mybatis动态sql语法错误

id="searchByPo">
        "where" prefixOverrides="and|or">
            <if test="id !='' and id !=null">
                id  = #{id}
            if>
            <if test="taskName !='' and taskName !=null">
                and task_name = #{taskName}
            if>
            <if test="taskIdentifier !='' and taskIdentifier !=null">
                and task_identifier = #{taskIdentifier}
            if>
            <if test="taskMethodName !='' and taskMethodName !=null">
                and task_method_name = #{taskMethodName}
            if>
            <if test="taskCircle !='' and taskCircle !=null">
                and task_circle = #{taskCircle}
            if>
            <if test="successCnt !='' and successCnt !=null">
                and success_cnt = #{successCnt}
            if>
            <if test="failCnt !='' and failCnt !=null">
                and fail_cnt = #{failCnt}
            if>
            <if test="createTime !='' and createTime !=null">
                and create_time = #{createTime}
            if>
            <if test="lastProcessTime !='' and lastProcessTime !=null">
                and last_process_time = #{lastProcessTime}
            if>
            <if test="status !='' and status !=null">
                and status = #{status}
            if>
        
    

这块代码本来用的大写AND报错了
不能用大写的，必须小写