Insert from several temporary tables - postgresql

Question

I want to rewrite the following query using jooq:
with first_temp as (
select a.id as lie_id
from first_table a
where a.some_Field = 100160
), second_temp as (
select b.id as ben_id
from second_table b
where b.email = 'some.email#gmail.com'
) insert into third_table (first_table_id, second_table_id)
select a.lie_id, b.ben_id from first_temp a, second_temp b;
I was trying something like the following:
DriverManager.getConnection(url, login, password).use {
val create = DSL.using(it, SQLDialect.POSTGRES)
create.with("first_temp").`as`(create.select(FIRST_TABLE.ID.`as`("lie_id")))
.with("second_temp").`as`(create.select(SECOND_TABLE.ID.`as`("ben_id")))
.insertInto(THIRD_TABLE, THIRD_TABLE.FIRST_TABLE_ID, THIRD_TABLE.SECOND_TABLE_ID)
.select(create.select().from("first_temp", "second_temp"), create.select().from("second_temp")))
}
But without success.

Answer 1

Your fixed query
// You forgot FROM and WHERE clauses in your CTEs!
create.with("first_temp").`as`(
create.select(FIRST_TABLE.ID.`as`("lie_id"))
.from(FIRST_TABLE)
.where(FIRST_TABLE.SOME_FIELD.eq(100160)))
.with("second_temp").`as`(
create.select(SECOND_TABLE.ID.`as`("ben_id"))
.from(SECOND_TABLE)
.where(SECOND_TABLE.EMAIL.eq("some.email#gmail.com")))
.insertInto(THIRD_TABLE, THIRD_TABLE.FIRST_TABLE_ID, THIRD_TABLE.SECOND_TABLE_ID)
// You had too many queries in this part of the statement, and
// didn't project the two columns you were interested int
.select(create.select(
field(name("first_temp", "lie_id")),
field(name("second_temp", "ben_id")))
.from("first_temp", "second_temp"))
// Don't forget this ;-)
.execute();
But frankly, why even use CTE at all? Your query would be much simpler like this, both in SQL and in jOOQ (assuming that you really want this cartesian product):
Better SQL Version
insert into third_table (first_table_id, second_table_id)
select a.id, b.id
from first_table a, second_table b
where a.some_field = 100160
and b.email = 'some.email#gmail.com';
Better jOOQ Version
create.insertInto(THIRD_TABLE, THIRD_TABLE.FIRST_TABLE_ID, THIRD_TABLE.SECOND_TABLE_ID)
.select(create.select(FIRST_TABLE.ID, SECOND_TABLE.ID)
.from(FIRST_TABLE, SECOND_TABLE)
.where(FIRST_TABLE.SOME_FIELD.eq(100160))
.and(SECOND_TABLE.EMAIL.eq("some_email#gmail.com")))
.execute();