如何在MySQL中使用数组变量？
MySQL不支持数组变量。要获得相同的结果，请使用表DUAL。以下是语法：
SELECT yourValue1 AS ArrayValue FROM DUAL UNION ALL SELECT yourValue2 FROM DUAL UNION ALL SELECT yourValue3 FROM DUAL UNION ALL SELECT yourValue4 FROM DUAL UNION ALL . . . . . . SELECT yourValueN FROM DUAL;
让我们创建一个示例表：
mysql> SELECT 1 AS ArrayValue FROM DUAL
UNION ALL
SELECT 2 FROM DUAL
UNION ALL
SELECT 3 FROM DUAL
UNION ALL
SELECT 4 FROM DUAL
UNION ALL
SELECT 5 FROM DUAL
UNION ALL
SELECT 6 FROM DUAL
UNION ALL
SELECT 7 FROM DUAL
UNION ALL
SELECT 8 FROM DUAL
UNION ALL
SELECT 9 FROM DUAL
UNION ALL
SELECT 10 FROM DUAL ;这将产生以下输出
+------------+ | ArrayValue | +------------+ | 1 | | 2 | | 3 | | 4 | | 5 | | 6 | | 7 | | 8 | | 9 | | 10 | +------------+ 10 rows in set (0.00 sec)