FrankChen021 commented on a change in pull request #11894:
URL: https://github.com/apache/druid/pull/11894#discussion_r748794899



##########
File path: 
server/src/main/java/org/apache/druid/metadata/SQLMetadataConnector.java
##########
@@ -283,6 +283,11 @@ public void createSegmentTable(final String tableName)
                 "CREATE INDEX idx_%1$s_datasource_used_end ON %1$s(dataSource, 
used, %2$send%2$s)",
                 tableName,
                 getQuoteString()
+            ),
+            StringUtils.format(
+                "CREATE INDEX idx_%1$s_datasource_used_start_end ON 
%1$s(dataSource, used, start, %2$send%2$s)",
+                tableName,
+                getQuoteString()

Review comment:
       Since this index contains all fields in the 2nd index above, can we 
delete the index above?




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