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https://issues.apache.org/jira/browse/DRILL-7406?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17004220#comment-17004220
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ASF GitHub Bot commented on DRILL-7406:
---------------------------------------

vvysotskyi commented on pull request #1940: DRILL-7406: Update Calcite to 1.21.0
URL: https://github.com/apache/drill/pull/1940#discussion_r361660467
 
 

 ##########
 File path: 
exec/java-exec/src/main/java/org/apache/drill/exec/planner/sql/DrillConvertletTable.java
 ##########
 @@ -138,14 +105,209 @@ public SqlRexConvertlet get(SqlCall call) {
       ((SqlBasicCall) call).setOperator(wrapper);
       return sqlRexConvertlet;
     }
-
-    if ((convertlet = map.get(call.getOperator())) != null) {
+    if ((convertlet = operatorToConvertletMap.get(call.getOperator())) != 
null) {
       return convertlet;
     }
-
     return StandardConvertletTable.INSTANCE.get(call);
   }
 
-  private DrillConvertletTable() {
+  /**
+   * Custom convertlet to handle extract functions. Optiq rewrites
+   * extract functions as divide and modulo functions, based on the
+   * data type. We cannot do that in Drill since we don't know the data type
+   * till we start scanning. So we don't rewrite extract and treat it as
+   * a regular function.
+   */
+  private SqlRexConvertlet extract() {
 
 Review comment:
   Please make them static and add `Convertlet` to method names.
 
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> Update Calcite to 1.21.0
> ------------------------
>
>                 Key: DRILL-7406
>                 URL: https://issues.apache.org/jira/browse/DRILL-7406
>             Project: Apache Drill
>          Issue Type: Task
>          Components: Query Planning & Optimization, SQL Parser
>    Affects Versions: 1.17.0
>            Reporter: Igor Guzenko
>            Assignee: Igor Guzenko
>            Priority: Major
>             Fix For: 1.18.0
>
>
> DRILL-7340 should be fixed by this update.



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