Gitlab::Database::GitlabSchema.table_schema to return nil
What does this MR do and why?
For #388925 (closed)
We require a gitlab_schema
to be set for any created table, but Gitlab::Database::GitlabSchema.table_schema
continue to return undefined_table_name
as the schema name for any table for which it can't find a schema.
We need to change this behaviour to return nil
when Gitlab::Database::GitlabSchema.table_schema
can't find an associated gitlab schema.
Also, Gitlab::Database::GitlabSchema.table_schemas
has been turned in Gitlab::Database::GitlabSchema.table_schemas!
, so that it raises an error when it cannot find schemas for a table.
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Related to #388925 (closed)