在 MySQL 8 中，in 条件用于多个字段，查询结果为空的排查

1、在 MySQL 8 中，in 条件用于多个字段，查询结果为空。如图1

SELECT
	`id`,
	`name`,
	`email`,
	`type` 
FROM
	`customers` 
WHERE
	( 'name,email' ) IN ( '(\'客户姓名二\',\'44445@163.com\'),(\'客户姓名\',\'44445@163.com\')' ) 
ORDER BY
	`id` DESC

2、参考：在 MySQL 8 中，in 条件用于多个字段  查询结果不为空的 SQL 如下

SELECT * FROM `customers` WHERE ( NAME, email ) IN (( '123', '123@outlook.com' ),
( '我是客户姓名33', '1303842899@qq.com' ))

3、参考：在 Laravel 9 中使用原生表达查询时，报错：SQLSTATE[42000]: Syntax error or access violation: 1064 You have an error in your SQL syntax;  调整代码，打印绑定参数，符合预期，没有问题。如图2

$str = '';
foreach ($criteria['whereRawIn'][1] as $key => $customer) {
	$str .= ($key == 0) ? '(\'' : ',(\'';
	$str .= implode('\',\'', $customer) . '\')';
}

var_dump($criteria['whereRawIn'][0]);
var_dump($str);
exit;

string(10) "name,email"
string(2959) "('客户姓名二','44445@163.com'),('客户姓名','44445@163.com')"

4、调整代码实现如下

            $str = '';
            foreach ($criteria['whereRawIn'][1] as $key => $customer) {
                $str .= ($key == 0) ? '(\'' : ',(\'';
                $str .= implode('\',\'', $customer) . '\')';
            }

//            var_dump('(' . $criteria['whereRawIn'][0] . ')');
//            var_dump('(' . $str . ')');
//            exit;

            $builder->whereRaw('? in ?', ['(' . $criteria['whereRawIn'][0] . ')', '(' . $str . ')']);

5、运行时报错：SQLSTATE[42000]: Syntax error or access violation: 1064 You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ‘? order by `id` desc’ at line 1 。如图3

6、但是，将报错的 SQL 复制到数据库中，手动执行，执行成功。如图4

7、调整代码实现如下，运行时报错：SQLSTATE[21000]: Cardinality violation: 1241 Operand should contain 2 column(s) 。但是，将报错的 SQL 复制到数据库中，手动执行，执行成功。如图5

            $str = '';
            foreach ($criteria['whereRawIn'][1] as $key => $customer) {
                $str .= ($key == 0) ? '(\'' : ',(\'';
                $str .= implode('\',\'', $customer) . '\')';
            }

//            var_dump('(' . $criteria['whereRawIn'][0] . ')');
//            var_dump('(' . $str . ')');
//            exit;

            // $builder->whereRaw('? in ?', ['(' . $criteria['whereRawIn'][0] . ')', '(' . $str . ')']);
			$builder->whereRaw('(?,?) in (?)', ['name', 'email', $str]);
            // $builder->whereRaw('( ' . $criteria['whereRawIn'][0] . ' ) in (?)', [$str]);

8、最终决定放弃此 SQL，调整为另外一种 SQL 格式。代码实现如下，生成 SQL 如下，程序运行时不再报错，查询结果符合预期。如图6

foreach ($criteria['names_emails'] as $customer) {
	$builder->orWhere(function ($query) use ($customer) {
		$query->where('name', $customer[0])
			->where('email', $customer[1]);
	});
}

SELECT
	`id`,
	`name`,
	`email`,
	`type` 
FROM
	`customers` 
WHERE
	( `name` = '客户姓名二' AND `email` = '客户姓名二' ) 
	OR ( `name` = '客户姓名' AND `email` = '客户姓名' )
ORDER BY
	`id` DESC