saihemanth-cloudera commented on code in PR #4569: URL: https://github.com/apache/hive/pull/4569#discussion_r1336498016
########## standalone-metastore/metastore-server/src/main/sql/mssql/hive-schema-4.0.0-beta-2.mssql.sql: ########## @@ -661,6 +661,8 @@ ALTER TABLE NOTIFICATION_LOG ADD CONSTRAINT NOTIFICATION_LOG_PK PRIMARY KEY (NL_ CREATE UNIQUE INDEX NOTIFICATION_LOG_EVENT_ID ON NOTIFICATION_LOG (EVENT_ID); +CREATE UNIQUE INDEX NOTIFICATION_LOG_UNIQUE_DB ON NOTIFICATION_LOG (DB_NAME, EVENT_ID); Review Comment: Any DBMS would use one and only one index to query the result. So depending on the query on the notification log table, it has to use index 1 or index 2. -- 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]
