Re: SQL is fetching results BLANK checks but the data has no BLANKS

Поиск
Список
Период
Сортировка
От M Sarwar
Тема Re: SQL is fetching results BLANK checks but the data has no BLANKS
Дата
Msg-id DM4PR19MB5978DBFB23F2A12E591D3A40D32FA@DM4PR19MB5978.namprd19.prod.outlook.com
обсуждение исходный текст
Ответ на Re: SQL is fetching results BLANK checks but the data has no BLANKS  (Erik Wienhold <ewie@ewie.name>)
Ответы Re: SQL is fetching results BLANK checks but the data has no BLANKS
Список pgsql-admin
Erik,
Table has no indexes so far.
Thanks,
Sarwar


From: Erik Wienhold <ewie@ewie.name>
Sent: Wednesday, July 5, 2023 5:25 PM
To: M Sarwar <sarwarmd02@outlook.com>; pgsql-admin@lists.postgresql.org <pgsql-admin@lists.postgresql.org>
Subject: Re: SQL is fetching results BLANK checks but the data has no BLANKS
 
> On 05/07/2023 23:10 CEST M Sarwar <sarwarmd02@outlook.com> wrote:
>
> Data in the database is uploaded using python.
>
> I have tried to test the same results by creating a sample table where I
> inserted some sample data. In my sample test, I do not see any discrepancies.
>
> ------------------------------
> From: M Sarwar <sarwarmd02@outlook.com>
>  Sent: Wednesday, July 5, 2023 5:01 PM
>  To: pgsql-admin@lists.postgresql.org <pgsql-admin@lists.postgresql.org>
>  Subject: SQL is fetching results BLANK checks but the data has no BLANKS
>
> SELECT TEST_NUMBER
>  FROM BRONX.TEST_TEST_DETAILS_ALL_MCM
>  WHERE LEFT(TEST_DESCRIPTION, 1) = ' '
> ;
> The above SQL is fetching lot of data but when I take closer look at the data
> in the table TEST_TEST_DETAILS_ALL_MCM, I see no prefixed BLANKS in the column
> TEST_DESCRIPTION.
>
> test_description character varying(50) COLLATE pg_catalog."default", -- TEST_DESCRIPTION, type
>
> What could be the reason here for fetching the data when I do not have the
> data which has prefixes of BLANK , ‘ ‘.

Is there a functional index on left(test_description, 1) ?  My guess is that
the index is corrupted.  This can be fixed with REINDEX.

--
Erik

В списке pgsql-admin по дате отправления:

Предыдущее
От: Erik Wienhold
Дата:
Сообщение: Re: SQL is fetching results BLANK checks but the data has no BLANKS
Следующее
От: Erik Wienhold
Дата:
Сообщение: Re: SQL is fetching results BLANK checks but the data has no BLANKS