SQL例外關於ORA-01722：不是有效的數字

Question

表結構調查：

create table VOTE_PROPOSER 
(
    ID    NUMBER not null, 
    NAME   VARCHAR2(100), 
    GENDER   VARCHAR2(50), 
    BIRTHDAY  DATE, 
    IDENTITYTYPE VARCHAR2(50), 
    IDENTITYCODE VARCHAR2(100), 
    PHONENUMBER  VARCHAR2(50), 
    CHANNELS  VARCHAR2(50), 
    AUTHOR   VARCHAR2(50), 
    INSTITUTIONCODE VARCHAR2(50), 
    MAILADDRESS  VARCHAR2(200), 
    ZIPCODE   VARCHAR2(50), 
    IPNO   VARCHAR2(50), 
    RETIANVARCHAR4 VARCHAR2(50), 
    RETIANVARCHAR5 VARCHAR2(50), 
    RETAINDATE1  DATE, 
    RETAINDATE2  DATE, 
    ISCUSTOMER  NUMBER, 
    RETAINNUMBER2 NUMBER, 
    RETAINNUMBER3 NUMBER, 
    RETAINNUMBER4 NUMBER, 
    RETAINNUMBER5 NUMBER, 
    SALEMANNAME  VARCHAR2(100), 
    SALEMANMOBILE VARCHAR2(11), 
    COUNTRYCODE  VARCHAR2(8), 
    PROVINCECODE VARCHAR2(8) 
) 

SQL查詢：

SELECT count(*) FROM VOTE_PROPOSER WHERE 1=1 and ID='11111' 

Answer 1

你爲什麼用字符串比較ID？

甲骨文通常autoconverts串數字，但如果你的錯誤，你可以使用：

SELECT count(*) FROM VOTE_PROPOSER WHERE 1=1 and ID=11111