如何合并两个sql条件语句

Question

    table name: game
    id   player   keeper
    1    a            b
    2    c            d
    3    a            e
    4    c            b

condition_one：其中player = a和keeper = b condition_two：其中player = b和keeper = a

我想实现：condition_one或condition_two 有没有人有解决方案？

Answer 1

需要使用or声明：

select *
from game
where ((player = 'a' and keeper = 'b') or (player = 'b' and keeper = 'a'))

Answer 2

在MySQL中，您可以使用元组：

select g.*
from game g
where (player, keeper) in ( ('a', 'b'), ('b', 'a'));