How can I switch mindsets from ORMs or query builders to projects like this?

[frederikhors]

I'm really fascinated by this idea you had to generate Rust code from sql files. Great!

What I can't understand after years of using "Query builders" and ORMs is how to get the same queries I'm getting using this pattern:

pub struct PlayerFilter {
    pub id: Option<IdFilter>,
    pub created_at: Option<DateTimeFilter>,
    pub created_by: Option<IdFilter>,
    pub state: Option<State>,
    pub number: Option<NumberFilter<i64>>,
    pub loading_date: Option<DateTimeFilter>,
    pub is_ok_playing_with_others: Option<BoolFilter>,
    pub for_teams: Option<BoolFilter>,
    pub weekend: Option<BoolFilter>,
    pub client_ref: Option<StringFilter>,
    pub amount: Option<DecimalFilter>,
    pub amount_with_surplus: Option<DecimalFilter>,
    pub tax_amount: Option<DecimalFilter>,
    pub profile_id: Option<IdFilter>,
    pub sale_id: Option<IdFilter>,
    pub player_type_id: Option<IdFilter>,
    pub and: Vec<Self>,
    pub or: Vec<Self>,
    pub not: Option<Box<Self>>,
    pub with_team: Option<TeamFilter>,
    pub with_coach: Option<CoachFilter>,
    // and many more
}

impl PlayerFilter {
    pub fn to_sql<'a>(
        &'a self,
        mut query: QueryBuilder<'a, sqlx::Postgres>,
    ) -> QueryBuilder<'a, sqlx::Postgres> {
        if let Some(id) = &self.id {
            id.to_sql("id", query);
        }

        if let Some(created_at) = &self.created_at {
            created_at.to_sql("created_at", query);
        }

        if let Some(created_by) = &self.created_by {
            created_by.to_sql("created_by", query);
        }

        // and many more
    }
}

this creates a big and complex and dynamic CTE (Common Table Expressions) query like this:

SELECT
  "player".*
FROM
  "player"
WHERE
  (
    "id" IN (SELECT "player_id" FROM "client_ref" WHERE "some_id" = $1)
    OR "id" IN (SELECT "player_id" FROM "skill" WHERE "some_id" = $2)
  ) AND (/* some other filter here */)
PLAYER BY
  "player".created_at DESC
  LIMIT 50 OFFSET 3

How can I switch from sqlx::QueryBuilder to clorinde?

I can't always know in advance which filters I'll need.