Aaron Bono wrote:
On 7/7/06, *Rodrigo De Leon* <[EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]>> wrote:

    On 7/7/06, T E Schmitz <[EMAIL PROTECTED]
    <mailto:[EMAIL PROTECTED]>> wrote:
     > But that takes me to the next problem:
     >
     > For the sake of the example I simplified the regular pattern.
     > In reality, BASE_NAME might be:
     >
     > 28mm
     > 28-70mm
     >
     > So the reg. expr. requires brackets:
     >
     > substring (NAME, '^(\\d+(-\\d+)?mm)' ) as BASE_NAME
     >
     > Actually, the pattern is more complex than that and I cannot see
    how I
     > can express it without brackets.

    Maybe:

    select
    substring ('150mm LD AD Asp XR Macro', '^[\\d-]*mm' ) as BASE_NAME
    , substring('150mm LD AD Asp XR Macro','^[\\d-]*mm (.*)$') as SUFFIX;

    select
    substring ('28-70mm LD AD Asp XR Macro', '^[\\d-]*mm' ) as BASE_NAME
    , substring('28-70mm LD AD Asp XR Macro','^[\\d-]*mm (.*)$') as SUFFIX;

    etc...

    Regards,

    Rodrigo


Is there a reason this column wasn't separated into two different columns? Or perhaps into a child table if there could be more than one XXXmm value in the field?

Just curious.

You're absolutely right (see my other posting):

what was entered:

MODEL.NAME "150mm F4 E" TYPE.NAME -
MODEL.NAME "150mm F4 PE" TYPE.NAME -

what should've been entered:
MODEL.NAME "150mm F4"
TYPE.NAME "PE"
TYPE.NAME "E"
both referencing the same MODEL

--


Regards,

Tarlika Elisabeth Schmitz

---------------------------(end of broadcast)---------------------------
TIP 3: Have you checked our extensive FAQ?

              http://www.postgresql.org/docs/faq

Reply via email to