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Thread: if statement on sql query

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  1. #1
    Join Date
    May 2012

    if statement on sql query

    I was recomended to use the code as bellow to check if one of the condition not selected for example what if somebody will select just Mark=toyota and will leave empty Model and Year.

    PHP Code:
    $where = array();
    $whereclause '';

    if (!empty(
    $mark)) {
    $where[] = "a.mark = '$mark'";
    if (!empty(
    $model)) {
    $where[] = "a.model = '$model'";
    if (!empty(
    $year)) {
    $where[] = "a.year = $year";
    if (
    count($where 0)) {
    $whereclause join(' AND '$where);

    PHP Code:
    $result mysql_query("SELECT * FROM `add_new_car` AS a INNER JOIN `image_add_car` AS b ON
                                     a.id_add_car = b.user_id WHERE (b.user_id, b.id_image_add_car) IN (SELECT user_id, MIN(id_image_add_car)
    FROM image_add_car GROUP BY user_id) AND "
    .$whereclause." ORDER BY a.id_add_car"); 

    Mark=toyota Model=Prado Year=2013

    But why when I chose just Mark it doesn't gives me any result but at least together with Model=Prado it works without selecting Year

    Thank you

  2. #2
    Join Date
    May 2012
    Thank you Ive just misplased model and mark

  3. #3
    Join Date
    May 2013
    Surendranagar Gujarat India
    SELECT f.*, IF(f.buyable, s.cost, '') as cost
    FROM file as f
    IF f.buyable THEN
    LEFT JOIN subscription as s ON s.subscriptionid = f.subscriptionid
    END IF

    Kishor Makwana
    Software Engineer
    Insight Softech

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