types: Fix "Invalid time format" caused by daily saving time (#13614) #13625
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AilinKid
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Nov 20, 2019
winkyao
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cherry-pick #13614 to release-3.0
What problem does this PR solve?
Fix #13605
What is changed and how it works?
Some regions use daylight saving time.
In MySQL, it will throw the error "Invalid time format" when use the
datetimebetween the advanced hour of daylight saving time (e.g. 2018/3/11 2:00~3:00 in Los Angeles). Actually, if the@@time_zonesql variable is set to region where uses daylight saving time, the error occurred. But if the@@time_zoneis other region, no error occurred, even if the system time zone is the region where uses daylight saving time.But TiDB will throw an unexpected error "Invalid time format" when the timezone of system is in region where use daylight saving time.
Fix method:
When checking the time, we use the SQL variable
@@time_zoneinstead of directly use the timezone of system.In details, In
checkTimestampTypefunction, we use theTimeZoneofstatementContext, instead of local timezone provided by Golang.Check List
Tests
Code changes
Side effects
Related changes
Release note