查询锁定表中所有记录。 查询锁定表中所有记录。 select * from authors with (nolock)
查询锁定表中非锁定记录。 查询锁定表中非锁定记录。 select * from authors whth (readpast)
select a,b,c,d from tablename group by a,b,c,d having count(*)>1
方法一: delete from tb_channel a where a.rowid in (select max(b.rowid) from tb_channle b where
1. 查看表的具体情况 查看是不是分区表,有多少个分区、分区字段: SQL> col table_name for a20 SQL> col column_name for a
数据库结构的脚本: if exists (select * from dbo.sysobjects where id = object_id(N'.') and OBJECTPRO
1. 查看表的具体情况 查看是不是分区表,有多少个分区、分区字段: SQL col table_name for a20 SQL col column_name for a20 S
如何查找、删除表中重复的记录 如何查找、删除表中重复的记录 如何查找、删除表中重复的记录 软件环境: 1、Windows NT4.0+ORACLE 8.0.4 2
从publish 表中取出第 n 条到第 m 条的记录: SELECT TOP m-n+1 * FROM publish WHERE (id NOT IN (SELECT TOP n
1. 查看表的具体情况 查看是不是分区表,有多少个分区、分区字段: SQL> col table_name for a20 SQL> col column_name