GROUP BY CUBE / ROLLUP / GROUPING SETS#265

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mlell wants to merge 10 commits intobeancount:masterfrom

mlell:dev-group-rollup

Commits on Dec 9, 2025

Implement GROUP BY ROLLUP (col1, col2, ...)
mlell
committed
Add a "Sentinel" object to provide row headers for summarizations, like (Total), (earlier), (other)
mlell
committed

Commits on Dec 10, 2025

Deal with multiple data types (e.g. Sentinel objects) when rendering columns
mlell
committed
Support PIVOT BY after GROUP BY ROLLUP by using a sentinel instead of NULL for subtotals
mlell
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Rename Rollup Sentinel for better consistency
mlell
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Implement GROUP BY CUBE / GROUPING SETS
mlell
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Do cartesian product when combining ROLLUP, CUBE, GROUPING SET. Also, refactor _select(), remove _compile_select_base() to move closer to the original logic before ROLLUP, CUBE, etc.
mlell
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Replace separate rollup/cube/sets flags with unified 'type' field in AST
mlell
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Add tests for GROUP BY CUBE / ROLLUP
mlell
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Refactor BQL grammar to standardize GROUP BY modifier handling
mlell
committed