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From:Lamp Lists Date:December 17 2008 9:09pm
Subject:Re: need help with query...
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________________________________
From: Andy Shellam <andy-lists@stripped>
To: Lamp Lists <lamp.lists@stripped>
Cc: mysql@stripped
Sent: Wednesday, December 17, 2008 2:48:31 PM
Subject: Re: need help with query...

Hi,

> 
> Hi Andy,
> the reason I can't use this because fields (columns) in select statement
> (p.first_name, p.last_name,...) are actually dynamically created. In my project different
> client will select different fields to be shown. 99% will select first_name, and
> last_name, but some don't care about date_registered, some will need more org data...
> 
> actually, it will be more this way:
> 
> SELECT {$selected_fields} FROM people p, organization o. addresses a
> WHERE ...
> 
> where
> $selected_fields = "p.first_name, p.last_name, o.org_name"
> or
> $selected_fields = "p.first_name, p.last_name, o.org_name, a.address, a.city,
> a.state, a.zip"
> or
> $selected_fields = "o.org_name, a.address, a.city, a.state, a.zip"

So just tag "AS table_field_name" to each field when you're building your list of
$selected_fields - e.g.

$selected_fields = "p.first_name AS person_first_name, p.last_name AS person_last_name,
o.org_name AS organization_org_name"

You don't have to use the full table name either - for example in the following statement,
you would then access the data using $result['p']['first_name'];

$selected_fields = "p.first_name AS p_first_name, p.last_name AS p_last_name, o.org_name
AS o_org_name"

This approach is actually easier if you're creating the query dynamically, because you
don't have to manually type a load of "AS xxx" statements after every field.

I've recently done something similar in one of my applications to wrap date/time fields in
either FROM_UNIXTIME() or UNIX_TIMESTAMP() functions.

Andy




Yup! That'll do it!

Thanks Andy
;-)



      
Thread
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  • Re: MySQL 5.0.67 on SMPDan Nelson16 Dec
    • RE: MySQL 5.0.67 on SMPxufeng17 Dec
  • Re: MySQL 5.0.67 on SMPewen fortune16 Dec
  • need help with query...Lamp Lists17 Dec
    • Re: need help with query...Jason Pruim17 Dec
      • Re: need help with query...Andy Shellam17 Dec
        • RE: need help with query...Jerry Schwartz17 Dec
          • Re: need help with query...Andy Shellam17 Dec
    • RE: need help with query...Jerry Schwartz17 Dec
  • Re: need help with query...Lamp Lists17 Dec
    • Re: need help with query...Andy Shellam17 Dec
  • Re: need help with query...Lamp Lists17 Dec
RE: MySQL 5.0.67 on SMPxufeng16 Dec
  • Re: MySQL 5.0.67 on SMPJoerg Bruehe16 Dec