[Bug]: Trino dialect doesn't handle array functions that use an arrow "->".

[ademille]

What happened?

When formatting valid Trino SQL that has an ascii arrow "->", the formatter will insert a space, making the SQL invalid.
Source:

SELECT array_sort(ARRAY[3, 2, 5, 1, 2], (x, y) -> IF(x < y, 1, IF(x = y, 0, -1)));

Formatted with Trino dialect:

SELECT
    array_sort(ARRAY[3, 2, 5, 1, 2], (X, Y) - > IF (x < y, 1, IF (x = y, 0, - 1)));

Notice that the arrow now has a space between the '-' and '>' characters.

Arrows in Trino SQL should not be modified.

Version

No response

Checked in Playground

• I have checked this bug in the playground.

[ademille]

The Athena dialect handles the "->" correctly. Since "Athena" is just an AWS version of Trino, is there really a need for both dialects?

[benfdking]

Hey,

I just fixed the formatting for this. It still doesn't parse the query correctly, but it does format it now correctly. Just pushing a new build.

[ademille]

Great. Thanks!