Valid GROUP BY query doesn't work when combined with INSERT INTO on Oracle

Question

I\'m trying to write an INSERT INTO that does a some DISTINCT/GROUP BY work. The query runs perfectly fine as a select statement, but will not work if it\'s wrapped into an INS

Answer 1

I arrived here trying to solve a similar situation so it seems to me that this kind of problem still appears.

In my case, avoiding any optimizer transformation, did the trick.

I applied a NO_QUERY_TRANSFORMATION hint to the "intoed" SELECT statement and the error disappeared.

In the case of this question, I should rewrite it as:

INSERT INTO MasterRecords
  (BatchRecordRecordID, SourceID, BatchID)
SELECT /*+NO_QUERY_TRANSFORMATION*/ RecordID, SourceID, BatchID
FROM (
    SELECT RecordID, BatchID, 101 AS SourceID
    FROM BatchRecords
    WHERE BatchID = 150
    GROUP BY RecordID, BatchID
) BR