Re: how to key/value iterate in stored function

I tried hstore with no luck.

How do I initialize the array?

How do I loop through each key/value pair in a stored function to
retrieve the key and value for each item in the list?

I need a list of key value pairs. Any options there?

J.V.

On 10/12/2011 8:51 AM, Merlin Moncure wrote:
> On Wed, Oct 12, 2011 at 8:46 AM, J.V.<jvsrvcs(at)gmail(dot)com> wrote:
>> I want to create a variable that is an array or list of key/value pairs.
>>
>> The key would be a table name and the value would be a sql statement or a
>> value or list of values for which I could extract to create a sql statement
>> and execute.
>>
>> I have tried experimenting with various arrays, but there is no clear
>> example or documentation. The key and the value would be text.
>>
>> I want to iterate over the entire array (or list), so would need an example
>> on that or some pointers there, if there is help.
> use thee the hstore!
>
> postgres=# select * from each('a=>1,b=>2');
> key | value
> -----+-------
> a | 1
> b | 2
> (2 rows)
>
> (if you do stick with arrays, use unnest() -- it can be built for
> older versions if you don't have it).
>
> merlin
>