julianhyde commented on code in PR #4289:
URL: https://github.com/apache/calcite/pull/4289#discussion_r2039908297


##########
core/src/main/java/org/apache/calcite/sql/validate/SqlConformance.java:
##########
@@ -102,6 +102,28 @@ public interface SqlConformance {
    */
   boolean isGroupByAlias();
 
+  /**
+   * Value describing how to perform lookup for values defined in a SELECT 
statement.
+   */
+  enum SelectAliasLookup {
+    /** Values defined in a SELECT statement are not visible within the 
statement. */
+    UNSUPPORTED,
+    /** Values defined in a SELECT statement are visible to the right of their 
definition. */

Review Comment:
   Mention 'lateral'



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