Question

我有以下oracle语句，它给出了编译错误。

v_percent_deceased_households := CASE
WHEN NVL(v_total_households, 0) > 0 THEN 
     (CAST(NVL(v_deceased_households_count, 0) AS FLOAT(53)) 
       / 
     CAST(NVL(v_total_households, 0) AS FLOAT(53))) * 100
   ELSE 0
      END;

错误是：

错误：

PLS-00103: Encountered the symbol "(" when expecting one of the following:. ) @ %
       The symbol ")" was substituted for "(" to continue.
Line: 317
Text: (CAST(NVL(v_deceased_households_count, 0) AS FLOAT(53)) / CAST(NVL(v_total_households, 0) AS FLOAT(53))) * 100

Error: PLS-00103: Encountered the symbol "(" when expecting one of the following:. ) @ %
Line: 317
Text: (CAST(NVL(v_deceased_households_count, 0) AS FLOAT(53)) / CAST(NVL(v_total_households, 0) AS FLOAT(53))) * 100

我似乎无法解决此语法错误..

Answer 1

为什么CAST（...... AS FLOAT（53））？为什么不呢：

v_percent_deceased_households := CASE
WHEN v_total_households > 0 THEN 
     (NVL(v_deceased_households_count, 0) / v_total_households) * 100
   ELSE 0
      END;

（我也删除了一些冗余的NVL）。

Answer 2

我相信CAST必须用于选择或'选择进入' 例如 select cast（'22 -Aug-2003'AS varchar2（30））来自双重;

或选择cast（v_deceased_households_count AS float）到myfloat中来自双重;

oracle语句的编译错误

2 个答案: