Function render_table_function_as 

pub fn render_table_function_as(
    form: TableFunctionForm,
    routine: &RoutineSpec,
) -> String

Spell this table-valued function in a named grammar.

Parameters:

• form: the grammar to spell it in. Custom answers with the PostgreSQL form under a comment naming the grammar;
• routine: the function, in the shape a Custom dialect receives it.