case when (select count(exam_id) from yuejuan_data_screen.gp_exam where exam_id= ${exam_id} and source_type= ${source_type} )> 0 then 0 else 1 end is_run; </sql>
case when (select count(exam_id) from yuejuan_data_screen.gp_exam where exam_id= ${exam_id} and source_type= ${source_type} )> 0 then 0 else 1 end is_run; </sql>
case when (select count(exam_id) from yuejuan_data_screen.gp_exam where exam_id=${exam_id} and source_type=${source_type}) >0 then 0 else 1 end is_run; </sql>
case when (select count(exam_id) from yuejuan_data_screen.gp_exam where exam_id=${exam_id} and source_type=${source_type}) >0 then 0 else 1 end is_run; </sql>