Hello!
I have created a patch to allow additional commas between columns, and
at the end of the SELECT clause.
Motivation:
Commas of this type are allowed in many programming languages, in some
it is even recommended to use them at the ends of lists or objects. A
new generation of programmers expects a more forgiving language just as
our generation enjoyed LIMIT and the ability to write `select` in lowercase.
Accepted:
SELECT 1,;
SELECT 1,,,,,;
SELECT *, from information_schema.sql_features;
(...) RETURNING a,,b,c,;
Not accepted:
SELECT ,;
SELECT ,1;
SELECT ,,,;
Advantages:
- simplifies the creation and debugging of queries by reducing the most
common syntax error,
- eliminates the need to use the popular `1::int as dummy` at the end of
a SELECT list,
- simplifies query generators,
- the query is still deterministic,
Disadvantages:
- counting of returned columns can be difficult,
- syntax checkers will still report errors,
- probably not SQL standard compliant,
- functionality can be controversial,
I attach the patch along with the tests.
What do you think?
Your opinions are very much welcome!
