Q-Quote执行立即PL / SQL

Question

我有以下更新声明：

UPDATE COL_VAL SET DESC_VALUE=q'['TOM','JOHN','MARIE','VANI','PUTIN']' WHERE TYPE_NAME||TYPE='OLDHOL' ;

当我在执行立即执行上面的a-quote时，PL / SQL无法识别语法。

DECLARE
upd_stmnt varchar2(4000);
BEGIN
    upd_stmnt := q'[UPDATE COL_VAL SET DESC_VALUE=q'['TOM','JOHN','MARIE','VANI','PUTIN']' WHERE     TYPE_NAME||TYPE='OLDHOL']';
EXECUTE IMMEDIATE upd_stmnt;
END;
/

请帮忙。

Answer 1

似乎你无法嵌套q引用的字符串，请尝试这个

DECLARE
  upd_stmnt varchar2(4000);
BEGIN
    upd_stmnt := q'[UPDATE COL_VAL SET DESC_VALUE = '''TOM'',''JOHN'',''MARIE'',''VANI'',''PUTIN''' WHERE TYPE_NAME || TYPE='OLDHOL']';
EXECUTE IMMEDIATE upd_stmnt;
END;
/