MySQL coalesce、case when、multiIf…的学习和使用 2024-8-22 18:38 | 347 | MySQL,数据库 241 字 | 3 分钟 select coalesce(count(multiIf(t.is_in_stock='是',1,null)),0) as value_1, coalesce(count(multiIf(t.is_in_stock='是',null,1)),0) as value_0, coalesce(round(count(1),2),0) as total…