feat(graph): add COLLECT aggregation function #85
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Adds COLLECT() aggregation that collects values into an array, translating to DataFusion's array_agg function. - Add collect case in to_df_value_expr for DataFusion translation - Update contains_aggregate to recognize collect - Update semantic validation to allow COLLECT with bare variables - Add tests for COLLECT with and without grouping
beinan
approved these changes
Jan 14, 2026
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Adds COLLECT() aggregation that collects values into an array, translating to DataFusion's array_agg function.