Question

我是PL \ SQL的初学者，在练习一个小代码时，我收到的错误如下

Error(7,1): PL/SQL: Statement ignored
Error(7,13): PLS-00302: component 'PUT_LINES' must be declared
Error(10,1): PL/SQL: Statement ignored
Error(10,50): PLS-00201: identifier 'LEGTH' must be declared

这是我用于练习的代码

create or replace procedure show_variable_length as 
    my_char char(50) := 'Hello';
    my_varchar  varchar(25) := 'World';
    my_varchar2 varchar2(25) := 'World';
    my_null_test varchar2(25);

begin 
dbms_output.put_lines (my_char || ' ' || my_varchar);
dbms_output.put_line (my_char || ' ' || my_varchar2);
dbms_output.put_line('Length of my_char = ' || length(my_char));
dbms_output.put_line('Lenght of my_varchar= ' || legth(my_varchar));
dbms_output.put_line('Length of my_varchar2 = ' || length(my_varchar2));
my_char := ' ';
my_varchar := ' ';
my_varchar2 := ' ';
dbms_output.put_line ('Length of my char = ' || length(my_char));
end;

请帮忙。

Answer 1

关键字长度（没有n的legth）和put_line（put_lines结尾有附加s）有拼写错误

在关键字长度中出现拼写错误

dbms_output.put_line('Lenght of my_varchar= ' || legth(my_varchar));

在put_line

中出现拼写错误

dbms_output.put_lines(my_char || ' ' || my_varchar);

整改代码

create or replace procedure show_variable_length as 
    my_char char(50) := 'Hello';
    my_varchar  varchar(25) := 'World';
    my_varchar2 varchar2(25) := 'World';
    my_null_test varchar2(25);

begin 
dbms_output.put_line(my_char || ' ' || my_varchar);
dbms_output.put_line(my_char || ' ' || my_varchar2);
dbms_output.put_line('Length of my_char = ' || length(my_char));
dbms_output.put_line('Lenght of my_varchar= ' || length(my_varchar));
dbms_output.put_line('Length of my_varchar2 = ' || length(my_varchar2));
my_char := ' ';
my_varchar := ' ';
my_varchar2 := ' ';
dbms_output.put_line('Length of my char = ' || length(my_char));
end;

PL \ SQL语句忽略错误

1 个答案: