branch-4.1: [feature](variant) Add native ColumnVariantV2 execution - #66188
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branch-4.1: [feature](variant) Add native ColumnVariantV2 execution#66188eldenmoon wants to merge 1 commit into
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Thank you for your contribution to Apache Doris. Please clearly describe your PR:
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### What problem does this PR solve? Issue Number: None Related PR: apache#65561 Problem Summary: Backport native ColumnVariantV2 execution to branch-4.1. The original change also altered legacy Variant analysis when enable_variant_v2 was disabled. Preserve branch-4.1 legacy GROUP BY, DISTINCT, set-operation, implicit JSON-cast, root comparison, and common-type behavior while enabling canonical Variant V2 execution when the session variable is enabled. ### Release note Add native Variant V2 execution behind enable_variant_v2 on branch-4.1 while preserving legacy Variant behavior when disabled. ### Check List (For Author) - Test: - Regression test: variant_p0 test_variant_equality_contexts, test_variant_ordering_comparison_error, variant_parse_functions, variant_compute_v2 - Unit Test: 133 focused FE tests; 228 focused BE tests (1 additional disabled test) - Build: ASAN BE build and FE build - Behavior changed: Yes. Variant V2 execution is enabled only when enable_variant_v2=true; legacy Variant behavior remains unchanged when false. - Does this need documentation: No
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July 28, 2026 12:59
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cherry-pick #65561