1.查詢數(shù)據(jù)庫(kù)中的所有數(shù)據(jù)庫(kù)名：

?1 SELECT Name FROM Master..SysDatabases ORDER BY Name?

2.查詢某個(gè)數(shù)據(jù)庫(kù)中所有的表名：

?1 SELECT Name FROM SysObjects Where XType='U' ORDER BY Name?

3.查詢表結(jié)構(gòu)信息：

1 SELECT (case when a.colorder=1 then d.name else null end) 表名, 2 a.colorder 字段序號(hào),a.name 字段名, 3 (case when COLUMNPROPERTY( a.id,a.name,'IsIdentity')=1 then '√'else '' end) 標(biāo)識(shí), 4 (case when (SELECT count(*) FROM sysobjects 5 WHERE (name in (SELECT name FROM sysindexes 6 WHERE (id = a.id) AND (indid in 7 (SELECT indid FROM sysindexkeys 8 WHERE (id = a.id) AND (colid in 9 (SELECT colid FROM syscolumns WHERE (id = a.id) AND (name = a.name))))))) 10 AND (xtype = 'PK'))>0 then '√' else '' end) 主鍵,b.name 類型,a.length 占用字節(jié)數(shù), 11 COLUMNPROPERTY(a.id,a.name,'PRECISION') as 長(zhǎng)度, 12 isnull(COLUMNPROPERTY(a.id,a.name,'Scale'),0) as 小數(shù)位數(shù),(case when a.isnullable=1 then '√'else '' end) 允許空, 13 isnull(e.text,'') 默認(rèn)值,isnull(g.[value], ' ') AS [說(shuō)明] 14 FROM syscolumns a 15 left join systypes b on a.xtype=b.xusertype 16 inner join sysobjects d on a.id=d.id and d.xtype='U' and d.name<>'dtproperties' 17 left join syscomments e on a.cdefault=e.id 18 left join sys.extended_properties g on a.id=g.major_id AND a.colid=g.minor_id 19 left join sys.extended_properties f on d.id=f.class and f.minor_id=0 20 where b.name is not null 21 --WHERE d.name='要查詢的表' --如果只查詢指定表,加上此條件 22 order by a.id,a.colorder

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轉(zhuǎn)載于:https://www.cnblogs.com/a-dou/articles/5194933.html

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