SqlServer的 timestamp数据类型
2008-12-15 10:16:46 来源:WEB开发网--时间戳类型和bigint互相转化示例:by jinjazz
set nocount on
--申明3个时间戳
declare @timeFlag1 bigint
declare @timeFlag2 bigint
declare @timeFlag3 bigint
--建立表,timestamp类型不需要字段名
create table test(timestamp,a int)
--插入1 记录时间戳,@@dbts为数据库时间戳
insert into test select null,1
set @timeFlag1=cast(@@dbts as bigint)
--插入2 记录时间戳
insert into test select null,2
set @timeFlag2=cast(@@dbts as bigint)
--更新3 记录时间戳
update test set a=3 where a=2
set @timeFlag3=cast(@@dbts as bigint)
--时间戳1的记录
select *from test where timestamp=cast(@timeFlag1 as varbinary(8))
--时间戳2的记录已经不存在了
select *from test where timestamp=cast(@timeFlag2 as varbinary(8))
--时间戳3的记录
select *from test where timestamp=cast(@timeFlag3 as varbinary(8))
--删除表
drop table test
set nocount off
/**//*--测试结果
timestamp a
------------------ -----------
0x000000000000B553 1
timestamp a
------------------ -----------
timestamp a
------------------ -----------
0x000000000000B555 3
*/
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