Sj test1#3
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sujay-jain wants to merge 8 commits into
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- Fix the failure when column is null. - Fix incorrect index in default result set converter. - Allow result rows to be ignored.
Support determinism analysis for simple queries with top-level ORDER BY LIMIT clause. Select, Insert, and CreateTableAsSelect are supported, but only when the query part is a Select query, not a SetOperation( i.e., Union, Intersect, and Except). "INSERT INTO ...SELECT ... ORDER BY ... LIMIT ..." is supported. "INSERT INTO ... SELECT ... UNION ALL ... SELECT ... ORDER BY ... LIMIT ..." is not supported. To check for determinism of ORDER BY LIMIT queries, we run the Select query with limit N + 1, project all the necessary ORDER BY columns, and check whether there is a tie on the ORDER BY columns for the n-th row and the (n+1)-th row.
SMILE support has flaky edge cases, and we cache the serialization now which already has reduced the cost.
Wait for final task info on abort to avoid missing task statistics in case when query finishes before the final task info is received by the TaskInfoFetcher.
Without this fix, the ConnectionSession was created without any session properties and hence the implementation which tried to use session properties failed.
Fix the problem downstream operators might receive LazyBlock after scan introduced by prestodb#14169
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