PLSQL 在期望以下之一时遇到符号“YES”

Posted 2023-03-27

【中文标题】PLSQL 在期望以下之一时遇到符号“YES”

【英文标题】：PLSQL Encountered the symbol "YES" when expecting one of the following

【发布时间】：2019-12-14 00:20:56

【问题描述】：

您好，我正在尝试使用 PLSQL 创建一个汇总统计表。我是 PLSQL 的新手。我不断收到此错误。 预期以下情况之一时遇到符号“YES”

下面是我的代码。

DECLARE
AGE NUMBER;
CAMPAIGN NUMBER;
PDAYS NUMBER;
PREVIOUS NUMBER;
POUTCOME NUMBER;
EMP_VAR_RATE NUMBER;
CONS_PRICE_IDX NUMBER;
CONS_CONF_IDX NUMBER;
EURIBOR3M NUMBER;
Y VARCHAR;


BEGIN
 EXECUTE IMMEDIATE ('
CREATE TABLE SUMMARY_STAT
AS

SELECT 
ROUND(AVG(AGE)) AS AVERAGE_AGE
,ROUND(AVG(CAMPAIGN)) AS AVERAGE_CONTACTS_MADE
,ROUND(AVG(PDAYS)) AS NO_DAYS_PASSED
,ROUND(AVG(PREVIOUS)) AS AVERAGE_PREVIOUS_CONTACTS_MADE
,ROUND(AVG(EMP_VAR_RATE)) AS AVERAGE_EMPLOYEE_VARIATION
,ROUND(AVG(CONS_PRICE_IDX)) AS AVERAGE_CONSUMER_PRICE_INDEX
,ROUND(AVG(CONS_CONF_IDX)) AS AVERAGE_CONSUMER_CONFIDENCE_INDEX
,ROUND(AVG(EURIBOR3M)) AS AVERAGE_EURIBOR
,COUNT(CASE WHEN Y = 'yes' THEN 1 end) AS NUMBER_CUSTOMERS_TOOK_DEPOSIT
,COUNT(CASE WHEN Y = 'no' THEN 1 end) AS NUMBER_CUSTOMERS_DIDNT_TAKE_DEPOSIT

FROM BANK_DATA
');

END;

【参考方案1】：

问题是您在较大的字符串中有单引号。不幸的是，从解释器的角度来看，您在 'Create ... when Y = ' 中的字符串是一个字符串，而下一个标记是解释器不理解的单词“yes”。 你有两个选择：

将较大字符串中所需的引号加倍。 使用替代quote delimiter。

使用引号分隔符你会得到：

BEGIN
 EXECUTE IMMEDIATE (q'[
CREATE TABLE SUMMARY_STAT
AS

SELECT 
ROUND(AVG(AGE)) AS AVERAGE_AGE
,ROUND(AVG(CAMPAIGN)) AS AVERAGE_CONTACTS_MADE
,ROUND(AVG(PDAYS)) AS NO_DAYS_PASSED
,ROUND(AVG(PREVIOUS)) AS AVERAGE_PREVIOUS_CONTACTS_MADE
,ROUND(AVG(EMP_VAR_RATE)) AS AVERAGE_EMPLOYEE_VARIATION
,ROUND(AVG(CONS_PRICE_IDX)) AS AVERAGE_CONSUMER_PRICE_INDEX
,ROUND(AVG(CONS_CONF_IDX)) AS AVERAGE_CONSUMER_CONFIDENCE_INDEX
,ROUND(AVG(EURIBOR3M)) AS AVERAGE_EURIBOR
,COUNT(CASE WHEN Y = 'yes' THEN 1 end) AS NUMBER_CUSTOMERS_TOOK_DEPOSIT
,COUNT(CASE WHEN Y = 'no' THEN 1 end) AS NUMBER_CUSTOMERS_DIDNT_TAKE_DEPOSIT
FROM BANK_DATA
]');

END;