Konstantin Orlov created IGNITE-18883:
-----------------------------------------
Summary: Bug. Potentially incorrect definition of rows to insert
for MERGE
Key: IGNITE-18883
URL: https://issues.apache.org/jira/browse/IGNITE-18883
Project: Ignite
Issue Type: Bug
Components: sql
Reporter: Konstantin Orlov
Currently we decide whether to insert row or to update row by taking a look at
value at updateOffset. The problem here is that NULL can be a legit value, but
we incorrectly put this row to insert collection:
{code:java}
// ModifyNode#splitMerge
private Pair<List<RowT>, List<RowT>> splitMerge(List<RowT> rows) {
...
if (!hasUpsertSemantic) {
...
} else {
...
for (RowT row : rows) {
if (handler.get(updateColumnOffset, row) == null) {
rowsToInsert.add(row);
} else {
rowsToUpdate.add(row);
}
}
{code}
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