plsql - PLS-00103 函数结束时出错

Question

收到与函数相关的以下错误:

'ERROR at line 20: PLS-00103: Encountered the symbol "end-of-file" when expecting one of the following: end not pragma final instantiable order overriding static member constructor map 0.01 seconds

CREATE OR REPLACE FUNCTION Function1
RETURN FLOAT
IS 
    PricePerBug FLOAT,
    NumberOfBugs NUMBER,
    TotalIncome FLOAT;
BEGIN
    SELECT SUM(ProjectValue) INTO TotalIncome FROM tblProject;
    SELECT COUNT(idBug) INTO NumberOfBugs FROM tblBug;
    PricePerBug := (NumberOfBugs)/(TotalIncome);
    RETURN PricePerBug;
EXCEPTION
    WHEN NO_DATA_FOUND THEN
    DBMS_OUTPUT.PUT_LINE('No data found, no result to display; exception handled...');
    WHEN TOO_MANY_ROWS THEN
    RETURN 'Too many rows returned...';
    WHEN OTHERS THEN
    RAISE_APPLICATION_ERROR(-20015, 'Unknown exception in function Function1.');
END Function1;
/

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Answer 1

声明应该全部以分号而不是逗号结尾:

PricePerBug FLOAT;
NumberOfBugs NUMBER;
TotalIncome FLOAT;

还有其他与此错误无关的异常处理问题:

1. 如果曾经出现过 NO_DATA_FOUND(它不会)你会得到错误“ORA-06503: PL/SQL: 函数没有值(value)返回”因为你处理异常但不返回一个值。

2. 如果曾经出现过 TOO_MANY_ROWS(不会出现)，您将收到错误消息，因为您无法从仅返回 FLOAT 类型值的函数中返回文本“返回的行太多...” !

3. 如果(可能)出现任何其他异常，您将不知道它是什么，因为您将有用的 Oracle 异常替换为您自己无用的“未知异常”消息。

此特定函数的错误处理的正确数量是无，即:

CREATE OR REPLACE FUNCTION Function1
RETURN FLOAT
IS 
    PricePerBug FLOAT;
    NumberOfBugs NUMBER;
    TotalIncome FLOAT;
BEGIN
    SELECT SUM(ProjectValue) INTO TotalIncome FROM tblProject;
    SELECT COUNT(idBug) INTO NumberOfBugs FROM tblBug;
    PricePerBug := (NumberOfBugs)/(TotalIncome);
    RETURN PricePerBug;
END Function1;