diff options
| -rw-r--r-- | activerecord/lib/active_record/connection_adapters/postgresql/schema_statements.rb | 10 |
1 files changed, 9 insertions, 1 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 55566f1e34..cb45d7ba6b 100644 --- a/activerecord/lib/active_record/connection_adapters/postgresql/schema_statements.rb +++ b/activerecord/lib/active_record/connection_adapters/postgresql/schema_statements.rb @@ -290,9 +290,17 @@ module ActiveRecord if pk && sequence quoted_sequence = quote_table_name(sequence) + max_pk = select_value("select MAX(#{quote_column_name pk}) from #{quote_table_name(table)}") + if max_pk.nil? + if postgresql_version >= 100000 + minvalue = select_value("SELECT seqmin from pg_sequence where seqrelid = '#{quoted_sequence}'::regclass") + else + minvalue = select_value("SELECT min_value FROM #{quoted_sequence}") + end + end select_value(<<-end_sql, "SCHEMA") - SELECT setval('#{quoted_sequence}', (SELECT COALESCE(MAX(#{quote_column_name pk})+(SELECT increment_by FROM #{quoted_sequence}), (SELECT min_value FROM #{quoted_sequence})) FROM #{quote_table_name(table)}), false) + SELECT setval('#{quoted_sequence}', #{max_pk ? max_pk : minvalue}, #{max_pk ? true : false}) end_sql end end |