Re: Stupid question: concatenating strings

On Wed, 18 Oct 2000, Tom Lane wrote:

>> I can't figure out how to do this.
>>
>> I want to do the following
>>
>> UPDATE newlink SET newfrom = substr(oldfrom,0,1) + '-' + substr(oldfrom,1)

> The string concatenation operator in SQL is ||, not +.
>
> Also, substr's start-index argument counts from 1 not 0.  Otherwise
> you've got the right idea...
>
>             regards, tom lane


Tom,

The || operator needs parentheses to concat > 2 items in Pg 6.3.2.
Has this been fixed in subsequent versions?

If not, for Justin - this is what I do to concat more than
two items...

select (staff_fname || staff_lname) || ('-' || staff_ssn)
as "Social Security"
from personnel
where staff_id = 1000;

Cheers,
Tom Good

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