Sql 带IF的Oracle插入触发器

我正试图触发，但出现了一个错误。 如果有人能向我解释我做错了什么，我将不胜感激。这是我大学期末项目的一部分

CREATE OR REPLACE TRIGGER NewTest_CaseEvent_Trigger
AFTER
INSERT
ON TESTRESULTS
FOR EACH ROW
DECLARE
    NEW_CASEID        Integer;
    RESULT            Char(3);

BEGIN
    RESULT = :new.Result;

    IF :new.PUIID IS IN (SELECT PUIID FROM CASE)THEN
       SELECT CASEID INTO NEW_CASEID 
       FROM CASE
       WHERE PUIID = :new.PUIID;

       INSERT INTO  CASEEVENT
       (CASEEVENTID, CASEID, EventDate, EventComments, MethodOfCommunication, CreatedBy, CreationDate, LastUpdateBy, LastUpdateDate)
           VALUES
           (CASEEVENTID_PK.NextVal, New_CaseID, :new.Date, 'New Test Result Available: include here the test result',
               Null, 'NewTest_CaseEvent_Trigger',SYSDATE,Null,Null);

     ELSEIF RESULT = 'PST' THEN
         INSERT INTO CASE
         (CASEID, PUIID, ActivationDate, ClosingDate, ClosingReason, ExposureTypeID, CaseWorkerID, CreatedBy,CreationDate, LastUpdateBy, LastUpdateDate)
         VALUES
         (CASEID_PK.NextVal, :new.PUIID, SYSDATE,NUll,NUll,NUll,'NewTest_CaseEvent_Trigger',SYSDATE,NUll,NUll);

          INSERT INTO  CASEEVENT
       (CASEEVENTID, CASEID, EventDate, EventComments, MethodOfCommunication, CreatedBy, CreationDate, LastUpdateBy, LastUpdateDate)
           VALUES
           (CASEEVENTID_PK.NextVal, CASEID_PK.CurrVal, :new.Date, 'New Test Result Available: include here the test result',
               Null, 'NewTest_CaseEvent_Trigger',SYSDATE,Null,Null);
     END IF;
END;

---

你犯了一个错误这一事实并没有什么用处。我们怎么能猜出是哪一个呢

无论如何，我试着复习你写的代码；以下是明显错误的地方：

您声明了result char3-当心char数据类型，因为它用空格右键填充值，直到列的总长度。更安全的选择是使用VARCHAR2。但是，如果这些结果真的是长度始终为3个字符的字符串，那么可以使用它。 不是result=：new.result，而是result:=：new.result缺少冒号 如果：new.PUIID在SELECT PUIID FROM CASE中，则-此处有两个错误： 在此上下文中不能使用子查询。首先找出case表中是否存在：new.puiid，这意味着您必须声明额外的局部变量，然后在IF中使用它 即使您可以使用子查询，也不是如果：new.puiid在中，而是如果：new.puiid在不在中 不是elseif而是elseif 插入到箱子里是错误的。您指定了11个要插入的列，但提供了10个值。解决这个问题。 插入案例事件：您正在插入：new.date。日期列名称无效，因为它是为数据类型名称保留的。这似乎通常是错误的，除非在命名列时使用双引号，这同样是错误的，因为在创建对象时应该避免在Oracle中使用双引号 因为我没有你的桌子，我不能测试它。但是，如果将这10个值固定到11列中，下面的代码可能会起作用

create or replace trigger newtest_caseevent_trigger 
  after insert on testresults
  for each row 
declare
  new_caseid  integer;
  result      char(3);           -- beware of CHAR!
  l_puuid     case.puiid%type;   -- newly declared variable
begin 
  result := :new.result;         --  add ":"

  -- subquery can't be used in IF, so you'll have to find whether :new.puiid
  -- exists in that table separately
  select max(puiid) into l_puiid from case where puiid = :new.puiid;

  if l_puiid is not null then
     select caseid 
       into new_caseid 
       from case
       where puiid = :new.puiid;

     insert into caseevent
       (caseeventid, caseid, eventdate, 
        eventcomments, 
        methodofcommunication, createdby, creationdate, 
        lastupdateby, lastupdatedate)
     values
       (caseeventid_pk.nextval, new_caseid, :new.date, 
        'New Test Result Available: include here the test result',
        null, 'NewTest_CaseEvent_Trigger',sysdate,
        null,null);

   elsif result = 'PST' then    -- "elsif", not "elseif"
      -- you are inserting 10 values into 11 columns; that won't work
      insert into case
        (caseid, puiid, activationdate, closingdate, 
         closingreason, exposuretypeid, caseworkerid, createdby,
         creationdate, lastupdateby, lastupdatedate)
      values
        (caseid_pk.nextval, :new.puiid, sysdate, null,
         null, null, 'NewTest_CaseEvent_Trigger', sysdate,
         null, null);

      insert into caseevent
        (caseeventid, caseid, eventdate, 
         eventcomments, 
         methodofcommunication, createdby, creationdate, lastupdateby, lastupdatedate)
      values
        (caseeventid_pk.nextval, caseid_pk.currval, :new.date,
         'New Test Result Available: include here the test result',
         null, 'NewTest_CaseEvent_Trigger', sysdate, null, null); 
  end if;
end;
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