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eval_scalar_function

uni_query::query::expr_eval

Function eval_scalar_function 

Source 
pub fn eval_scalar_function(
    name: &str,
    args: &[Value],
    custom_fns: Option<&CustomFunctionRegistry>,
) -> Result<Value>
Expand description

Evaluate a built-in scalar function.

This handles functions like COALESCE, NULLIF, SIZE, KEYS, HEAD, TAIL, etc. Functions that require argument evaluation (like COALESCE) take pre-evaluated args.