mysql 子查询类型 |winXP支持的mysql版本

1. 标量子查询
SELECT * FROM tableA WHERE id = (SELECT MAX(id) FROM tableA);
2. 列子查询
SELECT * FROM tableA WHERE id IN (SELECT id FROM tableB WHERE condition);
3. 行子查询
SELECT * FROM tableA WHERE (col1, col2) = (SELECT col1, col2 FROM tableB WHERE condition);
4. 子查询作为表
SELECT * FROM (SELECT col1, col2 FROM tableA WHERE condition) AS t;
5. EXISTS子查询
SELECT * FROM tableA WHERE EXISTS (SELECT * FROM tableB WHERE condition);
6. NOT EXISTS子查询
SELECT * FROM tableA WHERE NOT EXISTS (SELECT * FROM tableB WHERE condition);
7. 子查询作为函数参数
SELECT * FROM tableA WHERE col1 IN (SELECT MAX(col1) FROM tableB WHERE condition);
8. 子查询使用ANY操作符
SELECT * FROM tableA WHERE col1 >ANY (SELECT col1 FROM tableB WHERE condition);
9. 子查询使用ALL操作符
SELECT * FROM tableA WHERE col1 >ALL (SELECT col1 FROM tableB WHERE condition);

以上就是MySQL中常见的子查询类型，应用灵活可以方便大家查找出数据。需要注意的是，子查询也会对性能产生一定的影响，需要在实际使用中根据数据量和查询条件进行选择。