| From: | Domingo Alvarez Duarte <mingodad(at)gmail(dot)com> | 
|---|---|
| To: | pgsql-bugs(at)lists(dot)postgresql(dot)org | 
| Subject: | Re: BUG #17109: Fail to evaluate boolean expression properly | 
| Date: | 2021-07-15 10:01:31 | 
| Message-ID: | 88595360-64b9-1a34-743e-d505dffee030@gmail.com | 
| Views: | Whole Thread | Raw Message | Download mbox | Resend email | 
| Thread: | |
| Lists: | pgsql-bugs | 
It seems that I fired the trigger to early, although the output of that 
website (https://extendsclass.com/postgresql-online.html) does shows 
wrong result when executing the query on other places with different 
PostgreSQL version the output is the expected one:
psql  template1
psql (13.3)
Type "help" for help.
template1=# select /*NOT*/ 1 BETWEEN -2 and 2, NOT (1 BETWEEN -2 and 2), 
(/*NOT*/ 1) BETWEEN -2 and 2
template1-# ;
  ?column? | ?column? | ?column?
----------+----------+----------
  t        | f        | t
(1 row)
On 15/7/21 11:38, PG Bug reporting form wrote:
> The following bug has been logged on the website:
>
> Bug reference:      17109
> Logged by:          Domingo Alvarez Duarte
> Email address:      mingodad(at)gmail(dot)com
> PostgreSQL version: 11.10
> Operating system:   Online at https://extendsclass.com/postgresql-onli
> Description:
>
> When proposing a change to
> https://github.com/facebookincubator/CG-SQL/pull/62 people there found
> several problems on their project and one of the related to how
> parse/evaluate expressions around "BETWEEN" keyword and they created a
> simple test case to check it (adapted by me):
>
> ====
> select /*NOT*/ 1 BETWEEN -2 and 2, NOT (1 BETWEEN -2 and 2), (/*NOT*/ 1)
> BETWEEN -2 and 2
> ====
>
> Here is the output of PostgreSQL where the second column is not negated (if
> column 1 expression is true then "NOT" that expression should return false
> ):
> ====
> ?column? | ?column? | ?column?
> -- | -- | --
> true | true | true
> ====
>
> Here is the output of sqlite3:
> ====
> sqlite3 < "test-between.sql"
> 1|0|1
> ====
>
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