mysql 字段判断是否包含某个字符串_mysql 字段某包含某些值

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;
1

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);
1

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);
1

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);
1

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');
1

查询结果

非期望情况