這裏是我的代碼。請原諒我不要把變量放在聲明部分,因爲編輯在給我提交問題之前給我格式化了一些困難時間。甲骨文FOR循環內FOR循環
我想要的結果變量(v_Var)具有值打印爲
v_ID = :NEW.ID;
v_NAME = :NEW.NAME;
v_ENTITY_ID = :NEW.ENTITY_ID;
但是,它是越來越打印爲
v_ID = :NEW.ID;
v_ID = :NEW.ID;
v_NAME = :NEW.NAME;
v_ENTITY_ID = :NEW.ENTITY_ID;
由於表TEMP_TRG_CONSTRNT有兩行,則工作v_ID也是兩次。 我知道問題是與外部FOR循環,但我不知道如何處理它。
DECLARE
CURSOR c1 IS
SELECT NAME, OCCUR_COUNT FROM IFMS_SYSTEMCONFIGURATION.TEMP_TRG_CONSTRNT;
BEGIN
v_TableName := 'MyTable';
EXECUTE IMMEDIATE 'TRUNCATE TABLE IFMS_SYSTEMCONFIGURATION.TEMP_TRG_CONSTRNT';
INSERT INTO IFMS_SYSTEMCONFIGURATION.TEMP_TRG_CONSTRNT (NAME, OCCUR_COUNT)
SELECT A.FKN, COUNT(A.FKN) AS OCCUR_COUNT FROM
(
SELECT A.CONSTRAINT_NAME AS FKN FROM ALL_CONSTRAINTS A
INNER JOIN ALL_CONS_COLUMNS B
ON A.CONSTRAINT_NAME = B.CONSTRAINT_NAME
WHERE A.CONSTRAINT_TYPE IN ('P', 'U') AND A.TABLE_NAME = 'MyTable'
)A
GROUP BY A.FKN;
--FOR CONSTR_NAME IN (SELECT NAME FROM IFMS_SYSTEMCONFIGURATION.TEMP_TRG_CONSTRNT)
FOR CONSTR_NAME IN c1
LOOP
--SELECT NAME, OCCUR_COUNT INTO v_Constr_Name, v_Index_Count FROM TEMP_TRG_CONSTRNT WHERE NAME = CONSTR_NAME.NAME;
FOR COL_NAME IN (SELECT COLUMN_NAME FROM ALL_CONS_COLUMNS WHERE CONSTRAINT_NAME = CONSTR_NAME.NAME)
LOOP
v_Var := v_Var || 'v_' || COL_NAME.COLUMN_NAME || ' = :NEW.' || COL_NAME.COLUMN_NAME || ';' || CHR(13);
END LOOP;
DBMS_OUTPUT.PUT_LINE(v_Var);
END LOOP;
END;
能告訴你,你已經取得了什麼樣的代碼? – Tenzin
我用實際的代碼替換了前面的描述。 –
您是否嘗試過在for循環中使用'SELECT DISTINCT'來刪除重複項? – Jeremy