mybatis動態(tài)sql語句怎么寫ifelse？and c.id=#{id}and b.id=#{oid}and a.pay_time BETWEEN #{startDate} AND #{endDa

mybatis動態(tài)sql語句怎么寫ifelse？

and c.id=#{id}and b.id=#{oid}and a.pay_time BETWEEN #{startDate} AND #{endDate}service層參數(shù)nullmybatis執(zhí)行sql語句候拼接指定if標(biāo)簽sql語句

用Mybatis框架怎么調(diào)用MySQL的函數(shù)？

Mapper文件，如下:

<select id="getPY" parameterType="String"

resultType="String" >

select getPY("中國") from dual

</select>

FUNCTION `getPY`(in_string VARCHAR(65534)) -- mysql函數(shù)！