我想使用where子句将少量记录从test table更新到testResult表,如下所示,但我得到了所有唯一值。我知道为什么我会这样。
UPDATE testResult
SET TRM = te.TRM, timeStamp = te.timeStamp, FWD = te.FWD, OverAll = te.OverAll, ExRFln = te.ExRFln, ExDuty = te.ExDuty, VSWR = te.VSWR, REVPWR = te.REVPWR,
coordinateA = te.coordinateA, coordinateB = te.coordinateB
FROM test AS te CROSS JOIN
testResult
WHERE (te.timeStamp BETWEEN CONVERT(datetime, '2013-09-05 18:23:50', 120) AND CONVERT(datetime, '2013-09-05 18:24:59', 120))
所有列都有与测试表对应的唯一数据,其中timeStamp是2013-09-05 18:23:50
这是显示列值的测试表截图
这是执行后显示的testResult屏幕截图
答案 0 :(得分:0)
我认为你可以实现你想要的目标:
select *
into testResult
from test
where timeStamp BETWEEN CONVERT(datetime, '2013-09-05 18:23:50', 120) AND
CONVERT(datetime, '2013-09-05 18:24:59', 120)
(仅当testResult表尚不存在时才会起作用)