如何使用postgres

如何解决如何使用postgres

在项目中，将有超过1亿用户，我想按行和列（复合）对它进行分区，并在我们的行数超过500万（任何应用程序ID为5数百万的用户）。并每月自动创建一个分区表。

我出于这些目的使用了Postgresql

有什么比pgslice和pgparty更好的宝石

我尝试了很多宝石，但是它们都不适合我。

CREATE TABLE public.admins (
id int not null,name varchar,firstname varchar,app_id int not null,created_at date not null
) PARTITION BY RANGE(created_at);

CREATE INDEX ON admins(created_at); 

这是表格的Postgres代码

CREATE OR REPLACE FUNCTION new_partition_creator() RETURNS trigger AS 
$BODY$
DECLARE
  partition_date TEXT;
  partition TEXT;
  partition_day int;
  startdate date;
  enddate date;
BEGIN
  partition_day := to_char(NEW.logdate,'DD');
  partition_date := to_char(NEW.logdate,'YYYY_MM');

     IF partition_day < 15 THEN
  partition := TG_RELNAME || '_' || partition_date || '_p1';
  startdate := to_char(NEW.logdate,'YYYY-MM-01');
  enddate := date_trunc('MONTH',NEW.logdate) + INTERVAL '1 MONTH - 1 day';
  ELSE
  partition := TG_RELNAME || '_' || partition_date || '_p2';
  startdate := to_char(NEW.logdate,'YYYY-MM-15');
  enddate := date_trunc('MONTH',NEW.logdate) + INTERVAL '1 MONTH - 1 day';
  END IF;
  
  IF NOT EXISTS(SELECT relname FROM pg_class WHERE relname=partition) THEN
    RAISE NOTICE 'A partition has been created %',partition;
    EXECUTE 'CREATE TABLE ' || partition || ' ( CHECK ( logdate >= DATE ''' || startdate || '''  AND logdate <=  DATE ''' ||  enddate || ''' )) INHERITS (' || TG_RELNAME || ');';
    EXECUTE 'CREATE INDEX ' || partition || '_logdate ON '  || partition || '(logdate)';
    EXECUTE 'ALTER TABLE ' || partition || ' add primary key(city_id);';       
    END IF;
    EXECUTE 'INSERT INTO ' || partition || ' SELECT(' || TG_RELNAME || ' ' || quote_literal(NEW) || ').* RETURNING city_id;';
  RETURN NULL;
END;
$BODY$
LANGUAGE plpgsql VOLATILE
COST 100;

这是postgres中的代码示例，但所有这些都方便我自动获得