find_in_set
SELECT * FROM tablename where field1=2 and find_in_set(70,field2) ORDER BY `id` DESC
field2 里某条记录为 70,71,72,73会被找到,保存的值结构为逗号分隔
SELECT * FROM tablename where field1=2 and find_in_set(70,field2) ORDER BY `id` DESC
field2 里某条记录为 70,71,72,73会被找到,保存的值结构为逗号分隔