SQL standard UPSERT call

Question

I\'m looking for a standard SQL \"UPSERT\" statement. A one call for insert and update if exists.

I\'m looking for a working, efficient and cross platfo

Answer 1

The syntax for doing an upsert in a single command varies by RDBMS.

• MySQL
  INSERT…ON DUPLICATE KEY UPDATE
• HSQLDB
  MERGE
• Postgres
  INSERT…ON CONFLICT…

See Wikipedia for more.

If you want a cross platform solution, then you'll need to use multiple commands. First check for the existing row, then conditionally insert or update as appropriate.