Created
April 26, 2024 02:00
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CREATE OR REPLACE FUNCTION insta5.next_id(OUT result bigint) AS $$ | |
DECLARE | |
our_epoch bigint := 1314220021721; | |
seq_id bigint; | |
now_millis bigint; | |
shard_id int := 5; | |
BEGIN | |
SELECT nextval('insta5.table_id_seq') %% 1024 INTO seq_id; | |
SELECT FLOOR(EXTRACT(EPOCH FROM clock_timestamp()) * 1000) INTO now_millis; | |
result := (now_millis - our_epoch) << 23; | |
result := result | (shard_id <<10); | |
result := result | (seq_id); | |
END; | |
$$ LANGUAGE PLPGSQL; |
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CREATE TABLE insta5.our_table (
"id" bigint NOT NULL DEFAULT insta5.next_id(),
...rest of table schema...
)