[fix](cloud) fix strict mode invalidation when copy.use_delete_sign i…

…s true for copy into (apache#37650)

Fix strict mode invalidation when copy.use_delete_sign is true for copy
into

Co-authored-by: Xin Liao <liaoxinbit@126.com>

fe/fe-core/src/main/java/org/apache/doris/analysis/CopyFromParam.java

@@ -147,10 +147,16 @@ public void analyze(String fullDbName, TableName tableName, boolean useDeleteSig
  }
  } else {
  for (int i = 0; i < targetColumns.size(); i++) {
- BinaryPredicate binaryPredicate = new BinaryPredicate(Operator.EQ,
- new SlotRef(null, targetColumns.get(i)),
- new SlotRef(null, fileColumns.get(i)));
- columnMappingList.add(binaryPredicate);
+ // If file column name equals target column name, don't need to add to
+ // columnMapping List. Otherwise it will result in invalidation of strict
+ // mode. Because if the src data is an expr, strict mode judgment will
+ // not be performed.
+ if (!fileColumns.get(i).equalsIgnoreCase(targetColumns.get(i))) {
+ BinaryPredicate binaryPredicate = new BinaryPredicate(Operator.EQ,
+ new SlotRef(null, targetColumns.get(i)),
+ new SlotRef(null, fileColumns.get(i)));
+ columnMappingList.add(binaryPredicate);
+ }
  }
  }
  }