chore: fix subquery for mysql

Author: bethesque

lib/pact_broker/pacts/repository.rb

@@ -104,7 +104,7 @@ def delete params
           .consumer_name_like(params.consumer_name)
           .provider_name_like(params.provider_name)
           .consumer_version_number_like(params.consumer_version_number)
-          .select_for_subquery(Sequel[:pact_publications][:id])
+          .select_for_subquery(Sequel[:pact_publications][:id].as(:id))
         unscoped(PactPublication).where(id: id).delete
       end
 

lib/pact_broker/repositories/helpers.rb

@@ -44,8 +44,9 @@ def select_all_qualified
       end
 
       def select_for_subquery column
-        if mysql? #stoopid mysql doesn't allow subqueries
-          select(column).collect{ | it | it[column] }
+        if mysql? #stoopid mysql doesn't allow you to modify datasets with subqueries
+          column_name = column.respond_to?(:alias) ? column.alias : column
+          select(column).collect{ | it | it[column_name] }
         else
           select(column)
         end