Re: Array Contained By Array Question

Merlin,

Thanks so much for the reply.  I was suspecting that this was the way to
get this done.

Thanks again for the help!

Arthur

On 6/10/2011 10:31 AM, Merlin Moncure wrote:
> On Fri, Jun 10, 2011 at 11:00 AM, Arthur M. Kang<arthurmkang@gmail.com>  wrote:
>> How can I search a multidimensional array for an EXACT "subarray" match?
>>
>> The following produces true when I want it to produce false.  Obviously, I
>> would only want it to produce true for ARRAY[1,2], ARRAY[3,4], or
>> ARRAY[5,6].
>>
>> SELECT ARRAY[ARRAY[1,2], ARRAY[3,4], ARRAY[5,6]] @>  ARRAY[ARRAY[1,6]];
>>
>> Any help is greatly appreciated.
> create or replace function slice_in_array(needle anyarray, haystack
> anyarray) returns bool as
> $$
>    select $1 in (select $2[v:v] from generate_series(1, array_upper($2, 1)) v);
> $$ language sql immutable;
>
> select slice_in_array(array[array[1,2]], ARRAY[ARRAY[1,2], ARRAY[3,4],
> ARRAY[5,6]]);
>
> -- or --
>
> create or replace function slice_in_array(needle anyarray, haystack
> anyarray) returns bool as
> $$
>    select array[$1] in (select $2[v:v] from generate_series(1,
> array_upper($2, 1)) v);
> $$ language sql immutable;
>
> select slice_in_array(ARRAY[1,2], ARRAY[ARRAY[1,2], ARRAY[3,4], ARRAY[5,6]]);
>
> (not really sure what the deal is with the operator)
>
> merlin