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  • 查询表字段信息

    string sql = string.Format(@"
                                SELECT
                                    syscolumns.colid,
                                    Sysobjects.name AS [TableName],
                                    syscolumns.name AS [ColumnName],
                                    systypes.name AS [DataType],
                                    syscolumns.length AS [DataLength],
                                    sys.extended_properties.[value] AS [Description],  
                                    syscomments.text AS [DefaultValue],
                                    syscolumns.isnullable AS [NullAble]    
                                FROM
                                    syscolumns INNER JOIN systypes
                                    ON syscolumns.xtype = systypes.xtype
                                    LEFT JOIN sysobjects ON syscolumns.id = sysobjects.id
                                    LEFT OUTER JOIN sys.extended_properties ON
                                    ( sys.extended_properties.minor_id = syscolumns.colid
                                    AND sys.extended_properties.major_id = syscolumns.id)
                                    LEFT OUTER JOIN syscomments ON syscolumns.cdefault = syscomments.id
                                WHERE syscolumns.id IN
                                (SELECT id FROM SYSOBJECTS WHERE xtype = 'U' AND NAME = '{0}') AND (systypes.name <> 'sysname')
                                ORDER BY syscolumns.colid
    ", tbName);
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  • 原文地址:https://www.cnblogs.com/zhangchenliang/p/1635598.html
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