Oracle函数编译错误PLS-00103（遇到符号“SELECT”...）

Question

我在编译这个函数时收到以下错误：

PROCEDURE INV.USP_MSC_MODIFICA_ESTADO 的编译错误

Error: PLS-00103: Encountered the symbol "SELECT" when expecting one of the following:( - + case mod new not null <an identifier>
<a double-quoted delimited-identifier> <a bind variable>
 continue avg count current exists max min prior sql stddev
sum variance execute forall merge time timestamp interval
date <a string literal with character set specification>
<a number> <a single-quoted SQL string> pipe
<an alternatively-quoted string literal with character set specification>
<an alternat    Line: 14    Text: IF SELECT TRUNC((SYSDATE) -TO_DATE(@FCH_GRABACION, 'DD/MM/YYYY HH24:MI:SS')) From DUAL=1 THEN

CREATE OR REPLACE PROCEDURE "USP_MSC_MODIFICA_ESTADO" AS
  BEGIN
    DECLARE
      CURSOR reservar IS
      SELECT
        id_reserva,
        fch_grabacion 
       FROM tb_msc_reserva
      WHERE to_date(to_char(fch_grabacion, 'dd/mm/yyyy')) = to_date(to_char(SYSDATE, 'dd/mm/yyyy')) - 1;
      id_reserva    VARCHAR2(50);
      fch_grabacion DATE;
    BEGIN
      OPEN reservar;
      FETCH reservar INTO id_reserva, fch_grabacion;

      IF SELECT TRUNC((SYSDATE) - TO_DATE(@fch_grabacion, 'DD/MM/YYYY HH24:MI:SS')) FROM dual=1 THEN

      UPDATE inv.tb_msc_reserva t
      SET t.flg_estado = 'C'
      WHERE id_reserva = @id_reserva;
      COMMIT;
    END if;
    WHILE (@@fetch_status = 0)

    CLOSE RESERVAR;

  END;

Answer 1

Franky 说代码中有太多错误。写不完。 几个错误：

1. 不需要在第 4 行声明。
2. Begin 语句过多。
3. 虽然 (@@FETCH_STATUS=0) 不用于循环终止。使用 EXIT WHEN。

4. 错过了循环开始和结束循环[假设您使用的是循环，因为您是光标而不是选择进入]

   CREATE OR REPLACE PROCEDURE "USP_MSC_MODIFICA_ESTADO"
   AS
   CURSOR reservar
   IS
   SELECT id_reserva, fch_grabacion
   FROM tb_msc_reserva
   WHERE TO_DATE (TO_CHAR (fch_grabacion, 'dd/mm/yyyy')) =
   TO_DATE (TO_CHAR (SYSDATE, 'dd/mm/yyyy'))
   - 1;
   
   id_reserva      VARCHAR2 (50);
   fch_grabacion   DATE;
   BEGIN
   OPEN reservar;
   
   FETCH reservar
   INTO id_reserva, fch_grabacion;
   
   LOOP
   IF (SELECT TRUNC (  (SYSDATE) - TO_DATE (@fch_grabacion, 'DD/MM/YYYY HH24:MI:SS'))
   FROM DUAL) = 1
   THEN
   UPDATE inv.tb_msc_reserva t
   SET t.flg_estado = 'C'
   WHERE id_reserva = @id_reserva;
   
   COMMIT;
   END IF;
   
   EXIT WHEN (@@fetch_status = 0);
   END LOOP;
   
   CLOSE reservar;
   END;
   

Answer 2

我很抱歉，但我真的是 Oracle 的新手。我已经更改了代码，但我一直收到同样的错误。

CREATE OR REPLACE PROCEDURE "USP_MSC_MODIFICA_ESTADO"
AS
CURSOR reservar
IS 
SELECT id_reserva, fch_grabacion
FROM tb_msc_reserva
WHERE to_date(FCH_GRABACION,'dd/mm/yyyy') =  to_date(SYSDATE,'dd/mm/yyyy')-  1;

reserva      VARCHAR2 (50);
fch_grabacion   DATE;
BEGIN
OPEN reservar;
FETCH reservar
INTO reserva, fch_grabacion;

LOOP
IF (SELECT TRUNC((SYSDATE) -TO_DATE(fch_grabacion, 'DD/MM/YYYY HH24:MI:SS'))From DUAL=1)

THEN
UPDATE inv.tb_msc_reserva t
SET t.flg_estado = 'C'
WHERE id_reserva = reserva;

COMMIT;
END IF;

EXIT WHEN reservar%NOTFOUND ;
END LOOP;

CLOSE reservar;
END;

我想做的是比较两个日期（dd/mm/yyyy HH:mm:ss）。 （昨天和今天）如果我的注册表超过 24 小时，那么 ID_ESTADO='C'

我这里有错误：

 IF (SELECT TRUNC((SYSDATE) -TO_DATE(fch_grabacion, 'DD/MM/YYYY  HH24:MI:SS'))   From DUAL=1)

消息：

 Compilation errors for PROCEDURE INV.USP_MSC_MODIFICA_ESTADO
Error: PLS-00103: Encountered the symbol "SELECT" when expecting one of  the following:

  ( - + case mod new not null <an identifier>
  <a double-quoted delimited-identifier> <a bind variable>
  continue avg count current exists max min prior sql stddev
  sum variance execute forall merge time timestamp interval
  date <a string literal with character set specification>
  <a number> <a single-quoted SQL string> pipe
  <an alternatively-quoted string literal with character set  specification>
   <an alternat
 Line: 18
 Text: IF (SELECT TRUNC((SYSDATE) -TO_DATE(fch_grabacion, 'DD/MM/YYYY    HH24:MI:SS')) From DUAL=1)

 Error: PLS-00103: Encountered the symbol "=" when expecting one of the   f       oollowing:

  . , @ ; for <an identifier>
  <a double-quoted delimited-identifier> group having intersect
  minus order partition start subpartition union where connect
  sample
Line: 18
Text: IF (SELECT TRUNC((SYSDATE) -TO_DATE(fch_grabacion, 'DD/MM/YYYY        HH24:MI:SS')) From DUAL=1)

谢谢

Answer 3

你的代码的问题是你在 Select 子句中使用了与 1 的比较。 你的代码：

IF (SELECT TRUNC((SYSDATE) -TO_DATE(fch_grabacion, 'DD/MM/YYYY HH24:MI:SS'))From DUAL=1)

更正的代码：

IF (SELECT TRUNC (  (SYSDATE) - TO_DATE (fch_grabacion, 'DD/MM/YYYY HH24:MI:SS')) FROM DUAL) = 1

但是，有更好的方法来比较 24 小时时差[我在这里感到困惑，因为你是指 1 天时差还是 24 小时时差]： 1.如果要比较24小时：

IF TO_DATE (fch_grabacion, 'DD/MM/YYYY HH24:MI:SS') < (SYSDATE - 1)

2。如果你想比较一维：

IF TO_DATE (fch_grabacion, 'DD/MM/YYYY') < TRUNC ((SYSDATE - 1))

希望这会有所帮助。如果是这样。不要忘记将此答案标记为已接受并投票。[我可以做一些额外的代表：p]