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-rw-r--r--activerecord/lib/active_record/connection_adapters/postgresql/schema_statements.rb16
1 files changed, 13 insertions, 3 deletions
diff --git a/activerecord/lib/active_record/connection_adapters/postgresql/schema_statements.rb b/activerecord/lib/active_record/connection_adapters/postgresql/schema_statements.rb
index a8895f8606..8678fab2ac 100644
--- a/activerecord/lib/active_record/connection_adapters/postgresql/schema_statements.rb
+++ b/activerecord/lib/active_record/connection_adapters/postgresql/schema_statements.rb
@@ -38,7 +38,7 @@ module ActiveRecord
" TABLESPACE = \"#{value}\""
when :connection_limit
" CONNECTION LIMIT = #{value}"
- else
+ else
""
end
end
@@ -375,7 +375,7 @@ module ActiveRecord
if respond_to?(method, true)
sqls, procs = Array(send(method, table, *arguments)).partition { |v| v.is_a?(String) }
sql_fragments << sqls
- non_combinable_operations << procs if procs.present?
+ non_combinable_operations.concat(procs)
else
execute "ALTER TABLE #{quote_table_name(table_name)} #{sql_fragments.join(", ")}" unless sql_fragments.empty?
non_combinable_operations.each(&:call)
@@ -527,6 +527,14 @@ module ActiveRecord
end
end
+ def foreign_tables
+ query_values(data_source_sql(type: "FOREIGN TABLE"), "SCHEMA")
+ end
+
+ def foreign_table_exists?(table_name)
+ query_values(data_source_sql(table_name, type: "FOREIGN TABLE"), "SCHEMA").any? if table_name.present?
+ end
+
# Maps logical Rails types to PostgreSQL-specific data types.
def type_to_sql(type, limit: nil, precision: nil, scale: nil, array: nil, **) # :nodoc:
sql = \
@@ -739,7 +747,7 @@ module ActiveRecord
def data_source_sql(name = nil, type: nil)
scope = quoted_scope(name, type: type)
- scope[:type] ||= "'r','v','m'" # (r)elation/table, (v)iew, (m)aterialized view
+ scope[:type] ||= "'r','v','m','f'" # (r)elation/table, (v)iew, (m)aterialized view, (f)oreign table
sql = "SELECT c.relname FROM pg_class c LEFT JOIN pg_namespace n ON n.oid = c.relnamespace".dup
sql << " WHERE n.nspname = #{scope[:schema]}"
@@ -756,6 +764,8 @@ module ActiveRecord
"'r'"
when "VIEW"
"'v','m'"
+ when "FOREIGN TABLE"
+ "'f'"
end
scope = {}
scope[:schema] = schema ? quote(schema) : "ANY (current_schemas(false))"