SQL SERVER 查询一个表有多少列

1 select count(*) from sysobjects a 2 join syscolumns b 3 on a.id=b.id 4 where a.name='表名' 5 go

① select count(1) from syscolumns where id=object_id('tablename') ② select count(*) from syscolumns where id=object_id('tablename') ③ select max(colid) from syscolumns where id=object_id('tablename')

SQL Server 查询锁表 select request_session_id spid,OBJECT_NAME(resource_associated_entity_id) as tableName ,* from sys.dm_tran_locks where resource_type='OBJECT' and OBJECT_NAME(resource_associated_entity_id) is not null SQL Server 解锁表 declare @spid int

一.Sql Server中如何判断表中某列是否存在 首先跟大家分享Sql Server中判断表中某列是否存在的两个方法,方法示例如下: 比如说要判断表A中的字段C是否存在两个方法: 第一种方法  ? 1 2 3 4 5 6 7 8 IF EXISTS (  SELECT 1 FROM SYSOBJECTS T1  INNER JOIN SYSCOLUMNS T2 ON T1.ID=T2.ID  WHERE T1.NAME='A' AND T2.NAME='C'  )  PRINT '存在'  E

原文:sql server 查询某个表被哪些存储过程调用 sql server 查询某个表被哪些存储过程调用 select distinct object_name(id) from syscomments where id in (select id from sysobjects where type ='P') and text like'%TableName%' 原文地址:https://www.cnblogs.com/lonelyxmas/p/9491635.html

在SQL Server数据库中表信息会用到Identity关键字来设置自增列.但是当有数据被删除的话,自增列就不连续了.如果想查询出这个表的信息,并添加一列连续自增的ID,可用如下查询语句: select Row_Number() over ( order by getdate() ) as init , * from 表名

1.查询某个表被哪些存储过程(以下简称 SP)使用到 : select distinct object_name(id) from syscomments where id in (select id from sysobjects where type ='P') and text like'%TableName%' 2.查找那些过程对该表做了更新操作: select distinct object_name(id) from syscomments where id in (select i

1.找出这列中有相同内容的列的数据.代码如下: select 列名 from 表名 group by 列名 having count(列名) > 1 2.把这些有相同内容的记录,查出来.代码如下: select 列名 from 表名 where 列名 in (select 列名 from 表名 group by 列名 having count(列名) > 1)

SELECT COUNT(syscolumns.name) FROM syscolumns , sysobjects WHERE syscolumns.id = sysobjects.id AND sysobjects.name = '表名'