Function concat_ws

fn concat_ws(sep: &str, vals: impl Row, writer: &mut impl Write)

Concatenates all but the first argument, with separators. The first argument is used as the separator string, and should not be NULL. Other NULL arguments are ignored.

Example

query T
select concat_ws(',', 'abcde', 2, NULL, 22);
----
abcde,2,22

query T
select concat_ws(',', variadic array['abcde', 2, NULL, 22] :: varchar[]);
----
abcde,2,22