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我有綁定變量的問題(與其默認設置BindByPosition specyfic)。例如,我有如下程序:在PL/SQL中設置BindByName
DECLARE
v_sql varchar2;
BEGIN
v_sql := 'select :1 as field1, :1 as field2 from dual';
EXECUTE IMMEDIATE v_sql USING 'test', 'test';
END;
現在我需要輸入'test'兩次。我怎樣才能改變BindByName爲真,有步驟是這樣的:
DECLARE
v_sql varchar2;
BEGIN
v_sql := 'select :1 as field1, :1 as field2 from dual';
EXECUTE IMMEDIATE v_sql USING 'test';
END;
當你嘗試把兩地人在你的動態查詢然後肯定會需要兩個綁定變量。它不能被改爲一個。 – XING