Operators - IN - 《Apache Doris v1.2 Documentation》

IN

SinceVersion 1.2.0

expr IN (value, ...)

expr IN (subquery)

If expr is equal to any value in the IN list, return true; otherwise, return false.

Subquery can only return one column, and the column types returned by subquery must be compatible with expr types.

If subquery returns a bitmap data type column, expr must be an integer.

Currently, bitmap columns are only returned to in subqueries supported in the vectorized engine.

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. +------+

1. IN