sink/mysql: support translated to insert SQL if old value enabled #955
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What problem does this PR solve?
In MySQL sink, insert is translated to REPLACE SQL, update is translated to DELETE + REPLACE SQL
When old value feature is enabled, we can distinguish whether a SQL is update or insert, so we can translate insert to INSERT SQL and update to UPDATE SQL to increase executing performance.
But in some cases,
update
andinsert
is not reentrant, we also need thesafe-mode
mechanism to force write data.Besides, the more convenient
safe-mode
switch will be implemented in another PR.What is changed and how it works?
safe-mode
option in MySQL sinkCheck List
Tests
Release note