sql: fix aggregation of statistics

Previously, because we were using a join, we were double counting statistics when we had the same fingerprint in memory and persisted. This commit adds a `DISTINCT` so we only count them once. Fixes #85958 Release note: None
cockroachdb · Aug 11, 2022 · 2e42e58 · 2e42e58
1 parent 8e3ee57
commit 2e42e58
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Showing 2 changed files with 3 additions and 3 deletions.
diff --git a/pkg/sql/crdb_internal.go b/pkg/sql/crdb_internal.go
@@ -5571,7 +5571,7 @@ SELECT
   plan_hash,
   app_name,
   max(metadata) as metadata,
-  crdb_internal.merge_statement_stats(array_agg(statistics)),
+  crdb_internal.merge_statement_stats(array_agg(DISTINCT statistics)),
   max(sampled_plan),
   aggregation_interval,
   array_remove(array_agg(index_rec), NULL) AS index_recommendations

diff --git a/pkg/sql/logictest/testdata/logic_test/create_statements b/pkg/sql/logictest/testdata/logic_test/create_statements
@@ -1512,7 +1512,7 @@ CREATE VIEW crdb_internal.statement_statistics (
     plan_hash,
     app_name,
     max(metadata) AS metadata,
-    crdb_internal.merge_statement_stats(array_agg(statistics)),
+    crdb_internal.merge_statement_stats(array_agg(DISTINCT statistics)),
     max(sampled_plan),
     aggregation_interval,
     array_remove(array_agg(index_rec), NULL) AS index_recommendations
@@ -1571,7 +1571,7 @@ CREATE VIEW crdb_internal.statement_statistics (
     plan_hash,
     app_name,
     max(metadata) AS metadata,
-    crdb_internal.merge_statement_stats(array_agg(statistics)),
+    crdb_internal.merge_statement_stats(array_agg(DISTINCT statistics)),
     max(sampled_plan),
     aggregation_interval,
     array_remove(array_agg(index_rec), NULL) AS index_recommendations