jOOQ "IN" Predicate with Degree N Tuples

Question

I need a WHERE clause to check tuples IN a list: (field1, field2) in (('1', 1), ('2', 2), ('3', 3)). This is valid SQL in Postgres.

Dialect: POSTGRES

jOOQ Version: 3.9.6

What is the correct jOOQ syntax for this case?

jOOQ 3.9 documentation implies this is possible, but their example only gives degree 1: https://www.jooq.org/doc/3.9/manual/sql-building/conditional-expressions/in-predicate-degree-n/

This code gives an approximation of what I'm looking for, but I can't get the right type/data for referenceOrderIdLineNumbers nor can I get the right SQL generated by jOOQ.

Collection<Row2<String, Integer>> referenceOrderIdLineNumbers = ...
List<Object[]> rows = dsl.select(... , field("count(TABLE3)", Integer.class )
  .from(Tables.TABLE1)
  .join(Tables.TABLE2).on(Tables.TABLE2.PK1.eq(Tables.TABLE1.PK1))
  .join(Tables.TABLE3).on(Tables.TABLE3.PK2.eq(Tables.TABLE2.PK2))
  .where(
    row(Tables.TABLE1.FIELD1, Tables.TABLE2.FIELD2) // <-- what to 
    .in(referenceOrderIdLineNumbers)                // <-- do here??
  )
  .groupBy(...)
  .fetch();

Answer 1

This is working as intended for me. You might try having jOOQ log the SQL its generating for you and try running said SQL against your database directly.

References:

• https://www.jooq.org/doc/3.9/manual/sql-execution/logging/
• https://www.jooq.org/doc/3.9/manual/sql-building/conditional-expressions/in-predicate-degree-n/

Collection<Row2<String, Integer>> field1Field2Collection = new LinkedList<>();
field1Field2Collection.add(row("1", 1));
field1Field2Collection.add(row("2", 2));
field1Field2Collection.add(row("3", 3));

Result<Record2<String, Integer>> field1Field2Results = dsl
        .select(Tables.TABLE1.FIELD1, Tables.TABLE2.FIELD2)
        .from(Tables.TABLE1)
        .join(Tables.TABLE2).on(Tables.TABLE2.PK1.eq(Tables.TABLE1.PK1))
        .where(row(Tables.TABLE1.FIELD1, Tables.TABLE2.FIELD2).in(field1Field2Collection))
        .fetch();