Sql語句查看表結(jié)構(gòu)

（1）
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(biāo)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(jié)數(shù)=a.length,
長度=COLUMNPROPERTY(a.id,a.name,'PRECISION'),
小數(shù)位數(shù)=isnull(COLUMNPROPERTY(a.id,a.name,'Scale'),0),
允許空=case?when?a.isnullable=1?then?'√'else?''?end,
默認(rèn)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

（2）

SQL2000系統(tǒng)表的應(yīng)用
--1：獲取當(dāng)前數(shù)據(jù)庫中的所有用戶表

select?Name?from?sysobjects?where?xtype='u'?and?status>=0

--2：獲取某一個表的所有字段

select?name?from?syscolumns?where?id=object_id('表名')

--3：查看與某一個表相關(guān)的視圖、存儲過程、函數(shù)

select?a.*?from?sysobjects?a,?syscomments?b?where?a.id?=?b.id?and?b.text?like?'%表名%'

--4：查看當(dāng)前數(shù)據(jù)庫中所有存儲過程

select?name?as?存儲過程名稱?from?sysobjects?where?xtype='P'

--5：查詢用戶創(chuàng)建的所有數(shù)據(jù)庫

select?*?from?master..sysdatabases?D?where?sid?not?in(select?sid?from?master..syslogins?where?name='sa')

或者

select?dbid,?name?AS?DB_NAME?from?master..sysdatabases?where?sid?<>?0x01

--6：查詢某一個表的字段和數(shù)據(jù)類型

select?column_name,data_type?from?information_schema.columns
where?table_name?=?'表名'

--7:取得表字段的描述
select?name,
(select?value?from?sysproperties?where?id?=?syscolumns.id?and?smallid=syscolumns.colid)?as?描述
from?syscolumns?where?id=object_id('表名')