select zhangid ,jietitle ,content from book where concat(ifnull(book.jietitle,''),ifnull(book.content,''),ifnull(book.zhangid,'')) like '%网络%';
搜索功能时较实用
效果如图
select zhangid ,jietitle ,content from book where concat(ifnull(book.jietitle,''),ifnull(book.content,''),ifnull(book.zhangid,'')) like '%网络%';
搜索功能时较实用
效果如图