ramitg254 commented on code in PR #6089:
URL: https://github.com/apache/hive/pull/6089#discussion_r2621939204
##########
standalone-metastore/metastore-server/src/main/java/org/apache/hadoop/hive/metastore/MetaStoreDirectSql.java:
##########
@@ -1977,47 +2034,29 @@ private List<ColumnStatisticsObj> aggrStatsUseDB(String
catName, String dbName,
// And, we also guarantee that the estimation makes sense by comparing
it to the
// UpperBound (calculated by "sum(\"NUM_DISTINCTS\")")
// and LowerBound (calculated by "max(\"NUM_DISTINCTS\")")
- + "avg((\"LONG_HIGH_VALUE\"-\"LONG_LOW_VALUE\")/cast(\"NUM_DISTINCTS\"
as decimal)),"
- +
"avg((\"DOUBLE_HIGH_VALUE\"-\"DOUBLE_LOW_VALUE\")/\"NUM_DISTINCTS\"),"
- + "avg((cast(\"BIG_DECIMAL_HIGH_VALUE\" as
decimal)-cast(\"BIG_DECIMAL_LOW_VALUE\" as decimal))/\"NUM_DISTINCTS\"),"
+ + "sum((\"LONG_HIGH_VALUE\"-\"LONG_LOW_VALUE\")/cast(\"NUM_DISTINCTS\"
as decimal)),"
+ +
"count((\"LONG_HIGH_VALUE\"-\"LONG_LOW_VALUE\")/cast(\"NUM_DISTINCTS\" as
decimal)),"
Review Comment:
and also if I am understanding it right only one out of long, double and big
decimal expression will be not null according to col type so it will need
checks to find it earlier in order to use count(1)
--
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
To unsubscribe, e-mail: [email protected]
For queries about this service, please contact Infrastructure at:
[email protected]
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
