[GitHub] [flink] sjwiesman commented on a change in pull request #12957: [FLINK-18500][table] Make the legacy planner exception more clear whe…

[GitBox <gi...@apache.org>]

sjwiesman commented on a change in pull request #12957:
URL: https://github.com/apache/flink/pull/12957#discussion_r458966544



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File path: flink-table/flink-table-planner/src/main/java/org/apache/flink/table/planner/ParserImpl.java
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@@ -83,6 +83,6 @@ public UnresolvedIdentifier parseIdentifier(String identifier) {
 
 	@Override
 	public ResolvedExpression parseSqlExpression(String sqlExpression, TableSchema inputSchema) {
-		throw new UnsupportedOperationException();
+		throw new UnsupportedOperationException("Computed column is only supported by Blink planner.");

Review comment:
       ```suggestion
   		throw new UnsupportedOperationException("Computed columns is only supported by the Blink planner.");
   ```




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