
Back-patch to v15, where MERGE command was supported. Author: Fujii Masao Reviewed-by: Alvaro Herrera Discussion: https://postgr.es/m/4e7a4b38-c34a-ce2c-c71e-832d2b768b29@oss.nttdata.com
Back-patch to v15, where MERGE command was supported. Author: Fujii Masao Reviewed-by: Alvaro Herrera Discussion: https://postgr.es/m/4e7a4b38-c34a-ce2c-c71e-832d2b768b29@oss.nttdata.com