SELECT id,learn_plan_id,sequence,is_valid,support_goods_level FROM qs_study_subject_plan_configuration WHERE is_valid=1 AND learn_plan_id=3;
SELECT id,learn_plan_id,sequence,is_valid,support_goods_level FROM qs_study_subject_plan_configuration WHERE is_valid=1 AND learn_plan_id=3 AND FIND_IN_SET('1', support_goods_level);
SELECT id,learn_plan_id,sequence,is_valid,support_goods_level FROM qs_study_subject_plan_configuration WHERE is_valid=1 AND learn_plan_id=3 AND LOCATE('1',support_goods_level);
故,如果数据中有类似数据会查询不正确。
SELECT id,learn_plan_id,sequence,is_valid,support_goods_level FROM qs_study_subject_plan_configuration WHERE is_valid=1 AND learn_plan_id=3 AND POSITION('1' IN support_goods_level);
故,如果数据中有类似数据会查询不正确。
SELECT id,learn_plan_id,sequence,is_valid,support_goods_level FROM qs_study_subject_plan_configuration WHERE is_valid=1 AND learn_plan_id=3 AND INSTR(support_goods_level,'1');