<if test="param1==1 or ((param1==2 or param1==3) and (param2==2 orparam2==3)) or param3==3">
left join
</if>
<if test="param4 != null and param4 != ''">
and param4 >= '${param4}'
</if>
<if test="param1==1 or ((param1==2 or param1==3) and (param2==2 orparam2==3)) or param3==3">
left join
</if>
<if test="param4 != null and param4 != ''">
and param4 >= '${param4}'
</if>
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