index：1缺少IN或OUT参数Oracle

Question

当运行这个小脚本时，我收到错误“在index :: 1处缺少IN或OUT参数”不确定我在哪里犯错/ s？

{ 
DECLARE 
    LV_CODE_TXT VARCHAR (5) := 'A'; 
    LV_ORDERTOTAL_NUM NUMBER(6,2) := 100; 
    LV_DISCOUNT_NUM NUMBER(5,2); 
BEGIN 
    IF LV_CODE_TXT IN ('A','E') 
    THEN 
    LV_DISCOUNT_NUM =: LV_ORDERTOTAL_NUM * .05; 
    DBMS_OUPTUT.PUT_LINE (LV_DISCOUNT_NUM); 
    ELSIF LV_CODE_TXT IN ('B','C') 
    THEN 
    LV_DISCOUNT_NUM := LV_ORDERTOTAL_NUM * .10; 
    DBMS_OUTPUT.PUT_LINE (LV_DISCOUNT_NUM) 
    ELSIF LV_CODE_TXT = 'D' 
    THEN 
    LV_DISCOUNT_NUM := LV_ORDERTOTAL_NUM * .15; 
    DBMS_OUTPUT.PUT_LINE (LV_DISOCUNT_NUM); 
    ELSE 
    LV_DISOUNT_NUM := 0; 
    DBMS_OUTPUT.PUT_LINE(LV_DISOUNT_NUM); 
    END IF; 
END; 
} 

Answer 1

你有几个拼写错误，语法错误，最重要的是你并不需要打开和关闭大括号（{}），所以尝试以下

DECLARE 
    LV_CODE_TXT   VARCHAR (5) := 'A'; 
    LV_ORDERTOTAL_NUM NUMBER (6, 2) := 100; 
    LV_DISCOUNT_NUM  NUMBER (5, 2); 
BEGIN 
    IF LV_CODE_TXT IN ('A', 'E') 
    THEN 
     LV_DISCOUNT_NUM := LV_ORDERTOTAL_NUM * .05; 
     DBMS_OUTPUT.PUT_LINE(LV_DISCOUNT_NUM); 
    ELSIF LV_CODE_TXT IN ('B', 'C') 
    THEN 
     LV_DISCOUNT_NUM := LV_ORDERTOTAL_NUM * .10; 
     DBMS_OUTPUT.PUT_LINE (LV_DISCOUNT_NUM); 
    ELSIF LV_CODE_TXT = 'D' 
    THEN 
     LV_DISCOUNT_NUM := LV_ORDERTOTAL_NUM * .15; 
     DBMS_OUTPUT.PUT_LINE (LV_DISCOUNT_NUM); 
    ELSE 
     LV_DISCOUNT_NUM := 0; 
     DBMS_OUTPUT.PUT_LINE (LV_DISCOUNT_NUM); 
    END IF; 
END;