ibatis dynamic SQL using for 如何通过 IBATIS dynamic Sql 在两个日期之间实现

Question

我想在 Ibatis 中做一个像这样的复杂动态 select 语句

select * from emp 
//when dateParam between 2012-03-1 and 2013-03-01 then
union
select * from emp1
//when dateParam between 2014-03-1 and 2015-03-01 then
union
select * from emp2

Answer 1

我是这样做的：

select * from emp  
<isLessEqual  property="dateParam" compareValue="2015-03-01">
  union
  select * from emp1
</isLessEqual>
<isLessEqual  property="dateParam" compareValue="2013-03-01">
  union
  select * from emp1
</isLessEqual>

ibatis dynamic SQL using for 如何通过 IBATIS dynamic Sql 在两个日期之间实现

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