data_source_sql

# File activerecord/lib/active_record/connection_adapters/postgresql/schema_statements.rb, line 1118
          def data_source_sql(name = nil, type: nil)
            scope = quoted_scope(name, type: type)
            scope[:type] ||= "'r','v','m','p','f'" # (r)elation/table, (v)iew, (m)aterialized view, (p)artitioned table, (f)oreign table

            sql = +"SELECT c.relname FROM pg_class c LEFT JOIN pg_namespace n ON n.oid = c.relnamespace"
            sql << " WHERE n.nspname = #{scope[:schema]}"
            sql << " AND c.relname = #{scope[:name]}" if scope[:name]
            sql << " AND c.relkind IN (#{scope[:type]})"
            sql
          end