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Oracle PL/SQL/Object Oriented Database/NOT INSTANTIABLE - История изменений
2026-04-04T18:19:22Z
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в 13:45, 26 мая 2010
2010-05-26T13:45:19Z
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Admin: 1 версия
2010-05-26T10:02:39Z
<p>1 версия</p>
<p><b>Новая страница</b></p><div>==instantiate shape error==<br />
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<!-- start source code --><br />
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<source lang="sql"><br />
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SQL><br />
SQL> create or replace<br />
2 type shape as object(number_of_sides number, not instantiable member function calculate_area return number<br />
3 )<br />
4 not instantiable not final<br />
5 /<br />
Type created.<br />
SQL><br />
SQL><br />
SQL><br />
SQL> declare<br />
2 l_shape shape;<br />
3 begin<br />
4 l_shape := shape( 2 );<br />
5 end;<br />
6 /<br />
l_shape := shape( 2 );<br />
*<br />
ERROR at line 4:<br />
ORA-06550: line 4, column 13:<br />
PLS-00713: attempting to instantiate a type that is NOT INSTANTIABLE<br />
ORA-06550: line 4, column 2:<br />
PL/SQL: Statement ignored<br />
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SQL><br />
SQL><br />
</source></div>
Admin