就是如何查看约束 表结构等 用sql语句
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alt+f1 默认快捷键，可以查看表结构和约束等
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- SQL code
---------表结构信息查询------------------sql server 2000SELECT 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 aleft join systypes b on a.xusertype=b.xusertypeinner join sysobjects d on a.id=d.id and d.xtype='U' and d.name<>'dtproperties'left join syscomments e on a.cdefault=e.idleft 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=0where 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/*表名 表说明 字段序号 字段名 标识 主键 类型 占用字节数 长度 小数位数 允许空 默认值 字段说明 ------- ----- ------- -------- ---- ------- ------ ------- --------------- ------ ---------- ---------- authors 1 au_id √ id 11 11 0 2 au_lname varchar 40 40 0 3 au_fname varchar 20 20 0 4 phone char 12 12 0 ('UNKNOWN') 5 address varchar 40 40 0 √ 6 city varchar 20 20 0 √ 7 state char 2 2 0 √ 8 zip char 5 5 0 √ 9 contract bit 1 1 0 （所影响的行数为 9 行）*/--------------------------------------------------------------------
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sp_help 表，这个是sql server自带存储过程，相当于sql，可以直接执行