select(p for p in P if (v1 < p.field < v2)) does not work

it raises: NotImplementedError: Expression is too complex to decompile, try to pass query as string, e.g. select(“x for x in Something”)

First, I thought that Pony will emit BETWEEN operator. But instead, exception raised.

As I think, Pony should use two (or more) comparison operator instead of BETWEEN, because:

http://www.w3schools.com/sql/sql_between.asp :

Notice that the BETWEEN operator can produce different result in different databases!
In some databases, BETWEEN selects fields that are between and excluding the test values.
In other databases, BETWEEN selects fields that are between and including the test values.
And in other databases, BETWEEN selects fields between the test values, including the first test value and excluding the last test value.

Therefore: Check how your database treats the BETWEEN operator!

[jgirardet]

https://docs.ponyorm.com/api_reference.html#between

[Queuecumber]

OK between is a thing but why not support the chained syntax (6 years later)