korlov42 commented on code in PR #5746:
URL: https://github.com/apache/ignite-3/pull/5746#discussion_r2076941185
##########
modules/sql-engine/src/main/java/org/apache/ignite/internal/sql/engine/rel/ProjectableFilterableTableScan.java:
##########
@@ -173,8 +178,18 @@ public double estimateRowCount(RelMetadataQuery mq) {
/** {@inheritDoc} */
@Override
public RelDataType deriveRowType() {
+ RelDataTypeFactory typeFactory = Commons.typeFactory(getCluster());
+ List<RexNode> projects = this.projects;
+
+ if (projects == null && names != null) {
+ // Let's create fake identity projection just to preserve field
names provided explicitly.
+ RelDataType type =
table.unwrap(IgniteDataSource.class).getRowType(typeFactory, requiredColumns);
+
+ projects = getCluster().getRexBuilder().identityProjects(type);
+ }
+
if (projects != null) {
- return RexUtil.createStructType(Commons.typeFactory(getCluster()),
projects);
+ return RexUtil.createStructType(Commons.typeFactory(getCluster()),
projects, names, ATTEMPT_SUGGESTER);
Review Comment:
fixed, thanks
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