I fired the following query with the help of mysqli_multi_query
. Which is executing properly but not returning any value. It returning blank. Whats wrong with the mysqli_multi_query
or is there any alternative for this for firing multiple queries in codeigniter.
$sql="LOCK TABLE xp_subunit WRITE; ";
$sql .= "SELECT @myLeft := ".$_GET['lft'].", @myRight := ".$_GET['rgt'].", @myWidth := ".$_GET['lft']." - lft + 1
FROM xp_subunit
WHERE id =".$_GET['id']."; ";
$sql .= "DELETE FROM xp_subunit WHERE lft BETWEEN @myLeft AND @myRight; ";
$sql .= "UPDATE xp_subunit SET rgt = rgt - @myWidth WHERE rgt > @myRight; ";
$sql .= "UPDATE xp_subunit SET lft = lft - @myWidth WHERE lft > @myRight; ";
$sql.="UNLOCK TABLES;";
//echo $sql;
$query = $this->db->mysqli_multi_query($sql);
Just Try with the following Example.,
<?php
$mysqli = new mysqli("localhost", "my_user", "my_password", "world");
/* check connection */
if (mysqli_connect_errno()) {
printf("Connect failed: %s\n", mysqli_connect_error());
exit();
}
$query = "SELECT CURRENT_USER();";
$query .= "SELECT Name FROM City ORDER BY ID LIMIT 20, 5";
/* execute multi query */
$mysqli->multi_query($query);
?>
I think this may help you to get the solution.
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