pgsql 建数据库注意事项

在用navacat建好表之后，需要主键自增的时候，把字段建好之后，可以使用下面的sql来建立主键自增。

ALTER TABLE "public"."chart_sql" ADD PRIMARY KEY ("id");
DROP SEQUENCE IF EXISTS "chart_sql_id_seq";
CREATE SEQUENCE chart_sql_id_seq
START WITH 1
INCREMENT BY 1
NO MINVALUE
NO MAXVALUE
CACHE 1;
alter table chart_sql alter column id set default nextval('chart_sql_id_seq');

建好之后，导出sql 给别人安装运行sql会报错，这时候需要

DROP SEQUENCE IF EXISTS "chart_sql_id_seq";
CREATE SEQUENCE "chart_sql_id_seq" START WITH 1 INCREMENT BY 1 NO MINVALUE NO MAXVALUE CACHE 1;

先定义自增名称，导出sql如下：

DROP SEQUENCE IF EXISTS "chart_sql_id_seq";
CREATE SEQUENCE "chart_sql_id_seq" START WITH 1 INCREMENT BY 1 NO MINVALUE NO MAXVALUE CACHE 1;

DROP TABLE IF EXISTS "public"."chart_sql";
CREATE TABLE "public"."chart_sql" (
"id" int4 DEFAULT nextval('chart_sql_id_seq'::regclass) NOT NULL,
"code" varchar(50) COLLATE "default",
"name" varchar(50) COLLATE "default",
"code_sql" text COLLATE "default",
"create_time" timestamp(6),
"create_by" varchar(30) COLLATE "default",
"update_time" timestamp(6),
"update_by" varchar(30) COLLATE "default"
)
WITH (OIDS=FALSE);

ALTER TABLE "public"."chart_sql" ADD PRIMARY KEY ("id");

这样别人运行sql就不会出错，建成的表就是主键自增的了。。。