Обсуждение: Removing terminal period from varchar string in table column

I want to remove the terminal period '.' from the varchar strings in the
'company_name' column in all rows with that period in the companies table.

I've looked at trim(), translate(), "substr(company_name 1,
length(compan_name) - 1)", and a couple of other functions and am unsure how
best to do this without corrupting the database table.

Advice needed.

TIA,

Rich

On 7/15/25 11:30, Rich Shepard wrote:

I want to remove the terminal period '.' from the varchar strings in the
'company_name' column in all rows with that period in the companies table.

I've looked at trim(), translate(), "substr(company_name 1,
length(compan_name) - 1)", and a couple of other functions and am unsure how
best to do this without corrupting the database table.

Advice needed.

TIA,

Rich

How about

test:

    select company_name, replace(company_name,'.','') from companies;

update:

    update companies set company_name = replace(company_name,'.','') where company_name like '%.';

?

Jeff

On Tue, 15 Jul 2025, Thom Brown wrote:

> There are various options, but perhaps just use rtrim.
> rtrim(company_name, '.')

Thom,

I looked at rtrim() but didn't see where to specify the table name. Would it
be `select * from table companies rtrim(company_name, '.')'?

Thanks,

Rich

On Tue, 15 Jul 2025, Jeff Ross wrote:

> How about
>
> test:
>     select company_name, replace(company_name,'.','') from companies;
>
> update:
>     update companies set company_name = replace(company_name,'.','') where 
> company_name like '%.';

Jeff,

These contain the table and column names I didn't see in web page examples.
Using update looks better to me.

Many thanks,

Rich

On Tue, 15 Jul 2025, Thom Brown wrote:

> UPDATE companies
> SET company_name = rtrim(company_name, '.')
> WHERE company_name != rtrim(company_name, '.');

Thom,

That makes sense. The web pages I read assumed I knew to use the UPDATE
command. As this was the first time I needed to clean column content I
didn't assume that update was the appropriate mechanism. Now I do.

Thanks,

Rich