mymeiyi commented on code in PR #31666:
URL: https://github.com/apache/doris/pull/31666#discussion_r1512053932


##########
fe/fe-core/src/main/java/org/apache/doris/nereids/trees/plans/commands/insert/InsertUtils.java:
##########
@@ -162,6 +162,10 @@ private static InternalService.PDataRow 
getRowStringValue(List<NamedExpression>
     private static void beginBatchInsertTransaction(ConnectContext ctx,
             String dbName, String tblName, List<Column> columns) {
         TransactionEntry txnEntry = ctx.getTxnEntry();
+        if (txnEntry.isTransactionBegan()) {
+            throw new AnalysisException(
+                    "Transaction insert can not insert into values and insert 
into select at the same time");

Review Comment:
   `isTransactionBegan` meas the `insert into select` already began a txn.
   This function will begin a txn for `insert into values`. 
   Currently we forbid it, maybe support it later.



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