我用4条语句创建了一个存储过程
DELIMITER $$
CREATE PROCEDURE returnFunction()
BEGIN
SELECT
*
FROM
tb_1 as 1;
SELECT
*
FROM
tb_2 as 2;
SELECT
*
FROM
tb_3 as 3;
SELECT
*
FROM
tb_4 as 4;
END;
像这样称呼这个sp
$query = "CALL returnFunction()";
$p_sql = connection::conn()->prepare($query);
$p_sql->execute();
do {
$rows = $p_sql->fetchAll(PDO::FETCH_NUM);
if ($rows)
{
print_r($rows);
}
} while ($p_sql->nextRowset());
这将所有语句的结果一起返回。
我需要将结果带到第一条语句并将其放入变量$ v1中 第二条语句变量$ v2 第三个语句变量$ v3 第四个语句变量$ v4
我该怎么做?
答案 0 :(得分:1)
您可以使用variable variables快速生成变量名:
$query = "CALL returnFunction()";
$p_sql = connection::conn()->prepare($query);
$p_sql->execute();
$i = 1;
do {
$rows = $p_sql->fetchAll(PDO::FETCH_NUM);
if ($rows)
{
print_r($rows);
${"v$i"} = $rows;
}
$i++;
} while ($p_sql->nextRowset());
这会将每个非空结果集放在变量$v1
,$v2
等中。但是您应该考虑只使用数组:
$query = "CALL returnFunction()";
$p_sql = connection::conn()->prepare($query);
$p_sql->execute();
$v = array();
do {
$rows = $p_sql->fetchAll(PDO::FETCH_NUM);
if ($rows)
{
print_r($rows);
$v[] = $rows;
}
} while ($p_sql->nextRowset());
请注意,如果您也要存储空结果集,请将分配移到if
块之外。
答案 1 :(得分:0)
您可以使用如下所示的并集并输出v1,v2,v3,v4,然后将它们分配给变量
SELECT MAX(v1) as v1,MAX(v2) as v2,MAX(v3) as v3,MAX(v4) as v4
FROM
(
SELECT 1.x AS v1,NULL AS v2,NULL AS v3, NULL AS v4
FROM tb_1 AS 1
UNION ALL
SELECT NULL AS v2,2.x AS v2,NULL AS v3, NULL AS v4
FROM tb_2 AS 2
UNION ALL
SELECT NULL AS v2,NULL AS v2,3.x AS v3, NULL AS v4
FROM tb_3 AS 3
UNION ALL
SELECT NULL AS v2,NULL AS v2,NULL AS v3, 4.x AS v4
FROM tb_4 AS 4
) A