sp_QuickieStore: rewrite representative text query for @find_high_impact#702
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erikdarlingdata merged 2 commits intomainfrom Mar 23, 2026
Merged
sp_QuickieStore: rewrite representative text query for @find_high_impact#702erikdarlingdata merged 2 commits intomainfrom
erikdarlingdata merged 2 commits intomainfrom
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…on nvarchar(max) The #hi_representative_text query grouped by query_hash + query_sql_text, forcing the Hash Aggregate to hash nvarchar(max) values. Rewritten to group by query_hash + query_text_id (both fixed-width) in a subquery, then join back to query_store_query_text only for the rn=1 winner. Tested on SQL2022 and SQL2016. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
sp_QuickieStore: rewrite representative text query to avoid grouping on nvarchar(max)
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Summary
Rewrites the representative text query to group by
query_hash + query_text_id(fixed-width) instead ofquery_hash + query_sql_text(nvarchar(max)), then joins text only for the winner. Eliminates expensive Hash Aggregate on large string data.Tested on SQL2022 and SQL2016.
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