Sorry to repeat myself, but I've gotten a couple improperly formed
digests which my mail reader couldn't decipher, and I'm afraid I
missed a response.
Am I supposed to be able to use the result of selecting an array as
the subquery for an 'in' clause? It seems very natural, and would
be mighty convenient.
For example:
create table testme1 (
key1 int2,
data1 int2[3]
);
create table testme2 (
key2 int2,
data2 int2
);
insert into testme1 values(1,'{1,2,3}');
insert into testme1 values(2,'{4,5,6}');
insert into testme2 values(10,5);
select key2 from testme2 where data2 in (select data1 from testme1
where key1 = 2);
Generates the following error
ERROR: Unable to identify an operator '=' for types 'int2' and '_int2'
You will have to retype this query using an explicit cast
Although I could name the array elements individually, this would be
most useful when the length of the array is variable.
I'd greatly appreciate any tips, pointers, or insight.
Thanks,
Dave
