mysql显示所有的列名
— 方式1SHOW FIELDS FROM purchase_suppliers;– 方式2DESC purchase_suppliers;– 方式3DESCRIBE purchase_suppliers;– 方式4select COLUMN_NAME from information_schema.columns where table_name=”purchase_suppliers”
不怂!!
— 方式1SHOW FIELDS FROM purchase_suppliers;– 方式2DESC purchase_suppliers;– 方式3DESCRIBE purchase_suppliers;– 方式4select COLUMN_NAME from information_schema.columns where table_name=”purchase_suppliers”
— mad_BillNo需要查找的字段名,– MES_MABom 表名select mad_BillNo,count(*) as count from MES_MABom group by mad_BillNo having count(*)>1;
DELETE FROM purchase_suppliers_contract_materials_sourceWHERE PSCMS_ID in( SELECT PSCMS_ID FROM( SELECT p1.PSCMS_ID FROM purchase_suppliers_contract_materials_source AS p1 LEFT JOIN materials A
数据库中查到所有的表SELECTtable_nameFROMinformation_schema. TABLESWHEREtable_schema = “db-mayn-erp-test”AND table_type = “base table”; 把这个表结果拷贝到excel中,使用筛选功能,筛选包含_bak表 将筛选的_bak表列放在另外一个列中,在B列输入:=”DROP TABLE IF
— 查询符合条件的表SELECT CONCAT(“truncate table “, table_name, “;”) FROMinformation_schema. TABLESWHEREtable_schema = “db-mayn-erp-test”AND TABLE_NAME LIKE “%purchase%”AND table_type = “base table”;– user 你
jQuery能够非常轻松地实现html标签替换$(“li”).replaceWith(function(){ return $(“
“).append($(this).contents()); });检测损坏图片并根据我们的选择加以替换。$(“img”).error(function(){ $(this).attr(“src”, “img/broken.png”); });
select count(name) from syscolumns where id = object_id(“表名”)
Windows键+r键 mysql –uroot –p 输入密码 use 数据库名 set names utf8; source C:UsersAdministratorDesktopm.sql
mysqldump -u 用户名 –p输入密码数据库名 >导入到的文件地址名实例:mysqldump -u root -p ms-bbs>C:UsersAdministratorDesktopms-bbs.sql