IN

SinceVersion 1.2.0

IN

description

Syntax

expr IN (value, ...)

expr IN (subquery)

如果 expr 等于 IN 列表中的任何值则返回true,否则返回false。

subquery 只能返回一列,并且子查询返回的列类型必须 expr 类型兼容。

如果 subquery 返回bitmap数据类型列,expr必须是整型。

notice

  • 当前仅向量化引擎中支持 in 子查询返回bitmap列。

example

1. mysql> select id from cost where id in (1, 2);
2. +------+
3. | id   |
4. +------+
5. |    2 |
6. |    1 |
7. +------+
1. mysql> select id from tbl1 where id in (select id from tbl2);
2. +------+
3. | id   |
4. +------+
5. |    1 |
6. |    4 |
7. |    5 |
8. +------+
1. mysql> select id from tbl1 where id in (select bitmap_col from tbl3);
2. +------+
3. | id   |
4. +------+
5. |    1 |
6. |    3 |
7. +------+

keywords

1. IN