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  • 得到用户表结构的SQL语句


    查询系统表INFORMATION_SCHEMA.TABLES得到所有用户表结构:
    SELECT T.TABLE_SCHEMA as [TableOwner],T.TABLE_NAME as [TableName],
    C.COLUMN_NAME as [ColumnName],C.DATA_TYPE as [DataType],C.CHARACTER_MAXIMUM_LENGTH as [Size],
    C.NUMERIC_PRECISION as [Precision],C.COLUMN_DEFAULT as [DefaultValue],C.IS_NULLABLE as [AllowNull]
                       
    , COLUMNPROPERTY( OBJECT_ID(T.TABLE_NAME),C.COLUMN_NAME,'IsComputed') as  IsComputed
              
    FROM INFORMATION_SCHEMA.TABLES T
    JOIN INFORMATION_SCHEMA.COLUMNS C on T.TABLE_NAME = C.TABLE_NAME
    WHERE T.TABLE_NAME NOT LIKE 'sys%'
    AND T.TABLE_TYPE = 'BASE TABLE'
    AND T.TABLE_NAME <> 'dtproperties'
    AND T.TABLE_SCHEMA <> 'INFORMATION_SCHEMA'
    ORDER BY T.TABLE_NAME, C.ORDINAL_POSITION
    得到所有是Identity的COlUMN集合
    SELECT T.TABLE_NAME as Table_Name,
    IDENT_SEED(T.TABLE_NAME) as seed,
    IDENT_INCR(T.TABLE_NAME)as increment,
    C.Column_Name
    FROM INFORMATION_SCHEMA.TABLES T
    join information_schema.COLUMNS C on C.Table_Name = T.Table_Name
    WHERE IDENT_SEED(T.TABLE_NAME) IS NOT NULL AND
    ColumnProperty(OBJECT_ID(T.TABLE_NAME),C.COLUMN_NAME,'IsIdentity') = 1 AND
    T.TABLE_NAME NOT LIKE 'sys%'
    AND T.TABLE_TYPE = 'BASE TABLE'
    AND T.TABLE_NAME <> 'dtproperties'
    AND T.TABLE_SCHEMA <> 'INFORMATION_SCHEMA'

    得到某个表的所有约束和列的默认值的语句:
    select 
    t_obj.name     as TABLE_NAME
    ,c_obj.name    as CONSTRAINT_NAME
    ,com.text    as DEFAULT_CLAUSE
    from sysobjects c_obj
    join  syscomments com on  c_obj.id = com.id
    join  sysobjects t_obj on c_obj.parent_obj = t_obj.id 
    join    sysconstraints con on c_obj.id = con.constid
    join  syscolumns col on t_obj.id = col.id
    and con.colid = col.colid
    where
    c_obj.xtype = 'C' and t_obj.name ='YourTableName'

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  • 原文地址:https://www.cnblogs.com/Isabella/p/771870.html
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