select a.name,b.name from sysobjects a,syscolumns b where a.id=b.id and a.xtype='U' and a.name='student'
select b.name from sysobjects a,syscolumns b where a.id=b.id and a.xtype='U' and a.name='student'--邹建写的一个查询表结构 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=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
--查询表结构信息 --邹老大的 SELECT 表名=case when a.colorder=1 then d.name else '' end, 表说明=case when a.colorder=1 then isnull(f.value,'') else '' end, 字段序号=a.colorder, 字段名=a.name, 标识=case when COLUMNPROPERTY( a.id,a.name,'IsIdentity')=1 then '√'else '' end, 主键=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, 类型=b.name, 占用字节数=a.length, 长度=COLUMNPROPERTY(a.id,a.name,'PRECISION'), 小数位数=isnull(COLUMNPROPERTY(a.id,a.name,'Scale'),0), 允许空=case when a.isnullable=1 then '√'else '' end, 默认值=isnull(e.text,''), 字段说明=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='要查询的表' --如果只查询指定表,加上此条件 order by a.id,a.colorder
對不起、這是再Oracle中用的。好像不能用嗎
desc table_name --可以查询表的结构
select a.name as tablename,b.name as colname from syscolumns b, sysobjects a where a.id=b.id and type='u' and a.name like '%tablename%'
表名要大写: select * from user_tab_columns where table_name = upper('TableName')
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=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
--邹老大的
SELECT
表名=case when a.colorder=1 then d.name else '' end,
表说明=case when a.colorder=1 then isnull(f.value,'') else '' end,
字段序号=a.colorder,
字段名=a.name,
标识=case when COLUMNPROPERTY( a.id,a.name,'IsIdentity')=1 then '√'else '' end,
主键=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,
类型=b.name,
占用字节数=a.length,
长度=COLUMNPROPERTY(a.id,a.name,'PRECISION'),
小数位数=isnull(COLUMNPROPERTY(a.id,a.name,'Scale'),0),
允许空=case when a.isnullable=1 then '√'else '' end,
默认值=isnull(e.text,''),
字段说明=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='要查询的表' --如果只查询指定表,加上此条件
order by a.id,a.colorder
where a.id=b.id and type='u' and a.name like '%tablename%'
select * from user_tab_columns where table_name = upper('TableName')