Question

我一直在学习本教程：https://www.youtube.com/watch?v=ngOm5uBP1uE&feature=emb_title。

我在所有代码后加上了所需的变量，它们如下：

-创建表格

CREATE TABLE  "TB_USERS"
(
    "S_ID" NUMBER GENERATED ALWAYS AS IDENTITY(START with 1 INCREMENT by 1), 
    "S_FNAME" varchar2(30) NOT NULL ENABLE, 
    "S_LNAME" varchar2(30) NOT NULL ENABLE,
    "S_Password" varchar2(30) NOT NULL ENABLE,
    "S_DOB" date NOT NULL ENABLE,
    "EMAIL" varchar2(255) NOT NULL ENABLE,
    PRIMARY KEY ("S_ID") USING INDEX  ENABLE,
    CONSTRAINT "USERS_U1" UNIQUE ("EMAIL") USING INDEX  ENABLE
);

-创建加密功能

CREATE OR REPLACE FUNCTION ENCRYPT_PASSWORD
(
    p_username in varchar2,
    p_password  in varchar2)
return varchar2
is
    l_password varchar2(255);
    l_salt  varchar2(30) := 'RANDOM_SALT_STRING';
begin
    l_password := 
    DBMS_OBFUSCATION_TOOLKIT.MD5(input_string => UPPER(p_username) || l_salt || UPPER(p_password));
    return l_password;
end ENCRYPT_PASSWORD;

这两个sql脚本均已成功，但是在声明触发器时，它给我错误“ ORA-04070：无效的触发器名称ORA-06512：位于“ SYS.WWV_DBMS_SQL_APEX_200100 ”我为此脚本编写的代码是：

CREATE OR REPLACE TRIGGER 'TB_USERS_TRIGGER'
    BEFORE INSERT ON TB_USERS
    for each row
BEGIN 
    :new.EMAIL := upper(:new.EMAIL);
    :new.s_fname := lower(:new.s_fname);
    :new.s_password := ENCRYPT_PASSWORD(upper(:new.email), :new.s_password);
END;
/

Insert into TB_USERS ("EMAIL","S_Password") values ('VASCODIGAMA@GMAIL.COM','rainuma_16');
/

有什么想法我犯错或出错吗？

Answer 1

我认为您应该一起删除双引号。

SQL> CREATE TABLE TB_USERS
(
    S_ID NUMBER GENERATED ALWAYS AS IDENTITY(START with 1 INCREMENT by 1),
    S_FNAME varchar2(30) NOT NULL ENABLE,
    S_LNAME varchar2(30) NOT NULL ENABLE,
    S_Password varchar2(30) NOT NULL ENABLE,
    S_DOB date NOT NULL ENABLE,
    EMAIL varchar2(255) NOT NULL ENABLE,
    PRIMARY KEY (S_ID) USING INDEX  ENABLE,
    CONSTRAINT USERS_U1 UNIQUE (EMAIL) USING INDEX  ENABLE
); 

Table created.

SQL> CREATE OR REPLACE FUNCTION ENCRYPT_PASSWORD
    (
    p_username in varchar2,
    p_password  in varchar2)
return varchar2
    is
    l_password varchar2(255);
    l_salt  varchar2(30) := 'RANDOM_SALT_STRING';
begin
    l_password :=
    DBMS_OBFUSCATION_TOOLKIT.MD5(input_string => UPPER(p_username) || l_salt || UPPER(p_password));
    return l_password;
end ENCRYPT_PASSWORD;
   /

Function created.

SQL> CREATE OR REPLACE TRIGGER TB_USERS_TRIGGER
    BEFORE INSERT ON TB_USERS
      for each row
BEGIN
    :new.EMAIL := upper(:new.EMAIL);
    :new.s_fname := lower(:new.s_fname);
    :new.s_password := ENCRYPT_PASSWORD(upper(:new.email), :new.s_password);
   END;
/  

Trigger created.

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1 个答案: