存储过程中的 ORA-06502

Question

你好，我有一个简单的程序，可以很好地编译，但是在我初始化变量之后，错误是这样的。

table是这样创建的

Create table vcelar_pomocky 
(
    cislo_nakupu Number(5,0) NOT NULL ,
    cislo_ula Number(5,0) NOT NULL ,
    rodne_cislo Varchar2 (30) NOT NULL ,
    datum_nakupu Date NOT NULL ,
    nazov Varchar2 (20) NOT NULL ,
    typ_polozky Varchar2 (20) NOT NULL ,
    cena_polozky Number(5,2) NOT NULL ,

    primary key (cislo_nakupu) 
) 
/

程序如下所示：

CREATE OR REPLACE PROCEDURE quera_pomocky
(
v_cislo_nakupu  IN  VCELAR_POMOCKY.cislo_nakupu%TYPE,
v_nazov         OUT VCELAR_POMOCKY.nazov%TYPE,
v_cena_polozky  OUT VCELAR_POMOCKY.cena_polozky%TYPE
)
IS
BEGIN
    SELECT  nazov || ' ' || typ_polozky,cena_polozky
        INTO v_nazov,v_cena_polozky
        FROM VCELAR_POMOCKY
        WHERE v_cislo_nakupu = cislo_nakupu AND rodne_cislo = '750927/3913';
END quera_pomocky;
/

VARIABLE p_nazov VARCHAR2(20);
VARIABLE p_cena_polozky VARCHAR2(20);
EXECUTE quera_pomocky(24, :p_nazov , :p_cena_polozky);
PRINT p_nazov p_cena_polozky;

错误是

Error starting at line : 65 in command -
BEGIN quera_pomocky(24, :p_nazov , :p_cena_polozky); END;

Error report:

ORA-06502: PL/SQL: numeric or value error
ORA-06512: at "DOMA.QUERA_POMOCKY", line 9
ORA-06512: at line 1
06502. 00000 - "PL/SQL: numeric or value error%s"
*Cause: An arithmetic, numeric, string, conversion, or constraint error occurred. For example, this error occurs if an attempt is made to assign the value NULL to a variable declared NOT NULL, or if an attempt is made to assign an integer larger than 99 to a variable
declared NUMBER(2).

*Action: Change the data, how it is manipulated, or how it is declared so that values do not violate constraints.

Answer 1

您正在输入：

nazov || ' ' || typ_polozky

进入一个参数

v_nazov OUT VCELAR_POMOCKY.nazov%TYPE

这是 - 在 table 中 - 声明为

nazov Varchar2 (20)

所以：如果 nazov || ' ' || typ_polozky 的长度超过 20 个字符（请注意：两者都 - 在 table 中 - 声明为 varchar2(20) 这使得连接的 MAX长度41)，你有麻烦了。

我建议您将 OUT 参数设置为例如

v_nazov OUT varchar2(50)

存储过程中的 ORA-06502

ORA-06502 in a stored procedure

sql

oracle

procedure

ora-06502