常用sql语句（sqlserver）

---会不断更新---

1、查看某数据库的创建时间等

select * from sys.databases

2、获取所有表名

Select Name FROM SysObjects Where XType='U' orDER BY Name 

XType='U':表示所有用户表; 

XType='S':表示所有系统表;

3、查询包含某段字符的表

DECLARE @Text nvarchar(4000);
SET @Text = '要查询的字符串';
-- Get the schema name, table name, and table type for:
-- Table names
SELECT
       TABLE_SCHEMA  AS 'Object Schema'
      ,TABLE_NAME    AS 'Object Name'
      ,TABLE_TYPE    AS 'Object Type'
      ,'Table Name'  AS 'TEXT Location'
FROM  INFORMATION_SCHEMA.TABLES
WHERE TABLE_NAME LIKE '%'+@Text+'%'
UNION
 --Column names
SELECT
      TABLE_SCHEMA   AS 'Object Schema'
      ,COLUMN_NAME   AS 'Object Name'
      ,'COLUMN'      AS 'Object Type'
      ,'Column Name' AS 'TEXT Location'
FROM  INFORMATION_SCHEMA.COLUMNS
WHERE COLUMN_NAME LIKE '%'+@Text+'%'
UNION
-- Function or procedure bodies
SELECT
      SPECIFIC_SCHEMA     AS 'Object Schema'
      ,ROUTINE_NAME       AS 'Object Name'
      ,ROUTINE_TYPE       AS 'Object Type'
      ,ROUTINE_DEFINITION AS 'TEXT Location'
FROM  INFORMATION_SCHEMA.ROUTINES 
WHERE ROUTINE_DEFINITION LIKE '%'+@Text+'%'
      AND (ROUTINE_TYPE = 'function' OR ROUTINE_TYPE = 'procedure');