Regression of interval parsing

[alippai]

select sum(x) over (partition by x order by y range between interval '1 days')

is parsed into:

SELECT
  SUM("x") OVER (PARTITION BY "x" ORDER BY "y" range BETWEEN INTERVAL '1' days AND CURRENT ROW)

instead of the previous (correct):

SELECT
  SUM("x") OVER (PARTITION BY "x" ORDER BY "y" range BETWEEN INTERVAL '1 days' AND CURRENT ROW)

Note the days

[tobymao]

what dialect is this an issue for?

[alippai]

I see #1410 now. I'm using the postgres dialect, I was checking for changes when upgrading sqlglot and noticed this odd syntax.

[tobymao]

are you sure this is valid postgres? i can't get it to parse in postgres 13

[alippai]

I use a postgresql derivation, it doesn't really matter.
Better example:

select interval '1 hour'

vs

select interval '1 hours'

The first is parsed correctly, the second gives:

select interval '1' hours

Which is not valid. Only:

select interval '1' hour

is valid postgresql syntax

[alippai]

(The first means select interval '1' as "hours")

[alippai]

Thanks!

[tobymao]

thanks for the report and the quick response to my questions!