嗨，伙计们！我正在查询大量的历史数据，我注意到弹出的获取行数大约是加载的行数的 3 倍（加载的行数大约是正确的）。我一次获取 1 个月的数据（如果我要求更多，就会中断）并且数据记录器的运行频率略高于 1Hz，这意味着我应该一次获取大约 2.5e6 行，但系统说它获取 7.5e6 行
这是执行查询的代码片段
Open Database(
"driver={SQL Server}; Server=XXXXXXXXXX; database=Runtime; trusted_connection=yes;",
"SET NOCOUNT ON
DECLARE @StartDate DateTime
DECLARE @EndDate DateTime
SET @StartDate = '2023-5-1 00:00:00'
SET @EndDate = '2023-5-31 23:59:59'
SELECT temp.TagName, DateTime = convert(varchar, DateTime, 126), vValue From (
SELECT * FROM History WHERE History.TagName IN (" || tagnamelist || ")
AND vValue IS NOT NULL
AND wwRetrievalMode = 'Delta'
AND wwVersion = 'Latest'
AND DateTime >= @StartDate
AND DateTime <= @EndDate) temp
LEFT JOIN AnalogTag ON AnalogTag.TagName = temp.TagName
LEFT JOIN EngineeringUnit ON AnalogTag.EUKey = EngineeringUnit.EUKey
LEFT JOIN QualityMap ON QualityMap.QualityDetail = temp.QualityDetail
WHERE temp.StartDateTime >= @StartDate"
);以及查询末尾附近弹出窗口的屏幕截图
多谢你们！
