Support standard UNION/INTERSECT syntax#248

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dinodork wants to merge 5 commits intohyrise:masterfrom dinodork:query-expression

+5,383-6,340

Commits on Sep 19, 2024

Added standard support for CXXFLAGS.
Martin Hansson
committed
Initial refactoring.
Martin Hansson
committed
All of these queries are valid standard SQL. Thanks to the previous
Martin Hansson
committed
The previous change actually destroyed the part of subquery
Martin Hansson
committed
Manual edit needed after running format.sh.
Martin Hansson
committed