postgres 使用自增id 来自动水平分表

create table if not exists auto_increase_id
(
    id   serial,
    name varchar(10)
);

-- alter table auto_increase_id


drop function if exists func_trigger_auto_increase_id;
create or replace function func_trigger_auto_increase_id()
    returns trigger as
$$
begin
    raise notice 'new_id:%',new.id;
--     insert into auto_increase_id values (new.*);
    return new;
end;
$$
    language plpgsql
    volatile;

create trigger trigger_insert_auto_increase_id
    before insert
    on auto_increase_id
    for each row
execute procedure func_trigger_auto_increase_id();

insert into auto_increase_id (name)
values (generate_series(1,10000));

自动分表的逻辑我没有写,主要是想验证下自增的字段能否在触发器函数中获取

执行结果表名是可以做到的

[2020-07-21 09:49:12] [00000] new_id:20252
[2020-07-21 09:49:12] [00000] new_id:20253
[2020-07-21 09:49:12] [00000] new_id:20254
[2020-07-21 09:49:12] [00000] new_id:20255
[2020-07-21 09:49:12] [00000] new_id:20256
[2020-07-21 09:49:12] [00000] new_id:20257

懂得,原来世界如此简单!