[GitHub] [arrow-datafusion] alamb commented on a diff in pull request #4555: fix: remove wrong comment about `having`

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

alamb commented on code in PR #4555:
URL: https://github.com/apache/arrow-datafusion/pull/4555#discussion_r1044354278


##########
datafusion/sql/src/planner.rs:
##########
@@ -1151,12 +1151,10 @@ impl<'a, S: ContextProvider> SqlToRel<'a, S> {
                 //
                 // For example:
                 //
-                //   SELECT c1 AS m FROM t HAVING m > 10;

Review Comment:
   Postgres agrees:
   
   ```sql
   postgres=# create table t (c1 int);
   CREATE TABLE
   postgres=# insert into t  values (1), (2);
   INSERT 0 2
   postgres=# SELECT c1 AS m FROM t HAVING m > 10;
   ERROR:  column "m" does not exist
   LINE 1: SELECT c1 AS m FROM t HAVING m > 10;
                                        ^
   postgres=# 
   ```



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