Method fold_sql_query

prqlc/prqlc/src/sql/pq/ast.rs:207–216

(&mut self, query: SqlQuery)

pub trait PqFold: PqMapper<RelationExpr, RelationExpr, (), ()> {
    fn fold_sql_query(&mut self, query: SqlQuery) -> Result<SqlQuery> {
        Ok(SqlQuery {
            ctes: query
                .ctes
                .into_iter()
                .map(|c| self.fold_cte(c))
                .try_collect()?,
            main_relation: self.fold_sql_relation(query.main_relation)?,
        })
    }

    fn fold_sql_relation(&mut self, relation: SqlRelation) -> Result<SqlRelation> {
        Ok(match relation {