Question

表Attendance：

EMPL_KODE |EMPL_NAME  |DATE_IN    |TIME_IN |TIME_OUT|TOTAL_MIN |TOTAL_HOUR
--------------------------------------------------------------------------
    001   | Michel    |25.04.2016 |06:50   |15:40   |NULL      |NULL
    002   | Clara     |25.04.2016 |06:15   |15:43   |NULL      |NULL
    003   | Rafael    |25.04.2016 |06:25   |15:45   |NULL      |NULL
    001   | Michel    |26.04.2016 |06:23   |15:42   |NULL      |NULL
    002   | Clara     |26.04.2016 |06:10   |15:41   |NULL      |NULL
    003   | Rafael    |26.04.2016 |06:30   |15:42   |NULL      |NULL
    001   | Michel    |27.04.2016 |06:33   |15:42   |NULL      |NULL
    002   | Clara     |27.04.2016 |06:54   |15:44   |NULL      |NULL
    003   | Rafael    |27.04.2016 |07:00   |15:45   |NULL      |NULL

我成功创建了使用以下语法自动为列TOTAL_MIN和TOTAL_HOUR插入值的过程：

SET TERM ^ ;
ALTER PROCEDURE UPDATEEMPLOYEES
AS
DECLARE VARIABLE EMPL_KODE CHAR(5);
DECLARE VARIABLE EMPL_NAME VARCHAR (25);
DECLARE VARIABLE TIME_IN TIMESTAMP;
DECLARE VARIABLE TIME_OUT TIMESTAMP;
DECLARE VARIABLE TOTAL_MINUTES INTEGER;
DECLARE VARIABLE TOTAL_HOURS FLOAT;

BEGIN 
FOR SELECT e.EMPL_KODE, e.EMPL_NAME,
       CAST(a.DATE_IN + a.TIME_IN AS TIMESTAMP),
       CAST(a.DATE_IN + a.TIME_OUT AS TIMESTAMP),
       DATEDIFF(MINUTE,a.TIME_IN,a.TIME_OUT),
       DATEDIFF(HOUR,a.TIME_IN,a.TIME_OUT)
       FROM EMPLOYEE e
       JOIN ATTENDANCE a
       ON e.EMPL_KODE=a.EMPL_KODE

INTO :EMPL_KODE,:EMPL_NAME,:TIME_IN,:TIME_OUT,TOTAL_MINUTES,TOTAL_HOURS
DO
       UPDATE ATTENDANCE a
       set a.TOTAL_MINUTES=:TOTAL_MINUTES,
       a.TOTAL_HOURS=:TOTAL_HOURS
       WHERE a.EMPL_KODE=:EMPL_KODE;

end^
SET TERM ; ^

但问题是如何直接用UPDATE或INSERT INTO编写语法？我试过但仍然没有工作。

我编写的代码与Firebird指令相同。

   UPDATE OR INSERT INTO
   {tablename | viewname} [(<columns>)]
   VALUES (<values>)
   [MATCHING (<columns>)]
   [RETURNING <values> [INTO <variables>]]

<columns>      ::=  colname  [, colname  ...]
<values>       ::=  value    [, value    ...]
<variables>    ::=  :varname [, :varname ...]

这是我的代码：

我不写Returning，因为我不明白它是什么。

SET TERM ^ ;
ALTER PROCEDURE BLABLA(
    TOTAL_M INTEGER,
    TOTAL_H FLOAT)
AS
BEGIN 
    UPDATE or INSERT INTO ATTENDANCE (TOTAL_MINUTES,TOTAL_HOURS)
    VALUES (:TOTAL_M,:TOTAL_H)
    MATCHING (EMPL_KODE);
end^
SET TERM ; ^

提交语句后，它显示错误消息：

UPDATE OR INSERT字段列表与MATCHING子句
不匹配

我该怎么办？

Answer 1

我认为问题在于您有MATCHING (EMPL_KODE)但是您没有在值列表中列出EMPL_KODE列 - 您希望引擎如何确定要更新的行？尝试类似：

SET TERM ^ ;
ALTER PROCEDURE BLABLA(
    E_KODE CHAR(5),
    TOTAL_M INTEGER,
    TOTAL_H FLOAT)
AS
BEGIN 
    UPDATE or INSERT INTO ATTENDANCE (TOTAL_MINUTES,TOTAL_HOURS, EMPL_KODE)
    VALUES (:TOTAL_M,:TOTAL_H, :E_KODE)
    MATCHING (EMPL_KODE);
end^
SET TERM ; ^

Answer 2

最后，我从http://www.firebirdfaq.org/faq336

得到了答案

isset($$vuln) and $$vuln = htmlentities($$vuln);

UPDATE或INSERT INTO在程序中不起作用？

2 个答案: