通過sql查詢語句,查詢某個字段中包含特定字符串:
例子:查詢e_book表的types字段包含字符串"3",有下面4種方式
select * from e_book where types like "%3%"; select * from e_book where find_in_set('3', types); select * from e_book where locate('3', types); select * from e_book where INSTR(types,'3');
第2、3中方式相對速度較快