Function translate_join

prqlc/prqlc/src/sql/gen_query.rs:406–424

(
    (side, with, filter): (JoinSide, RelationExpr, Expr),
    ctx: &mut Context,
)

}

fn translate_join(
    (side, with, filter): (JoinSide, RelationExpr, Expr),
    ctx: &mut Context,
) -> Result<Join> {
    let relation = translate_relation_expr(with, ctx)?;

    let constraint = JoinConstraint::On(translate_expr(filter, ctx)?.into_ast());

    Ok(Join {
        relation,
        join_operator: match side {
            JoinSide::Inner => JoinOperator::Inner(constraint),
            JoinSide::Left => JoinOperator::LeftOuter(constraint),
            JoinSide::Right => JoinOperator::RightOuter(constraint),
            JoinSide::Full => JoinOperator::FullOuter(constraint),
        },
        global: false,
    })
}

fn translate_cte(cte: Cte, ctx: &mut Context) -> Result<(sql_ast::Cte, bool)> {
    let decl = ctx.anchor.lookup_table_decl(&cte.tid).unwrap();