出现错误 ORA-06502: PL/SQL: numeric or value error

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【中文标题】出现错误 ORA-06502: PL/SQL: numeric or value error【英文标题】:Getting error ORA-06502: PL/SQL: numeric or value error 【发布时间】:2020-02-28 06:49:07 【问题描述】:

我来了

ORA-06502:PL/SQL:以下代码中的数字或值错误:

record_state := record_state || 'Inserting record Entry for student: ' || 
                roll_no || ' for date: ' || To_Char(admission_date,'yyyymmdd') ||
                ' @ ' || TO_CHAR(SYSDATE, 'YYYY-MM-DD HH24:MI:SS') || CHR(10);

以下是数据类型:

roll_no        - NUMBER(10,0)
admission_date - TIMESTAMP(6)
record_state   - CLOB

【问题讨论】:

您是否尝试过逐个删除表达式,直到找到有问题的表达式? 【参考方案1】:

如果你有 lob 对象,我建议使用 DBMS_LOB 库。

DECLARE
  record_state  CLOB;  
BEGIN
  DBMS_LOB.CREATETEMPORARY(record_state);  

  -- here you should make sure that the string is not too long (max 32K), otherwise the concatenation with pipes will not work. There will be an exception.
  DBMS_LOB.append (record_state , 'Inserting record Entry for student: ' || roll_no || ' for date: ' || To_Char(admission_date,'yyyymmdd') || ' @ ' || TO_CHAR(SYSDATE, 'YYYY-MM-DD HH24:MI:SS') || CHR(10)); 

  -- do more operations
  dbms_lob.freetemporary(record_state);

END ;
/

【讨论】:

【参考方案2】:

您需要使用to_clob将字符串转换为clob,然后您可以连接两个clob,如下所示:

record_state := record_state || 
                to_clob(
                        'Inserting record Entry for student: ' || roll_no || ' for date: ' || To_Char(admission_date,'yyyymmdd') || ' @ ' || TO_CHAR(SYSDATE, 'YYYY-MM-DD HH24:MI:SS') || CHR(10)
                       );

干杯!!

【讨论】:

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