我在PLS-00103上遇到错误：遇到符号“IS”

Question

create or replace procedure seqn (sname IN seq.seqname%type , 

startv IN seq.startval%type , 

incby IN seq.incrementby%type , 

maxi IN seq.maxilimit%type); 

    IS 
s_count integer ; 

    begin 
    select count(*) 
    into s_count 
    from sequence; 
    where seqname := sname ; 
if s_count := 0 
then 
    insert into seq 
    values(sname,startv,incby,maxi); 
end if; 

    end seqn ; 
    /

Answer 1

我在您的程序中发现了四个错误。

首先，从下面的线的端卸下两个分号：

maxi IN seq.maxilimit%type); 

 from sequence; 

其次，不使用:=在以下两行比较值，使用=代替。

 where seqname := sname ; 
if s_count := 0