database/mariadb-columnstore-engine
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fix(group by, having): MCOL-5776: GROUP BY/HAVING closer to server's (#3371)

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This patch introduces an internal aggregate operator SELECT_SOME that
is automatically added to columns that are not in GROUP BY. It
"computes" some plausible value of the column (actually, last one
passed).

Along the way it fixes incorrect handling of HAVING being transferred
into WHERE, window function handling and a bit of other inconsistencies.
This commit is contained in:
Sergey Zefirov
2024-12-20 22:11:47 +03:00
committed by GitHub
parent 073f0b7f41
commit 60dc7550f1
20 changed files with 601 additions and 131 deletions
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dbcon/execplan/simplecolumn.h
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@ -70,6 +70,7 @@ class SimpleColumn : public ReturnedColumn
SimpleColumn(const std::string& schema, const std::string& table, const std::string& col,
const bool isColumnStore, const uint32_t sessionID = 0, const int lower_case_table_names = 0);
SimpleColumn(const SimpleColumn& rhs, const uint32_t sessionID = 0);
SimpleColumn(const ReturnedColumn& rhs, const uint32_t sessionID = 0);
/**
* Destructor