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Fix changelog from #43105

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eileencodes 2021-08-26 14:49:26 -04:00
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activerecord/CHANGELOG.md
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@ -2,9 +2,15 @@
Previously the schema cache methods `primary_keys`, `columns, `columns_hash`, and `indexes`
would behave differently than one another when a table didn't exist and differently across
databases. This change unifies the behavior so that all the methods return `nil` if the table
doesn't exist. While this class is technically public, applications don't interact with the
return values of these methods so it should be safe to make this change.
database adapters. This change unifies the behavior so each method behaves the same regardless
of adapter.
The behavior now is:
`columns`: (unchanged) raises a db error if the table does not exist
`columns_hash`: (unchanged) raises a db error if the table does not exist
`primary_keys`: (unchanged) returns `nil` if the table does not exist
`indexes`: (changed for mysql2) returns `[]` if the table does not exist
*Eileen M. Uchitelle*