Re: Bug in concat operator for Char? -- More Info

On July 21, 2004 08:22 am, Tom Lane wrote:
>
> IMHO the bottom line here is that the SQL-spec behavior of type char(N)
> is completely brain-dead. Practically all of the questions in this area
> would go away if people used varchar(N) or text to store their data.
>
> regards, tom lane
For reference sake oracle treats it as follows:

<Dorm> SQL> create table dummy (value char(4));
<Dorm> Table created.
<Dorm> SQL> insert into dummy values ('A');
<Dorm> 1 row created.
<Dorm> SQL> commit;
<Dorm> Commit complete.
<Dorm> SQL> select value||value from dummy;
<Dorm> VALUE||V
<Dorm> --------
<Dorm> A A
<Dorm> SQL> select length(value||value) from dummy;
<Dorm> LENGTH(VALUE||VALUE)
<Dorm> --------------------
<Dorm> 8

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Darcy Buskermolen
Wavefire Technologies Corp.
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