Re: Creating table columns from ???
От | Giles Lean |
---|---|
Тема | Re: Creating table columns from ??? |
Дата | |
Msg-id | 3636.991523825@nemeton.com.au обсуждение исходный текст |
Ответ на | Creating table columns from ??? (Chadwick Rolfs <c2304182@webdevel.urban.csuohio.edu>) |
Список | pgsql-novice |
> It seems that there is a missing function that would be very obvious and > one of the first things available: > here's what I want to do: > create table form_two ( <file with names and values> ); > or even better, from perl, or php (I am now using Pg.pm) > create table form_two ( %hash_with_names_and_values ); ... > (doesn't this seem a bit cumbersome?) Well, you have to describe the table once, sometime, but it's source code like the rest of your application -- no need to retype it: $ psql < file If 'file' isn't quite in the 'create table ... ( ... )' syntax you might need to process it first, but that's easy with a suitable scripting language, and you mentioned perl already. :-) In perl (and probably PHP) iterating over a hash building up a string is also easy, so if you are starting from a perl hash something like this works: $query = "create table T ("; for $key (keys %hash) { $query .= "$comma $key $hash{$key}"; $comma = ","; } $query .= ")"; $dbh->do($query); Hope that helps. Regards, Giles
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