Struct IrFunctionCall 

pub struct IrFunctionCall {
    pub return_pg_type: Option<String>,
    pub schema: Option<String>,
    pub name: String,
    pub args: Vec<IrExpr>,
    pub sql_template: Option<String>,
}

Fields

return_pg_type: Option<String>

What the resolved overload returns, when that is a nameable scalar.

name alone cannot answer this: a SqlBuiltin overload is rewritten to its PostgreSQL name here (str_lower becomes lower), so looking the result back up in the stdlib registry by name finds nothing and silently types the call as unknown. Recording it at resolution time — the one place the chosen FnDescriptor/FunctionDescriptor is in hand — is what lets infer_ir_type see through a call at all, which in turn is what lets a nested call (str_lower(str_trim(x))) resolve its outer overload by type rather than by falling back to the first one registered. None for a synthesised call the compiler builds itself and for a polymorphic result (max, min, sum) that is typed from its argument instead.

schema: Option<String>

name: String

args: Vec<IrExpr>

sql_template: Option<String>

Set for SqlExpression impls: raw SQL template where $1, $2, … are replaced with the emitted arg expressions.

Trait Implementations

impl Clone for IrFunctionCall

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for IrFunctionCall

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.