oracle 定义临时变量，并使用分支判断

declare tempCount int;
  tempID  VARCHAR2(8);
begin
    select count(*) into tempCount from CUSTOMER_PROFILE where id=:CUSTOMER_ID;
    
    if tempCount>0 then
        
        update CUSTOMER_PROFILE set name=:CUSTOMER_NAME,address=:CUSTOMER_ADDRESS,phone=:CUSTOMER_PHONE,description=:CUSTOMER_DESCRIPTION,update_user_id=:USER_ID,update_date=sysdate;
    else 
        
         begin
              select  ID into tempID from ID_POOL where status=0 and rownum=1;
              insert into CUSTOMER_PROFILE(id,name,address,phone,description,create_user_id) values(tempID,:CUSTOMER_NAME,:CUSTOMER_ADDRESS,:CUSTOMER_PHONE,:CUSTOMER_DESCRIPTION,:USER_ID);
              update ID_POOL set STATUS=1 where id=tempID;
              
          end;
    end if;
end;     

（编辑：李大同）

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