<?php
/*
PHP script to generate a query for names in a parent table
for which there are matching values in an attributes table
*/
$a = array( 'red', 'orange', 'long' );
$n = count( $a );
$qry = "SELECT DISTINCT p.name FROM parents p JOIN attributes a ON p.id=a.id WHERE a.attributevalue IN(";
for( $i=0; $i<$n; $i++ ) {
$qry .= "'" . $a[$i] . "'" . (( $i < $n-1 ) ? "," : ")");
}
echo $qry;
/*
Generates:
SELECT DISTINCT p.name FROM parents p JOIN attributes a ON p.id=a.id
WHERE a.attributevalue IN('red','orange','long')
*/
?>
Last updated 22 May 2024 |
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