alex-plekhanov commented on a change in pull request #9581:
URL: https://github.com/apache/ignite/pull/9581#discussion_r761782205
##########
File path:
modules/calcite/src/main/java/org/apache/ignite/internal/processors/query/calcite/schema/TableDescriptorImpl.java
##########
@@ -470,6 +470,31 @@ private IgniteCheckedException
instantiationException(String typeName, Reflectiv
return F.t(key, val);
}
+ /** */
+ private <Row> IgniteBiTuple mergeTuple(Row row, List<String>
updateColList, ExecutionContext<Row> ectx)
+ throws IgniteCheckedException {
+ RowHandler<Row> hnd = ectx.rowHandler();
+
+ int rowColumnsCnt = hnd.columnCount(row);
+
+ if (rowColumnsCnt == descriptors.length)
+ return F.t(insertTuple(row, ectx), null); // Only WHEN NOT MATCHED
clause in MERGE.
+ else if (rowColumnsCnt == descriptors.length + updateColList.size())
+ return F.t(null, updateTuple(row, updateColList, 0, ectx)); //
Only WHEN MATCHED clause in MERGE.
+ else {
+ // Both WHEN MATCHED and WHEN NOT MATCHED clauses in MERGE.
+ assert rowColumnsCnt == descriptors.length * 2 +
updateColList.size() : "Unexpected columns count: " +
+ rowColumnsCnt;
+
+ int updateOffset = descriptors.length; // Offset of fields for
update statement.
+
+ if (hnd.get(updateOffset + QueryUtils.KEY_COL, row) != null)
+ return F.t(null, updateTuple(row, updateColList, updateOffset,
ectx));
Review comment:
Ok, I will change T2 to T3 with the operation type as the third field.
BTW, what standard supports merge delete? In 2003 standard only merge update
is supported. Currently, Calcite also supports only merge update.
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