Vladsz83 commented on code in PR #12113:
URL: https://github.com/apache/ignite/pull/12113#discussion_r2205429423
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modules/calcite/src/main/java/org/apache/ignite/internal/processors/query/calcite/rel/ProjectableFilterableTableScan.java:
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@@ -195,4 +195,13 @@ public RelColumnOrigin columnOriginsByRelLocalRef(int
colIdx) {
return new RelColumnOrigin(getTable(), originColIdx, false);
}
+
+ /** Returns original index of a table column related to the projected
index. */
+ public RelColumnOrigin tableColOffset(int projectColIdx) {
+ int originColIdx = (requiredColumns == null)
+ ? projectColIdx
+ : Commons.mapping(requiredColumns,
getTable().getRowType().getFieldCount()).getTarget(requiredColumns.nth(projectColIdx));
Review Comment:
This is the difference - mapping. Without it,
`IgniteMdRowCount#joinRowCount()` cannot determine proper column origin and
find the index.
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