mysql 字段判断是否包含某个字符串
整体数据
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;
查询support_goods_level中包含1或者2的数据
FIND_IN_SET(str,strlist)
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);
查询结果
LOCATE(substr,str)
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);
查询结果
非期望情况
故，如果数据中有类似数据会查询不正确。
POSITION(substr IN str)
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);
查询结果
非期望情况
故，如果数据中有类似数据会查询不正确。
INSTR(str,substr)
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');
查询结果
非期望情况
