问题描述
当我尝试在PGADMIN4中创建存储过程或存储函数时,出现以下错误。我该如何解决:
第1行:创建或替换过程转移(
创建表的代码:
drop table if exists accounts;
create table accounts (
id int generated by default as identity,name varchar(100) not null,balance dec(15,2) not null,primary key(id)
);
insert into accounts(name,balance) values('Bob',10000);
insert into accounts(name,balance) values('Alice',10000);
create or replace procedure transfer(
sender int,receiver int,amount dec
)
language plpgsql
as $$
begin
-- subtracting the amount from the sender's account
update accounts
set balance = balance - amount
where id = sender;
-- adding the amount to the receiver's account
update accounts
set balance = balance + amount
where id = receiver;
commit;
end;$$
解决方法
仅当您使用9.4版标记问题时,该程序仅在Postgres 11版中可用。
在早期版本中,可以改用void函数。基本上,替换:
create or replace procedure transfer(sender int,receiver int,amount dec)
language plpgsql
as $$
begin
...
end; $$
使用:
create or replace function transfer(sender int,amount dec)
returns void
language plpgsql
as $$
begin
...
end; $$