[SQL ] PL SQL 變數問題
剛接觸PL/SQL幾個月，之前都是寫PHP，
想請問註解處有辦法組合成變數後印出值嗎?
DECLARE
CURSOR c1 IS (SELECT 'A' col_1, 'B' col_2, 'C' col_3
FROM dual)
BEGIN
FOR r1 IN c1 LOOP
FOR i IN 1..3 LOOP
DBMS_OUTPUT.PUT_LINE( /* r1.col_i */ );
END LOOP;
END LOOP;
END;
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