mysql - 在 BETWEEN 子句中使用 SQL 子查询获取日期

Question

MySQL 中的多选 SQL 有什么问题:

select *
from license
where license.expirydate between (
   (select monthrange.monthstart from monthrange where id = 1)
   and
   (select monthrange.monthend from monthrange where id = 1)
)

Answer 1

这是您的查询:

select *
from license
where license.expirydate between ((select monthrange.monthstart from monthrange where id = 1) and 
                                  (select monthrange.monthend from monthrange where id = 1)
                                 )

Between 的参数不应位于括号中。试试这个:

select *
from license
where license.expirydate between (select monthrange.monthstart from monthrange where id = 1) and 
                                 (select monthrange.monthend from monthrange where id = 1)

当然，您也可以将其表示为连接。这个答案只是为了评论语法错误:

select l.*
from license l join
     monthrange m
     on l.expirydate between m.monthstart and m.monthend and
        m.id = 1;