这两天项目用到ibatis,碰到and or的联合查询,语句像这样的
select * from table where xxx = "xxx" and (xxx="xxx" or xx1="xx1")
google,baidu了都找不到解决的方法,就是不知道括号往哪加
后面看到ibatis的动态迭代iterate里有个open="(",close=")"
我就在<dynamic prepend="and" 后面加上 open="(",close=")">一试,果然SQL拼凑正确
下面贴出动态查询代码备忘:
<sql id="condition"> <dynamic prepend="and"> <isNotEmpty prepend="and" property="starttime"> <![CDATA[ starttime >= #starttime# ]]> </isNotEmpty> <isNotEmpty prepend="and" property="endtime"> <![CDATA[ starttime <= #endtime# ]]> </isNotEmpty> <isNotEmpty prepend="and" property="rentcompany"> <![CDATA[ rentcompany like '%$rentcompany$%' ]]> </isNotEmpty> </dynamic> <dynamic prepend="and" open="(" close=")"> <isNotNull prepend="or" property="bilkcar"> <![CDATA[ bilkcar = 1 ]]> </isNotNull> <isNotNull prepend="or" property="guarantycar"> <![CDATA[ guarantycar = 1 ]]> </isNotNull> <isNotNull prepend="or" property="filchpart"> <![CDATA[ filchpart = 1 ]]> </isNotNull> <isNotNull prepend="or" property="causetrouble"> <![CDATA[ causetrouble = 1 ]]> </isNotNull> <isNotNull prepend="or" property="nohandle"> <![CDATA[ nohandle = 1 ]]> </isNotNull> <isNotNull prepend="or" property="inarrears"> <![CDATA[ inarrears = 1 ]]> </isNotNull> </dynamic> </sql>
然后使用:<include refid="searchValidDate"></include>
包含到sql里面去