--sql server 2000 SELECT     表名       = case when a.colorder=1 then d.name else '' end,     表说明     = case when a.colorder=1 then isnull(f.value,'') else '' end,     字段序号   = a.colorder,     字段名     = a.name,     标识       = case when COLUMNPROPERTY( a.id,a.name,'IsIdentity')=1 then '√'else '' end,     主键       = case when exists(SELECT 1 FROM sysobjects where xtype='PK' and parent_obj=a.id and name in (                      SELECT name FROM sysindexes WHERE indid in(                         SELECT indid FROM sysindexkeys WHERE id = a.id AND colid=a.colid))) then '√' else '' end,     类型       = b.name,     占用字节数 = a.length,     长度       = COLUMNPROPERTY(a.id,a.name,'PRECISION'),     小数位数   = isnull(COLUMNPROPERTY(a.id,a.name,'Scale'),0),     允许空     = case when a.isnullable=1 then '√'else '' end,     默认值     = isnull(e.text,''),     字段说明   = isnull(g.[value],'') FROM     syscolumns a left join     systypes b on     a.xusertype=b.xusertype inner join     sysobjects d on     a.id=d.id  and d.xtype='U' and  d.name<>'dtproperties' left join     syscomments e on     a.cdefault=e.id left join     sysproperties g on     a.id=g.id and a.colid=g.smallid  left join     sysproperties f on     d.id=f.id and f.smallid=0 where     d.name='要查询的表'    --如果只查询指定表,加上此条件 order by     a.id,a.colorder --sql server 2005 -- 1. 表结构信息查询 -- ======================================================================== -- 表结构信息查询 -- 邹建 2005.08(引用请保留此信息) -- ======================================================================== SELECT     TableName=CASE WHEN C.column_id=1 THEN O.name ELSE N'' END,     TableDesc=ISNULL(CASE WHEN C.column_id=1 THEN PTB.[value] END,N''),     Column_id=C.column_id,     ColumnName=C.name,     PrimaryKey=ISNULL(IDX.PrimaryKey,N''),     [IDENTITY]=CASE WHEN C.is_identity=1 THEN N'√'ELSE N'' END,     Computed=CASE WHEN C.is_computed=1 THEN N'√'ELSE N'' END,     Type=T.name,     Length=C.max_length,     Precision=C.precision,     Scale=C.scale,     NullAble=CASE WHEN C.is_nullable=1 THEN N'√'ELSE N'' END,     [Default]=ISNULL(D.definition,N''),     ColumnDesc=ISNULL(PFD.[value],N''),     IndexName=ISNULL(IDX.IndexName,N''),     IndexSort=ISNULL(IDX.Sort,N''),     Create_Date=O.Create_Date,     Modify_Date=O.Modify_date FROM sys.columns C     INNER JOIN sys.objects O         ON C.[object_id]=O.[object_id]             AND O.type='U'             AND O.is_ms_shipped=0     INNER JOIN sys.types T         ON C.user_type_id=T.user_type_id     LEFT JOIN sys.default_constraints D         ON C.[object_id]=D.parent_object_id             AND C.column_id=D.parent_column_id             AND C.default_object_id=D.[object_id]     LEFT JOIN sys.extended_properties PFD         ON PFD.class=1             AND C.[object_id]=PFD.major_id             AND C.column_id=PFD.minor_id --             AND PFD.name='Caption'  -- 字段说明对应的描述名称(一个字段可以添加多个不同name的描述)     LEFT JOIN sys.extended_properties PTB         ON PTB.class=1             AND PTB.minor_id=0             AND C.[object_id]=PTB.major_id --             AND PFD.name='Caption'  -- 表说明对应的描述名称(一个表可以添加多个不同name的描述)     LEFT JOIN                       -- 索引及主键信息     (         SELECT             IDXC.[object_id],             IDXC.column_id,             Sort=CASE INDEXKEY_PROPERTY(IDXC.[object_id],IDXC.index_id,IDXC.index_column_id,'IsDescending')                 WHEN 1 THEN 'DESC' WHEN 0 THEN 'ASC' ELSE '' END,             PrimaryKey=CASE WHEN IDX.is_primary_key=1 THEN N'√'ELSE N'' END,             IndexName=IDX.Name         FROM sys.indexes IDX         INNER JOIN sys.index_columns IDXC             ON IDX.[object_id]=IDXC.[object_id]                 AND IDX.index_id=IDXC.index_id         LEFT JOIN sys.key_constraints KC             ON IDX.[object_id]=KC.[parent_object_id]                 AND IDX.index_id=KC.unique_index_id         INNER JOIN  -- 对于一个列包含多个索引的情况,只显示第1个索引信息         (             SELECT [object_id], Column_id, index_id=MIN(index_id)             FROM sys.index_columns             GROUP BY [object_id], Column_id         ) IDXCUQ             ON IDXC.[object_id]=IDXCUQ.[object_id]                 AND IDXC.Column_id=IDXCUQ.Column_id                 AND IDXC.index_id=IDXCUQ.index_id     ) IDX         ON C.[object_id]=IDX.[object_id]             AND C.column_id=IDX.column_id -- WHERE O.name=N'要查询的表'       -- 如果只查询指定表,加上此条件 ORDER BY O.name,C.column_id -- 2. 索引及主键信息 -- ======================================================================== -- 索引及主键信息 -- 邹建 2005.08(引用请保留此信息) -- ======================================================================== SELECT     TableId=O.[object_id],     TableName=O.Name,     IndexId=ISNULL(KC.[object_id],IDX.index_id),     IndexName=IDX.Name,     IndexType=ISNULL(KC.type_desc,'Index'),     Index_Column_id=IDXC.index_column_id,     ColumnID=C.Column_id,     ColumnName=C.Name,     Sort=CASE INDEXKEY_PROPERTY(IDXC.[object_id],IDXC.index_id,IDXC.index_column_id,'IsDescending')         WHEN 1 THEN 'DESC' WHEN 0 THEN 'ASC' ELSE '' END,     PrimaryKey=CASE WHEN IDX.is_primary_key=1 THEN N'√'ELSE N'' END,     [UQIQUE]=CASE WHEN IDX.is_unique=1 THEN N'√'ELSE N'' END,     Ignore_dup_key=CASE WHEN IDX.ignore_dup_key=1 THEN N'√'ELSE N'' END,     Disabled=CASE WHEN IDX.is_disabled=1 THEN N'√'ELSE N'' END,     Fill_factor=IDX.fill_factor,     Padded=CASE WHEN IDX.is_padded=1 THEN N'√'ELSE N'' END FROM sys.indexes IDX     INNER JOIN sys.index_columns IDXC         ON IDX.[object_id]=IDXC.[object_id]             AND IDX.index_id=IDXC.index_id     LEFT JOIN sys.key_constraints KC         ON IDX.[object_id]=KC.[parent_object_id]             AND IDX.index_id=KC.unique_index_id     INNER JOIN sys.objects O         ON O.[object_id]=IDX.[object_id]     INNER JOIN sys.columns C         ON O.[object_id]=C.[object_id]             AND O.type='U'             AND O.is_ms_shipped=0             AND IDXC.Column_id=C.Column_id --    INNER JOIN  -- 对于一个列包含多个索引的情况,只显示第1个索引信息 --    ( --        SELECT [object_id], Column_id, index_id=MIN(index_id) --        FROM sys.index_columns --        GROUP BY [object_id], Column_id --    ) IDXCUQ --        ON IDXC.[object_id]=IDXCUQ.[object_id] --            AND IDXC.Column_id=IDXCUQ.Column_id