小编Joe*_*Joe的帖子

由于数据量的原因,我需要扩展我们的应用程序数据库.它在PostgreSQL 9.3上.所以,我发现PostgreSQL-XL并且它看起来很棒,但是我很难试图绕过分布式表的限制.通过复制(在每个datanode中复制整个表)来分发它们是完全可以的,但是假设我有两个大的相关表需要沿着数据节点"分片":

CREATE TABLE foos
(
  id bigserial NOT NULL,
  project_id integer NOT NULL,
  template_id integer NOT NULL,
  batch_id integer,
  dataset_id integer NOT NULL,
  name text NOT NULL,
  CONSTRAINT pk_foos PRIMARY KEY (id),
  CONSTRAINT fk_foos_batch_id FOREIGN KEY (batch_id)
      REFERENCES batches (id) MATCH SIMPLE
      ON UPDATE NO ACTION ON DELETE CASCADE,
  CONSTRAINT fk_foos_dataset_id FOREIGN KEY (dataset_id)
      REFERENCES datasets (id) MATCH SIMPLE
      ON UPDATE NO ACTION ON DELETE CASCADE,
  CONSTRAINT fk_foos_project_id FOREIGN KEY (project_id)
      REFERENCES projects (id) MATCH SIMPLE
      ON …