UPSERT in PostgreSQL using jOOQ

jOOQ 3.7+ supports PostgreSQL 9.5’s ON CONFLICT clause:

• https://github.com/jOOQ/jOOQ/issues/4299
• http://www.postgresql.org/docs/9.5/static/sql-insert.html

The full PostgreSQL vendor-specific syntax is not yet supported, but you can use the MySQL or H2 syntax, which can both be emulated using PostgreSQL’s ON CONFLICT:

MySQL INSERT .. ON DUPLICATE KEY UPDATE:

DSL.using(configuration)
   .insertInto(TABLE)
   .columns(ID, A, B)
   .values(1, "a", "b")
   .onDuplicateKeyUpdate()
   .set(A, "a")
   .set(B, "b")
   .execute();

H2 MERGE INTO ..

DSL.using(configuration)
   .mergeInto(TABLE, A, B, C)
   .values(1, "a", "b")
   .execute();