josh-fell commented on code in PR #29158:
URL: https://github.com/apache/airflow/pull/29158#discussion_r1091430214
##########
docs/apache-airflow/tutorial/pipeline.rst:
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@@ -170,7 +170,7 @@ Here we select completely unique records from the retrieved
data, then we check
FROM employees_temp
) t
ON CONFLICT ("Serial Number") DO UPDATE
- SET "Serial Number" = excluded."Serial Number";
+ SET "Serial Number" = t."Serial Number";
Review Comment:
Looks like the issue with the subquery alias was already handled in #28353.
The update should be done with `excluded` values.
However, this merge query doesn't make any functional sense. It's trying to
insert into `employees`, if there is a unique constraint violation on `Serial
Number` then update `Serial Number` with the value that caused the violation
(aka update `Serial Number` with its own value). If there is a unique
constraint violation, it would make more practical sense to update other
columns from the `excluded` values.
```suggestion
SET
"Employee Markme" = excluded."Employee Markme",
"Description" = excluded."Description",
"Leave" = excluded."Leave";
```
WDYT?
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