MS SqlServer 一些常用sql语句

1. 增加字段：HIS_BED表中增加Q8H 字段,varchar（2000）,默认空

alter table [C2_HIS].[dbo].[HIS_BED] add Q8H varchar(2000) default null

2. 增加备注

EXECUTE sp_addextendedproperty N'MS_Description', 'Q8H', N'user', N'dbo', N'table', N'HIS_BED', N'column', N'Q8H';

3. 修改备注

EXECUTE sp_addextendedproperty N'MS_Description', 'Q8H', N'user', N'dbo', N'table', N'HIS_BED', N'column', N'Q8H';

4. 多行合并为一行

SELECT
  ZYH
, WM_CONCAT(ZH) AS AH
, WM_CONCAT(XH) AS XH
, WM_CONCAT(DM) AS DM
, WM_CONCAT(MC) AS MC
, WM_CONCAT(YF) AS YF
FROM (SELECT * FROM VIEW_HIS_ORDER WHERE YF='qd')
GROUP BY ZYH

5. sqlcmd连接sqlserver
   sqlcmd -S ip -U username -P password
6. 查询所有数据库
   select name from master.dbo.sysdatabases
7. 创建数据库
   create database nwebservice
8. 查询所有表名
   select name from sysobjects where xtype='U'