[core] Fix initRow in AggregateMergeFunction and PartialUpdateMergeFunction to set all fields including nullable ones#7645
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leaves12138 merged 2 commits intoapache:masterfrom Apr 15, 2026
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…nction to set all fields including nullable ones
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Purpose
Fix
initRowinAggregateMergeFunctionandPartialUpdateMergeFunctionto always callsetFieldfor all fields, including nullable ones. Previously, nullable fields were skipped duringinitRow, which could cause inconsistent aggregation results when delete records contain null values in nullable columns.Tests
AggregateMergeFunctionTest
PartialUpdateMergeFunctionTest