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Oracle PL/SQL Tutorial/Function Procedure Packages/EXEC - История изменений
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в 13:45, 26 мая 2010
2010-05-26T13:45:46Z
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Admin: 1 версия
2010-05-26T10:11:39Z
<p>1 версия</p>
<p><b>Новая страница</b></p><div>== Demmonstrate the creation and execution of a simple PL/SQL procedure.==<br />
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<br />
<!-- start source code --><br />
<br />
<source lang="sql"><br />
SQL><br />
SQL> create or replace procedure add_up<br />
2 (p1 in number DEFAULT 0,<br />
3 p2 in number DEFAULT 0,<br />
4 p3 out number)<br />
5 as<br />
6 begin<br />
7 p3 := p1 + p2;<br />
8 end;<br />
9 /<br />
Procedure created.<br />
SQL><br />
SQL> show errors<br />
No errors.<br />
SQL><br />
SQL> -- execute from SQL*Plus:<br />
SQL><br />
SQL> var x number<br />
SQL> exec add_up(10,10,:x)<br />
PL/SQL procedure successfully completed.<br />
SQL> print x<br />
X<br />
----------<br />
20<br />
SQL><br />
SQL></source><br />
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<br />
<br />
== Use EXEC to call a procedure in a package==<br />
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<br />
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<!-- start source code --><br />
<br />
<source lang="sql"><br />
SQL><br />
SQL><br />
SQL> CREATE OR REPLACE PACKAGE calc_pkg<br />
2 IS<br />
3 PROCEDURE calculate_totals;<br />
4 END calc_pkg;<br />
5 /<br />
Package created.<br />
SQL><br />
SQL> CREATE OR REPLACE PACKAGE BODY calc_pkg<br />
2 IS<br />
3 PROCEDURE calculate_totals<br />
4 IS<br />
5 BEGIN<br />
6 RAISE VALUE_ERROR;<br />
7 EXCEPTION<br />
8 WHEN OTHERS<br />
9 THEN<br />
10 DBMS_OUTPUT.put_line("Current line number "|| $$plsql_line);<br />
11 DBMS_OUTPUT.put_line("Failed in program "|| $$plsql_unit);<br />
12 END calculate_totals;<br />
13 END calc_pkg;<br />
14 /<br />
Package body created.<br />
SQL><br />
SQL> EXEC calc_pkg.calculate_totals;<br />
PL/SQL procedure successfully completed.<br />
SQL></source></div>
Admin