Support UNION query (Postgres + MySQL) #896
Merged
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Hi,
This is a follow up on #790, I have implemented UNION support for MySQL. This pull request contains changes to the
compiler
, new test cases, and changes toengine/dolphin
. I cleaned up the commit history to fit the changes in 3 commits.If it is OK, we can close #790 and replace it by this pull request. It should fix #568, #709, #723 and #843.