SQL语句获取全部数据库名、表名、字段名、表字段长度数据库
获取数据库中全部的表orm
SELECT SysObjects.name AS Tablename FROM sysobjects WHERE xtype = 'U'
ci
获取数据库中全部表的列名get
SELECT SysColumns.name AS Columnsname, SysObjects.name AS Tablename FROM SysObjects, SysColumns WHERE Sysobjects.Xtype='u' AND Sysobjects.Id=Syscolumns.Idio
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获取SQL全部数据库名、全部表名、全部字段名、表字段长度form
1.获取MSSQL中的全部数据库名:object
SELECT name FROM MASter..SysDatabASes ORDER BY namedate
2.获取MSSQL中的全部用户表名:数据类型
SELECT name FROM DatabASename..SysObjects WHERE XType='U' ORDER BY name
XType='U':表示全部用户表;
XType='S':表示全部系统表;
3.获取指定表[tb_phone]的全部字段名:
SELECT name FROM SysColumns WHERE id=Object_Id('tb_phone')
4.SQL全部表的表名、全部字段名、表字段长度
SELECT table_name AS 数据表名,
column_name AS 字段名,
ISNULL(column_default,'') AS 默认值,
is_nullable AS 是否容许为NULL,
data_type AS 数据类型,
ISNULL(ISNULL(ISNULL(character_maximum_length,numeric_precision),datetime_precision),1) AS 类型长度
FROM information_schema.columns
WHERE NOT table_name IN('sysdiagrams','dtproperties')
5.获取指定表[tb_phone]的表名,表字段名,字段类型和类型长度
SELECT SysObjects.name AS Tablename,
Syscolumns.name AS Columnsname,
Systypes.name AS DateType,
Syscolumns.length AS DateLength
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FROM Sysproperties RIGHT OUTER JOIN
Sysobjects INNER JOIN
Syscolumns ON Sysobjects.id = Syscolumns.id INNER JOIN
Systypes ON Syscolumns.xtype = Systypes.xtype ON
Sysproperties.id = Syscolumns.id AND
Sysproperties.smallid = Syscolumns.colid
WHERE (Sysobjects.xtype = 'u' OR
Sysobjects.xtype = 'v') AND (Systypes.name <> 'Sysname') AND
(Sysobjects.name = 'tb_phone')
ORDER BY Columnsname