sqlserver 常见使用sql

1使用某个库

?use hongqiao_oa;

2 ?查询当前数据库有哪些表
?
?SELECT Name FROM Master..SysDatabases ORDER BY Name
?SELECT 'select * from '+Name+';' FROM SysObjects Where XType='U' ORDER BY Name;
?

SELECT * FROM SysObjects ;

3 查询表结构信息

SELECT (case when a.colorder=1 then d.name else null end) 表名,? a.colorder 字段序号,a.name 字段名,(case when COLUMNPROPERTY( a.id,a.name,'IsIdentity')=1 then '√'else '' end) 标识,? (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) 主键,b.name 类型,a.length 占用字节数,? COLUMNPROPERTY(a.id,'PRECISION') as 长度,? isnull(COLUMNPROPERTY(a.id,'Scale'),0) as 小数位数,(case when a.isnullable=1 then '√'else '' end) 允许空,? isnull(e.text,'') 默认值,isnull(g.[value],' ') AS [说明] 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 left join sys.extended_properties f on d.id=f.class and f.minor_id=0 where b.name is not null and d.name='tbl_MD_Account' --如果只查询指定表,加上此条件 order by a.id,a.colorder

（编辑：李大同）

【声明】本站内容均来自网络，其相关言论仅代表作者个人观点，不代表本站立场。若无意侵犯到您的权利，请及时与联系站长删除相关内容!