postgresql - subarray of bigint[] in posgresql -


i'm trying n first elements , n last elements of bigint[] in postgresql

in link int[] not bigint[] http://www.postgresql.org/docs/9.1/static/intarray.html

so, this:

delchain := subarray(usr.chain, 1, (schain - mchain));

gives me error:

function subarray(bigint[], integer) not exist

is possible avoid error?


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