Merge old tag history with rename new tag history

[taohongyu88]

@nminchin

before executing that UPDATE query
Excluding a WHERE clause will re-map all history in that table to your new tag.
Using the wrong WHERE clause may have equally catastrophic consequences

I find a new question.
When I update old tag's tagid to new tag's tagid ;
PowerChart show this month's history ,but not show the last month's history?

Power Chart not show the rename tag's last month History? - Ignition - Inductive Automation Forum