在存储过程中将Select分配给变量 [英] Assign a Select to a variable in a stored procedure
问题描述
我尝试在Oracle数据库中创建一个过程,但无法将查询结果分配给我的变量.这是我要调试的内容:
I try to create a procedure in my Oracle Database and can't achieve to assign the result of a query to my variables. Here is what i'm trying to debug :
create or replace
PROCEDURE PCD_COMBAT (identifier_perso NUMBER, identifier_advers NUMBER) AS
ATT_PERSO NUMBER;
OFF_PERSO NUMBER;
DEF_ADVERS NUMBER;
BEGIN
OFF_PERSO := SELECT OFFENSE_PERSO FROM PERSONNAGE WHERE ID_PERSO = identifier_perso;
DEF_ADVERS := SELECT DEFENSE_ADVERSAIRE FROM PERSONNAGE WHERE ID_ADVERSAIRE = identifier_advers;
ATT_PERSO := OFF_PERSO - DEF_ADVERS;
IF ATT_PERSO < 1 { ATT_PERSO := 1 };
END PCD_COMBAT;
在Oracle Developper中清楚地表明,我的Select不能使他满意,也无法弄清楚原因.我读过的Oracle库,论坛和代码示例没有太大帮助.
It clearly says in Oracle Developper that my Select doesnt please him and can't figure out why. Oracle library, forums and code samples I read didnt help much.
推荐答案
您需要使用SELECT INTO
.同样,在PL/SQL
中没有括号,您需要使用THEN
和END IF
.我不太确定您如何处理结果.您要还给我吗?然后,您需要一个FUNCTION
.它应该看起来像这样(未经测试):
You need to use SELECT INTO
. Also there are no braces in PL/SQL
you need to use THEN
and END IF
. I am not quite sure what you do with the result. Do you want to give it back? Then you need a FUNCTION
. It should look something like this (untested):
create or replace
FUNCTION PCD_COMBAT (identifier_perso NUMBER, identifier_advers NUMBER)
RETURN NUMBER
AS
ATT_PERSO NUMBER;
OFF_PERSO NUMBER;
DEF_ADVERS NUMBER;
BEGIN
SELECT OFFENSE_PERSO
INTO OFF_PERSO
FROM PERSONNAGE
WHERE ID_PERSO = identifier_perso;
SELECT DEFENSE_ADVERSAIRE
INTO DEF_ADVERS
FROM PERSONNAGE
WHERE ID_ADVERSAIRE = identifier_advers;
ATT_PERSO := OFF_PERSO - DEF_ADVERS;
IF ATT_PERSO < 1 THEN
ATT_PERSO := 1;
END IF
RETURN ATT_PERSO;
END PCD_COMBAT;
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