rhymix/classes/db/queryparts/expression/SelectExpression.class.php
mosmartin 7dbe0626b6 Update new xml query classes with xe 1.5
with improved query argument support and update and delete queries

git-svn-id: http://xe-core.googlecode.com/svn/branches/1.5.0-DB@8378 201d5d3c-b55e-5fd7-737f-ddc643e51545
2011-05-19 13:06:56 +00:00

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PHP

<?php
/**
* @class SelectExpression
* @author Arnia Software
* @brief Represents an expresion that appears in the select clause
*
* @remarks
* $column_name can be:
* - a table column name
* - an sql function - like count(*)
* - an sql expression - substr(column_name, 1, 8) or score1 + score2
* $column_name is already escaped
*/
class SelectExpression extends Expression {
var $column_alias;
function SelectExpression($column_name, $alias = NULL){
parent::Expression($column_name);
$this->column_alias = $alias;
}
function getExpression() {
return sprintf("%s%s", $this->column_name, $this->column_alias ? " as ".$this->column_alias : "");
}
function show() {
return true;
}
}
?>