Re: trim() spec

Can someone comment on this?


> Hi,
> 
> Can you tell me trim() spec, please ? (This problem has been 
> discussed in pgsql-jp ML. )
> 
> In trim(trailing 'abc' from '123cbabc') function, 'abc' means
> ~'[abc]'. 
> 
> pgbash> select trim(trailing 'abc' from '123cbabc');
> rtrim
> -----
>   123   <==== it is not "123cb"!!
> (1 row)
> 
> 
> In current trim() function, MULTIBYTE string is broken.
> 
> pgbash> select trim(trailing '0x8842' from '0xB1428842');
>                                 --~~            ~~--~~
> rtrim
> -----
>  0xB1   <==== MULTIBYTE string broken (This is a bug.)
> (1 row)
> 
> 
> If trim(trailing 'abc' from '123cbabc') returns "123cb", current 
> trim() spec is broken. However, the spec that 'abc' means ~'[abc]' 
> is ugly. It seems that this ugly spec isn't used for any kind of
> functions argument and SQL expression except for trim().
> 
> How do you think about the trim() spec ?
> 
> --
> Regards,
> SAKAIDA Masaaki  -- Osaka, Japan
> 
> 
> 


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