korlov42 commented on code in PR #7355:
URL: https://github.com/apache/ignite-3/pull/7355#discussion_r2681703332


##########
modules/sql-engine/src/main/java/org/apache/ignite/internal/sql/engine/prepare/IgniteSqlToRelConverter.java:
##########
@@ -145,14 +145,50 @@ public SqlNode validateExpression(RelDataType rowType, 
SqlNode expr) {
      *
      * @param node The AST root to convert.
      * @param scope The scope to use to resolve column reference, if any.
-     * @param inputRowType The input row type. Should be provided if 
expression contains any column references.
+     * @param inputRowTypes The types of the input which can be referenced in 
the expression.
+     *      Should be provided if expression contains any column references.
      * @return A converted expression tree.
      */
-    public RexNode convertExpressionExt(SqlNode node, SqlValidatorScope scope, 
@Nullable RelDataType inputRowType) {
+    public RexNode convertExpressionExt(SqlNode node, SqlValidatorScope scope, 
RelDataType... inputRowTypes) {

Review Comment:
   initially I thought it doesn't worth the hassle, but turns out setup for the 
test is not that bad, hence test has been added. Thanks for highlighting



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