php - 带有 LIKE 和 BETWEEN 的 mysql 语句不起作用

Question

我有这个 mysql 语句，它同时使用 LIKE 和 BETWEEN 语句:

$stmt1 = $db->prepare("SELECT * FROM forsale WHERE `make` LIKE ? 
OR `model` LIKE ? AND `year` BETWEEN ? AND ? OR `price` BETWEEN ? 
AND ? LIMIT $start,$perpage");

$stmt1->execute(array($searchQuery1,$searchQuery2,$searchQuery3,
$searchQuery4,$searchQuery5,$searchQuery6));
$rows1 = $stmt1->fetchAll();

当我这样写声明时:

$firstWorking = $db->prepare("SELECT * FROM forsale WHERE `make` LIKE ? 
OR `model` LIKE ? LIMIT $start,$perpage");

它工作正常，当我隔离 BETWEEN 时也是如此:

$secondWorking = $db->prepare("SELECT * FROM forsale WHERE `year` BETWEEN ? AND ? 
OR `price` BETWEEN ? AND ? LIMIT $start,$perpage");

所有 LIKE 语句都执行得很好，但我遇到的问题是，当 LIKE 语句位于 BETWEEN 语句前面时，BETWEEN 语句不起作用。当我选择一个范围(例如 1999-2008)时，不会返回任何结果，但如果我选择一个具有指定型号或品牌的日期范围，它只显示型号和品牌的结果，忽略 Between 语句。如有任何帮助，我们将不胜感激!

Answer 1

我在编程方面比一年前聪明多了。当 $_GET 变量为空时，我必须构建一个自定义解决方案，它们将被替换为“%%”通配符或自定义整数，例如表示起始年份的“1982”。答案如下::

    if(isset($_GET['selectMake'])){
    $selectMake = '%'.$_GET['selectMake'].'%';
    } else {
    $selectMake = '%%';
    }

    if(isset($_GET['selectModel'])){
    $selectModel = '%'.$_GET['selectModel'].'%';
    } else {
    $selectModel = '%%';
    }

    if(isset($_GET['engineType'])){
    $engineType = '%'.$_GET['engineType'].'%';
    } else {
    $engineType = '%%';
    }

    if(isset($_GET['transmission'])){
    $transmission = '%'.$_GET['transmission'].'%';
    } else {
    $transmission = '%%';
    }

    if(!empty($_GET['startYear'])){
    $startYear = $_GET['startYear']; 
    } else {
    $startYear = '1982';
    }

    if(!empty($_GET['endYear'])){
    $endYear = $_GET['endYear']; 
    } else {
    $endYear = '2099';
    }

    if(!empty($_GET['minPrice'])){
    $minPrice = $_GET['minPrice']; 
    } else {
    $minPrice = '5000.00';
    }

    if(!empty($_GET['maxPrice'])){
    $maxPrice = $_GET['maxPrice']; 
    } else {
    $maxPrice = '1000000.00';
    }
    $stmt1 = $db->prepare("SELECT * FROM forsale WHERE (`make` LIKE ? OR `model` LIKE ?) AND (`transmission` LIKE ?) AND (`year` BETWEEN ? AND ?) AND (`price` BETWEEN ? AND ?) AND (`engineType` BETWEEN ? AND ?) LIMIT ?,?");
    $stmt1->execute(array($selectMake,$selectModel,$transmission,$startYear,$endYear,$minPrice,$maxPrice,$minEngine,$maxEngine,$start,$perpage));
    $rows1 = $stmt1->fetchAll();