postgresql数据库下导入导出，删除常用命令

导出出错

create extension "uuid-ossp"

删除所有表

DO $$ DECLARE
    r RECORD;
BEGIN
    FOR r IN (SELECT tablename FROM pg_tables WHERE schemaname = current_schema()) LOOP
        EXECUTE 'DROP TABLE IF EXISTS ' || quote_ident(r.tablename) || ' CASCADE';
    END LOOP;
END $$;

删除所有schema

create or replace function del_schema()
returns  void as $$
-- 定义函数内变量
declare
rec varchar;

begin
-- 遍历所有 schema
for rec in execute 'SELECT nspname  FROM pg_namespace where nspname like ''a%'' ' loop
-- 输出变量值
raise notice ' %' ,rec ;
-- 执行删除 schema
 execute ' drop schema ' || rec;
end loop;
return ;
end
$$
language 'plpgsql';
-- 执行函数
select del_schema();

--------------------华丽分割线

清空表数据

DO $$ DECLARE
    r RECORD;
BEGIN
    FOR r IN (SELECT tablename FROM pg_tables WHERE schemaname = current_schema()) LOOP
        EXECUTE 'DELETE FROM ' || quote_ident(r.tablename);
    END LOOP;
END $$;

连接进入数据库，执行上述存储过程语句