Inout parameters

BigQueryDb2 (LUW)MariaDBMySQLOracle DBPostgreSQLSQL ServerSQLite200520072009201120132015201720192021⚠ 2017 - 2019c✓ 14+⚠ 18c - 21ca⊘ 11gR1 - 12cR2✓ 5.0+✓ 10.3+⊘ 5.1 - 10.2✓ 11.1+⊘ 2.0
  1. Proprietary syntax: <varname> in|out|in out <type name>
  2. Not supported by the latest JDBC driver, which I use for testing
  3. Proprietary syntax: <varname> <type name> output (output has inout semantics)