postgresql使用觸發器進行分表操作

1.首先準備測試的父表:

2.建立子表:

create table info_2017(

check ( year = '2017' )       
) inherits (info);
create table info_2018(
check ( year = '2018' )       
) inherits (info);

create index info_2017_index on info_2017(year);

create index info_2018_index on info_2018(year);

create or replace function info_trigger()                      

returns trigger as $$  
begin  
if ( new.year = '2017') then  
insert into info_2017 values (new.*);  
elsif (  new.year = '2018' ) then  
insert into info_2018 values (new.*);  
else  
raise exception 'date out of range. fix the tbl_partition_insert_trigger() function!';  
end if;  
return null;  
end;  
$$  
language plpgsql;
create trigger my_info_trigger
before insert on info
for each row execute procedure info_trigger();

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