寫程序數據庫設計會用到的數據庫語句

--查詢表結構
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 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,
--佔用字節數=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,
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 sys.extended_properties g on a.id=g.major_id and a.colid=g.minor_id
left join sys.extended_properties f on d.id=f.major_id and f.minor_id=0
where d.name='表名' --如果只查詢指定表,加上此條件
order by a.id,a.colorder

 查詢當前數據庫有那些表

 SELECT ROW_NUMBER() OVER(ORDER BY sys.tables.name) AS ID,
  sys.tables.name as 表名,
  '' AS 表功能 
  FROM sys.tables