SQL> declare
2 type my_type is table of varchar2(12) index by binary_integer; 2 type my_type is table of v
2 type my_type is table of varchar2(12) index by binary_integer; 2 type my_type is table of v
阅读背景：
在pl/sql->command window 中执行后并没有输出结果呀？
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