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Oracle PL/SQL/Large Objects/blob - История изменений
2026-04-04T18:19:07Z
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в 13:45, 26 мая 2010
2010-05-26T13:45:19Z
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Admin: 1 версия
2010-05-26T10:02:05Z
<p>1 версия</p>
<p><b>Новая страница</b></p><div>==update blob column to a new value with HEXTORAW==<br />
<br />
<br />
<br />
<br />
<!-- start source code --><br />
<br />
<source lang="sql"><br />
<br />
SQL><br />
SQL><br />
SQL> CREATE TABLE lobdemo (<br />
2 key NUMBER,<br />
3 clob_col CLOB,<br />
4 blob_col BLOB);<br />
Table created.<br />
SQL><br />
SQL> INSERT INTO lobdemo (key, clob_col, blob_col)<br />
2 VALUES (50, "This is a character literal",<br />
3 HEXTORAW("FEFEFEFEFEFEFEFEFEFE"));<br />
1 row created.<br />
SQL><br />
SQL> INSERT INTO lobdemo (key, clob_col, blob_col)<br />
2 VALUES (51, "This is another character literal",<br />
3 HEXTORAW("ABABABABABABABABABAB"));<br />
1 row created.<br />
SQL><br />
SQL> UPDATE lobdemo<br />
2 SET blob_col = HEXTORAW("CDCDCDCDCDCDCDCDCDCDCDCD")<br />
3 WHERE key IN (50, 51);<br />
2 rows updated.<br />
SQL><br />
SQL> drop table lobdemo;<br />
Table dropped.<br />
SQL><br />
SQL><br />
SQL><br />
</source></div>
Admin