uqa-execution 0.2.1

Volcano physical operators with row-batch pipelines
Documentation 
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//
// Unified Query Algebra
//
// Copyright (c) 2023-2026 Cognica, Inc.
//

//! Compatibility API for `gamma(float8)` and `lgamma(float8)` overload resolution.

use uqa_sql::ast::{ColumnType, FunctionBinding};
use uqa_sql::SQLError;

use super::common::local_routine_name;
use super::{
    fixed_builtin, function_resolution_error, FunctionTypeResolver, ResolvedFunctionOverload,
};

pub type ResolvedGammaOverload = ResolvedFunctionOverload;

#[doc(hidden)]
pub fn resolve_gamma_overload(
    name: &str,
    binding: Option<&FunctionBinding>,
    argument_names: &[Option<String>],
    argument_types: &[Option<ColumnType>],
    resolver: Option<&dyn FunctionTypeResolver>,
) -> Result<ResolvedGammaOverload, SQLError> {
    if !matches!(local_routine_name(name).as_str(), "gamma" | "lgamma") {
        return Err(function_resolution_error(
            "42883",
            name,
            argument_names,
            argument_types,
            "does not exist",
        ));
    }
    fixed_builtin::resolve_overload(
        name,
        binding,
        argument_names,
        argument_types,
        false,
        resolver,
    )
}