导出数据字典SQL语句

SELECT sysobjects.name AS [table], sysproperties.[value] AS 表说明, syscolumns.name AS field, properties.[value] AS 字段说明, systypes.name AS type, syscolumns.length, ISNULL(COLUMNPROPERTY(syscolumns.id, syscolumns.name, 'Scale'), 0) AS 小数位数, syscolumns.isnullable AS isnull, CASE WHEN syscomments.text IS NULL THEN '' ELSE syscomments.text END AS [Default], CASE WHEN COLUMNPROPERTY(syscolumns.id, syscolumns.name, 'IsIdentity') = 1 THEN '√' ELSE '' END AS 标识, CASE WHEN EXISTS (SELECT 1 FROM sysobjects WHERE xtype = 'PK' AND name IN (SELECT name FROM sysindexes WHERE indid IN (SELECT indid FROM sysindexkeys WHERE id = syscolumns.id AND colid = syscolumns.colid))) THEN '√' ELSE '' END AS 主键 FROM syscolumns INNER JOIN sysobjects ON sysobjects.id = syscolumns.id INNER JOIN systypes ON syscolumns.xtype = systypes.xtype LEFT OUTER JOIN sysproperties properties ON syscolumns.id = properties.id AND syscolumns.colid = properties.smallid LEFT OUTER JOIN sysproperties ON sysobjects.id = sysproperties.id AND sysproperties.smallid = 0 LEFT OUTER JOIN syscomments ON syscolumns.cdefault = syscomments.id WHERE (sysobjects.xtype = 'U') order by sysobjects.name

精度是数字中的数字个数。小数位数是数中小数点右边的数字个数。例如，数123.45 的精度是5，小数位数是2

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