Re: DOC: fixes multiple errors in alter table doc

> On Mar 6, 2026, at 14:48, Chao Li <li.evan.chao@gmail.com> wrote:
>
>
>
>> On Mar 6, 2026, at 14:40, Fujii Masao <masao.fujii@gmail.com> wrote:
>>
>> On Thu, Mar 5, 2026 at 2:06 PM Chao Li <li.evan.chao@gmail.com> wrote:
>>>> -- alter noexisting table
>>>> ALTER FOREIGN TABLE IF EXISTS doesnt_exist_ft1 ADD COLUMN c4 integer;
>>>> +ALTER FOREIGN TABLE IF EXISTS doesnt_exist_ft1 ADD c5 integer;
>>>> <snip>
>>>> ALTER FOREIGN TABLE IF EXISTS doesnt_exist_ft1 DROP COLUMN IF EXISTS no_column;
>>>> +ALTER FOREIGN TABLE IF EXISTS doesnt_exist_ft1 DROP IF EXISTS no_column;
>>>>
>>>> Regarding 0002 patch, could you explain the reason for adding these
>>>> two additional tests? I was just curious why because other four tests that
>>>> the patch adds seem sufficient.
>>>
>>> They are combinations of “IF [NOT] EXISTS” and omitting “COLUMN", I added them just for better coverage.
>>
>> Which table-level or column-level "IF [NOT] EXISTS" are you referring to?
>> If you mean the combination of column-level "IF [NOT] EXISTS" with
>> "COLUMN" omitted, then the first test above should be "ALTER FOREIGN TABLE
>> IF EXISTS doesnt_exist_ft1 ADD IF NOT EXISTS c5 integer"?
>>
>> Regards,
>>
>> --
>> Fujii Masao
>
> I meant to say column-level. Yes, the first test seems not needed. My brain was buffering! I will revisit the test
casesand make an update later. 
>
> Best regards,
> --
> Chao Li (Evan)
> HighGo Software Co., Ltd.
> https://www.highgo.com/
>

PFA v6. The two test cases on table level “IF EXISTS” are removed. So, now the patch adds totally 4 test cases: 2 for
omittingCOLUMN, 2 for combinations of column level “IF [NOT] EXISTS” and omitting COUMN. 

Best regards,
--
Chao Li (Evan)
HighGo Software Co., Ltd.
https://www.highgo.com/