postgresql自增id

drop index Ix_product_define_id;
 
drop index Ix_user_umid;
 
drop table invims_product_attention;
 
/*==============================================================*/
/* Table: invims_product_attention */
/*==============================================================*/
create false table invims_product_attention (
product_attention_id SERIAL not null,
user_umid VARCHAR(100) not null,
product_define_id VARCHAR(64) not null,
product_code VARCHAR(24) not null,
date_created TIMESTAMP not null,
date_updated TIMESTAMP not null,
attention_status INT4 not null,
constraint PK_INVIMS_PRODUCT_ATTENTION primary key (product_attention_id)
);
 
comment on table invims_product_attention is
'产品360_关注';
 
comment on column invims_product_attention.product_attention_id is
'关注的id';
 
comment on column invims_product_attention.product_define_id is
'产品的主键id';
 
comment on column invims_product_attention.product_code is
'产品编码';
 
comment on column invims_product_attention.date_created is
'创建时间';
 
comment on column invims_product_attention.date_updated is
'更新时间';
 
comment on column invims_product_attention.attention_status is
'关注状态：0 取消关注 1 已关注';
 
/*==============================================================*/
/* Index: Ix_user_umid */
/*==============================================================*/
create index Ix_user_umid on invims_product_attention (
user_umid
);
 
/*==============================================================*/
/* Index: Ix_product_define_id */
/*==============================================================*/
create index Ix_product_define_id on invims_product_attention (
product_define_id
);

SERIAL  相当于自增。

-- 创建sequence 序列,从1开始每次递增1，param_invims_product_attention_seq 是名称，不能重复
create sequence param_invims_product_attention_seq start with 1 incrementby 1 no minvalue no maxvalue cache;
-- product_attention_id 为自增的列
alter tale public.invims_product_attention alter column product_attention_id set default nextval('param_invims_product_attention_seq')