
                        $this->_order = null;
                        break;
        }
 
        return $this;
}

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Examples

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