Named window support #6419
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Named window support #6419
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I recommend we wait for #6416 to merge, but we can review this PR earlier. |
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#6416 is merged |
# Please enter a commit message to explain why this merge is necessary, # especially if it merges an updated upstream into a topic branch. # # Lines starting with '#' will be ignored, and an empty message aborts # the commit.
# Conflicts: # datafusion/sql/src/expr/function.rs # datafusion/sql/src/expr/mod.rs # datafusion/sql/src/select.rs # datafusion/sql/src/statement.rs
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I plan to review this tomorrow |
mustafasrepo
approved these changes
May 24, 2023
alamb
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May 24, 2023
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Thanks @berkaysynnada and @mustafasrepo -- I think this looks great!
alamb
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May 25, 2023
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Thanks again @berkaysynnada
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Which issue does this PR close?
Closes #6125.
Rationale for this change
With 0.34 release of sql-parser, statements can differentiate the named windows. We can now support such queries:
What changes are included in this PR?
After the query parse, WindowType of the function can be in the form of WindowSpec or NamedWindow. In
select_to_plan()function, if there exist some NamedWindow's, there are reshaped as WindowSpec's by using the definition of the windows. If there are any undefined windows, an error is generated.sqlparser dependency is also updated to 0.34 with this PR.
Are these changes tested?
Yes, slt tests are added for both working and erroneous conditions.
Are there any user-facing changes?