20-genericfuncs.eql

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## Fundamental polymorphic functions


# std::len
# --------

CREATE FUNCTION
std::len(str: std::str) -> std::int64
{
    FROM SQL $$
    SELECT char_length("str")::bigint
    $$;
};


CREATE FUNCTION
std::len(bytes: std::bytes) -> std::int64
{
    FROM SQL $$
    SELECT length("bytes")::bigint
    $$;
};


CREATE FUNCTION
std::len(array: array<anytype>) -> std::int64
{
    FROM SQL $$
    SELECT cardinality("array")::bigint
    $$;
};


# std::sum
# --------

CREATE FUNCTION
std::sum(s: SET OF std::decimal) -> std::decimal
{
    SET initial_value := 0;
    FROM SQL FUNCTION 'sum';
};


CREATE FUNCTION
std::sum(s: SET OF std::int64) -> std::decimal
{
    SET initial_value := 0;
    FROM SQL FUNCTION 'sum';
};


CREATE FUNCTION
std::sum(s: SET OF std::float32) -> std::float32
{
    SET initial_value := 0;
    FROM SQL FUNCTION 'sum';
};


CREATE FUNCTION
std::sum(s: SET OF std::float64) -> std::float64
{
    SET initial_value := 0;
    FROM SQL FUNCTION 'sum';
};


# std::count
# ----------

CREATE FUNCTION
std::count(s: SET OF anytype) -> std::int64
{
    SET initial_value := 0;
    FROM SQL FUNCTION 'count';
};


# std::random
# -----------

CREATE FUNCTION
std::random() -> std::float64
{
    FROM SQL FUNCTION 'random';
};