Re: How to INSERT empty line into SEQUENTIAL table from PHP

It doesn't work like this:

    INSERT INTO page_input (id, page, text_en, text_fr, text_es, text_ar)
VALUES (NULL, '', '', '', '', '')

    --> ERROR: null value in column "id" violates not-null constraint

nor like this:

    INSERT INTO page_input (page, text_en, text_fr, text_es, text_ar)
VALUES ('', '', '', '', '')

    --> ERROR: duplicate key value violates unique constraint "id_unique"

nor like this:

    INSERT INTO page_input (id, page, text_en, text_fr, text_es, text_ar)
VALUES (nextval('page_input_id_seq'::regclass), '', '', '', '', '')

    --> ERROR: duplicate key value violates unique constraint "id_unique"



On Jun 16, 2008, at 8:54 AM, Julius Tuskenis wrote:

> Hi, Stefan.
>
> your second example should work for you.
> INSERT INTO table_xx (field2, field3, field4) VALUES ('', '', '');
> (keeping in mind, that your ID column is of type serial or has
> DEFAULT NEXTVAL('some_sequence') ).
> You can also insert values yourself:
> INSERT INTO table_xx (ID, field2, field3, field4) VALUES
> (NEXTVAL('some_sequence'), '', '', '');
>
> Julius Tuskenis
>
>
>
> Stefan Schwarzer rašė:
>> Hi,
>>
>> rahter dump question, I guess....
>>
>> But I have a table with a sequential index field, into which I
>> would like to add from time to time another line (via webbrowser),
>> which in turn, stays first empty, before it's being filled in later
>> (via webbrowser).
>>
>> Because the ID field is sequential and indexed, I can't use
>>
>>    INSERT INTO table_xx (ID, field2, field3, field4) VALUES ('',
>> '', '', '');
>>
>> neither (skipping ID because it should be filled in automatically):
>>
>>    INSERT INTO table_xx (field2, field3, field4) VALUES ('', '', '');
>>
>> How am I supposed to do it?
>>
>> Thanks for any hints,
>>
>> Stef
>>
>>