SELECT --TableName=o.name,OWNER=USER_NAME(o.uid),TableDescription=ISNULL(ptb.value,N''),
	TableName=CASE WHEN c.colid=1 THEN o.name ELSE N'' END,
	OWNER=CASE WHEN c.colid=1 THEN USER_NAME(o.uid) ELSE N'' END,
	TableDescription=CASE WHEN c.colid=1 THEN ISNULL(ptb.value,N'') ELSE N'' END,
	FieldId=c.colid,FieldName=c.name,
	FieldType=QUOTENAME(t.name)
		+CASE 
			WHEN t.name IN (N'decimal',N'numeric')
			THEN N'('+CAST(c.prec as varchar)+N','+CAST(c.scale as varchar)+N')'
			WHEN t.name IN (N'float')
				OR t.name like N'%char'
				OR t.name like N'%binary'
			THEN N'('+CAST(c.prec as varchar)+N')'
			ELSE N'' END
		+CASE WHEN c.isnullable=1 THEN N'' ELSE N' NOT' END+N' NULL',
	FieldDescription=ISNULL(pfd.value,''),
	DefileLength=c.length,
	FieldDefault=ISNULL(df.text,N''),
	IsIDENTITY=CASE WHEN COLUMNPROPERTY(o.id,c.name,N'IsIdentity')=1 THEN N'√' ELSE N'' END,
	IsComputed=CASE WHEN COLUMNPROPERTY(o.id,c.name,N'IsComputed')=1 THEN N'√' ELSE N'' END,
	IsROWGUID=CASE WHEN COLUMNPROPERTY(o.id,c.name,N'IsRowGuidCol')=1 THEN N'√' ELSE N'' END,
	IsPrimaryKey=CASE WHEN opk.xtype IS NULL THEN N'' ELSE N'√' END
FROM sysobjects o
	JOIN syscolumns c
		ON c.id=o.id
			AND OBJECTPROPERTY(o.id,N'IsUserTable')=1
--			AND o.name=N'要查詢的表名'
--			AND c.name=N'要查詢的列名'
	JOIN systypes t
		ON t.xusertype=c.xusertype
	LEFT JOIN syscomments df
		ON df.id=c.cdefault
	LEFT JOIN sysproperties ptb
		ON ptb.id=o.id and ptb.smallid=0
	LEFT JOIN sysproperties pfd
		ON pfd.id=o.id and pfd.smallid=c.colid
	LEFT JOIN sysindexkeys idxk
		ON idxk.id=o.id
			AND idxk.colid=c.colid
	LEFT JOIN sysindexes idx
		ON idx.indid=idxk.indid
			AND idx.id=idxk.id
			AND idx.indid NOT IN(0,255)
	LEFT JOIN sysobjects opk
		ON opk.parent_obj=o.id
			AND opk.name=idx.name
			AND OBJECTPROPERTY(opk.id,N'IsPrimaryKey')=1
ORDER BY o.name,c.colid





SELECT 
	表名=case when a.colorder=1 then d.name else '' end,
	表說明=case when a.colorder=1 then isnull(f.value,'') else '' end,
	字段序號=a.colorder,
	字段名=a.name,
	標識=case when COLUMNPROPERTY( a.id,a.name,'IsIdentity')=1 then '√'else '' end,
	主鍵=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,
	類型=b.name,
	占用字節數=a.length,
	長度=COLUMNPROPERTY(a.id,a.name,'PRECISION'),
	小數位數=isnull(COLUMNPROPERTY(a.id,a.name,'Scale'),0),
	允許空=case when a.isnullable=1 then '√'else '' end,
	默認值=isnull(e.text,''),
	字段說明=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='要查詢的表'    --如果只查詢指定表,加上此條件
order by a.id,a.colorder


--顯示當前庫中的所有表/系統表/視圖
--如果只顯示其中幾項,則通過指定 @table_type 的參數列表來實現
--TABLE        代表用戶表
--SYSTEM TABLE 代表系統表
--VIEW         代表視圖
exec sp_tables @table_type='''TABLE'',''SYSTEM TABLE'',''VIEW'''

--顯示指定表的表結構信息,sysobjects 是要顯示的表名
exec sp_columns 'sysobjects'





SELECT TableName=o.name,OWNER=USER_NAME(o.uid),TableDescription=ISNULL(ptb.value,N''),
	FieldId=c.colid,FieldName=c.name,
	FieldType=QUOTENAME(t.name)
		+CASE 
			WHEN t.name IN (N'decimal',N'numeric')
			THEN N'('+CAST(c.prec as varchar)+N','+CAST(c.scale as varchar)+N')'
			WHEN t.name IN (N'float')
				OR t.name like N'%char'
				OR t.name like N'%binary'
			THEN N'('+CAST(c.prec as varchar)+N')'
			ELSE N'' END
		+CASE WHEN c.isnullable=1 THEN N'' ELSE N' NOT' END+N' NULL',
	FieldDescription=ISNULL(pfd.value,''),
	DefileLength=c.length,
	FieldDefault=ISNULL(df.text,N''),
	IsIDENTITY=COLUMNPROPERTY(o.id,c.name,N'IsIdentity'),
	IsComputed=COLUMNPROPERTY(o.id,c.name,N'IsComputed'),
	IsROWGUID=COLUMNPROPERTY(o.id,c.name,N'IsRowGuidCol'),
	IsPrimaryKey=CASE WHEN opk.xtype IS NULL THEN 0 ELSE 1 END
FROM sysobjects o
	JOIN syscolumns c
		ON c.id=o.id
			AND OBJECTPROPERTY(o.id,N'IsUserTable')=1
	JOIN systypes t
		ON t.xusertype=c.xusertype
	LEFT JOIN syscomments df
		ON df.id=c.cdefault
	LEFT JOIN sysproperties ptb
		ON ptb.id=o.id and ptb.smallid=0
	LEFT JOIN sysproperties pfd
		ON pfd.id=o.id and pfd.smallid=c.colid
	LEFT JOIN sysindexkeys idxk
		ON idxk.id=o.id
			AND idxk.colid=c.colid
	LEFT JOIN sysindexes idx
		ON idx.indid=idxk.indid
			AND idx.id=idxk.id
			AND idx.indid NOT IN(0,255)
	LEFT JOIN sysobjects opk
		ON opk.parent_obj=o.id
			AND opk.name=idx.name
			AND OBJECTPROPERTY(opk.id,N'IsPrimaryKey')=1
ORDER BY o.name,c.colid