SELECT * FROM Master..SysDatabases ORDER BY Name SELECT Name,* FROM Master..SysDatabases where Name='TestDB' SELECT COLUMN_NAME,DATA_TYPE FROM INFORMATION_SCHEMA.columns WHERE TABLE_CATALOG like '%TestDB%' SELECT * FROM INFORMATION_SCHEMA.columns SELECT * FROM INFORMATION_SCHEMA.columns WHERE TABLE_NAME like '%Com_UserLogin%'
string connectionString = "Server=.;UID='" + uid + "';PWD='" + pwd + "';DATABASE='" + db + "'"; string[] restriction = new string[4]; restriction[1] = "dbo"; SqlConnection conn = new SqlConnection(connectionString); conn.Open(); DataTable dt = conn.GetSchema("Tables", restriction);
SELECT (case when a.colorder=1 then d.name else '' end) 表名, a.colorder 字段序號, a.name 字段名, (case when COLUMNPROPERTY( a.id,a.name,'IsIdentity')=1 then '√'else '' end) 標識, (case when (SELECT count(*) FROM sysobjects WHERE (name in (SELECT name FROM sysindexes WHERE (id = a.id) AND (indid in (SELECT indid FROM sysindexkeys WHERE (id = a.id) AND (colid in (SELECT colid FROM syscolumns WHERE (id = a.id) AND (name = a.name) ) ) ) ) ) ) AND (xtype = 'PK') ) > 0 then '√' else '' end) 主鍵, b.name 類型, a.length 占用字節數, COLUMNPROPERTY(a.id,a.name,'PRECISION') as 長度, isnull(COLUMNPROPERTY(a.id,a.name,'Scale'),0) as 小數位數, (case when a.isnullable=1 then '√'else '' end) 允許空, isnull(e.text,'') 默認值, isnull(g.[value],'') AS 字段說明 FROM syscolumns a left join systypes b on a.xtype=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 sys.extended_properties g on a.id=g.major_id AND a.colid = g.minor_id --where d.name in ('Contact','StockBmps','AddressType')---查詢具體的表,注釋掉后就是查詢整個數據庫了 order by a.id,a.colorder