Revert "Merge pull request #13344 from ccutrer/fix-from-default-select"

This reverts commit 3ea840355409dc205a9e0d027fc09f1452636969, reversing
changes made to e4cde5d58cbb09d1843796f96ba86225ff94fe05.

Conflicts:
	activerecord/CHANGELOG.md
	activerecord/lib/active_record/relation/query_methods.rb

Reason: using `from` without `select` should not change the select list
to SELECT * because it can lead different query results. If it is needed
to change the table to a subquery or a view you can pass a table alias
in the `from` call or use `select('subquery.*')`.

Fixes #14049.

1 files changed, 0 insertions, 16 deletions

diff --git a/activerecord/CHANGELOG.md b/activerecord/CHANGELOG.md
index e49a0f1323..458b9d77c2 100644
--- a/activerecord/CHANGELOG.md
+++ b/activerecord/CHANGELOG.md
@@ -533,22 +533,6 @@
 
     *Damien Mathieu*
 
-*   Improve the default select when `from` is used.
-
-    Previously, if you did something like Topic.from(:temp_topics), it
-    would generate SQL like:
-
-        SELECT topics.* FROM temp_topics;
-
-    Which is will cause an error since there's not a topics table to select
-    from.
-
-    Now the default if you use from is just `*`:
-
-        SELECT * FROM temp_topics;
-
-    *Cody Cutrer*
-
 *   Fix `PostgreSQL` insert to properly extract table name from multiline string SQL.
 
     Previously, executing an insert SQL in `PostgreSQL` with a command like this: