SELECT * FROM uc_matrix WHERE CODE_ = #{code} SELECT CASE WHEN count(1)>0 THEN 1 ELSE 0 END FROM uc_matrix WHERE CODE_ = #{code} AND ID_ != #{id} UPDATE uc_matrix SET IS_DELE_ = 1 WHERE ID_ IN #{item} SELECT distinct m.* FROM uc_matrix m left join uc_matrix_auth auth on m.id_=auth.matrix_id_ ${ew.customSqlSegment}