ORA-01403: 在 oracle plsql 过程中找不到数据

Question

project_id 和任务编号的每个组合都存在一行数据，但会抛出“找不到数据”错误。 SELECT into 会引发错误，但只有带有 where 子句的 select 才获取一行数据。 流程如下

`

   PROCEDURE GET_TASK_ID(P_TASK_NUMBER_IN IN VARCHAR2,
   P_PROJ_ID_IN NUMBER,
   P_TASK_ID_OUT OUT NUMBER) IS
   L_TASK_ID_OUT NUMBER;
   BEGIN
   G_PROC_NAME := 'GET_TASK_ID';
   G_ERR_LOCATION := '10';

   BEGIN
   SELECT TASK_ID INTO L_TASK_ID_OUT
   FROM PA_TASKS
   WHERE PROJECT_ID =P_PROJ_ID_IN
   AND TASK_NUMBER =P_TASK_NUMBER_IN
   AND CHARGEABLE_FLAG = 'Y';
   P_TASK_ID_OUT := L_TASK_ID_OUT;

我认为任务编号有换行符。

替换和翻译功能不适用于我的场景。请问这里有任何线索吗？

Answer 1

在程序之外，运行：

SELECT TASK_ID,
       TASK_NUMBER,
       DUMP(TASK_NUMBER)
FROM   PA_TASKS
WHERE  PROJECT_ID      = :your_expected_project_id
AND    TASK_NUMBER     LIKE :your_expected_task_number || '%'
AND    CHARGEABLE_FLAG = 'Y';

并且

DUMP

将显示任务编号中的字节值，让您查看值末尾是否有空格、回车符或换行符（分别为 ASCII 32、13、10）。

例如，如果您有尾随回车符，则可以使用以下方法将其删除：

UPDATE PA_TASKS
SET    task_number     = RTRIM(task_number, CHR(13)) -- Use CHR and the ASCII value
WHERE  PROJECT_ID      = :your_expected_project_id
AND    TASK_NUMBER     LIKE :your_expected_task_number || '%'
AND    CHARGEABLE_FLAG = 'Y';

---

顺便说一句，您的过程可以使用列数据类型编写，无需中间变量或嵌套 PL/SQL 块：

PROCEDURE GET_TASK_ID(
  P_TASK_NUMBER_IN IN  PA_TASKS.TASK_NUMBER%TYPE,
  P_PROJ_ID_IN     IN  PA_TASKS.PROJECT_ID%TYPE,
  P_TASK_ID_OUT    OUT PA_TASKS.TASK_ID%TYPE
)
IS
BEGIN
   SELECT TASK_ID
   INTO   P_TASK_ID_OUT
   FROM   PA_TASKS
   WHERE  PROJECT_ID      = P_PROJ_ID_IN
   AND    TASK_NUMBER     = P_TASK_NUMBER_IN
   AND    CHARGEABLE_FLAG = 'Y';
END;

小提琴