384 lines
26 KiB
HTML
384 lines
26 KiB
HTML
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<?xml version="1.0" encoding="utf-8"?>
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
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"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<html xmlns="http://www.w3.org/1999/xhtml" lang="en-US" xml:lang="en-us">
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
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<meta name="dc.language" scheme="rfc1766" content="en-us" />
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<!-- All rights reserved. Licensed Materials Property of IBM -->
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<!-- US Government Users Restricted Rights -->
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<!-- Use, duplication or disclosure restricted by -->
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<!-- GSA ADP Schedule Contract with IBM Corp. -->
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<meta name="dc.date" scheme="iso8601" content="2005-09-19" />
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<meta name="copyright" content="(C) Copyright IBM Corporation 1998, 2006" />
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<meta name="security" content="public" />
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<meta name="Robots" content="index,follow"/>
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<meta http-equiv="PICS-Label" content='(PICS-1.1 "http://www.icra.org/ratingsv02.html" l gen true r (cz 1 lz 1 nz 1 oz 1 vz 1) "http://www.rsac.org/ratingsv01.html" l gen true r (n 0 s 0 v 0 l 0) "http://www.classify.org/safesurf/" l gen true r (SS~~000 1))' />
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<meta name="keywords" content="
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REVOKE (Function or Procedure Privileges) statement,
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REVOKE (Function or Procedure Privileges), SQL statements, ALL clause,
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ALL PRIVILEGES clause, ALTER clause, EXECUTE clause, FUNCTION clause,
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REVOKE statement, SPECIFIC clause, in REVOKE statement, specific-name, revoking,
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function, procedure, FROM clause,
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in REVOKE (Function or Procedure Privileges) statement, authorization-name,
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PUBLIC clause" />
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<title>REVOKE (Function or Procedure Privileges)</title>
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<link rel="stylesheet" type="text/css" href="ibmidwb.css" />
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<link rel="stylesheet" type="text/css" href="ic.css" />
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</head>
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<body>
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<a id="Top_Of_Page" name="Top_Of_Page"></a><!-- Java sync-link -->
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<script language = "Javascript" src = "../rzahg/synch.js" type="text/javascript"></script>
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<a name="rppro"></a>
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<h2 id="rppro"><a href="rbafzmst02.htm#ToC_1226">REVOKE (Function or Procedure Privileges)</a></h2><a id="idx3024" name="idx3024"></a><a id="idx3025" name="idx3025"></a>
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<a name="revpprc"></a>
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<p id="revpprc">This form of the REVOKE statement removes the privileges on
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a function or procedure.</p>
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<a name="wq1687"></a>
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<h3 id="wq1687"><a href="rbafzmst02.htm#ToC_1227">Invocation</a></h3>
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<p>This statement can be embedded in an application program or issued interactively.
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It is an executable statement that can be dynamically prepared.</p>
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<a name="wq1688"></a>
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<h3 id="wq1688"><a href="rbafzmst02.htm#ToC_1228">Authorization</a></h3>
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<p>The privileges held by the authorization ID of the statement must include
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at least one of the following: </p>
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<ul>
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<li>For each function or procedure identified in the statement:
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<ul>
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<li>Every privilege specified in the statement</li>
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<li>The system authority of *OBJMGT on the function or procedure</li>
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<li>The system authority *EXECUTE on the library (or directory if this is
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a Java™ routine) containing the function or procedure</li></ul></li>
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<li>Administrative authority</li></ul>
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<a name="wq1689"></a>
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<h3 id="wq1689"><a href="rbafzmst02.htm#ToC_1229">Syntax</a></h3>
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<a href="rbafzmstrppro.htm#synsrevokef"><img src="c.gif" alt="Click to skip syntax diagram" /></a>
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<a name="wq1690"></a>
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<div class="fignone" id="wq1690">
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<pre class="cgraphic"><span><img src="c.gif" alt="Read syntax diagram" longdesc="rbafzmstsyn368.htm"
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border="0" /></span><a href="#skipsyn-367"><img src="c.gif" alt="Skip visual syntax diagram"
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border="0" /></a> .-PRIVILEGES-.
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>>-REVOKE--+-ALL--+------------+-+------------------------------>
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| .-,-----------. |
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| V | |
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'---+-ALTER---+-+-----'
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'-EXECUTE-'
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.-,-----------------------------------------------------------------------.
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V |
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>--ON----+-+-+-FUNCTION-+--<span class="italic">function-name</span>--+------------------------------+-+---+-+-->
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| | '-ROUTINE--' '-(--+--------------------+--)-' | |
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| | | .-,--------------. | | |
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| | | V | | | |
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| | '---<span class="italic">parameter-type</span>-+-' | |
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| '-SPECIFIC--+-FUNCTION-+--<span class="italic">specific-name</span>-------------------------' |
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| '-ROUTINE--' |
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'-+-+-PROCEDURE-+--<span class="italic">procedure-name</span>--+------------------------------+-+-'
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| '-ROUTINE---' '-(--+--------------------+--)-' |
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| | .-,--------------. | |
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| | V | | |
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| '---<span class="italic">parameter-type</span>-+-' |
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'-SPECIFIC--+-PROCEDURE-+--<span class="italic">specific-name</span>--------------------------'
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'-ROUTINE---'
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.-,----------------------.
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V |
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>--FROM----+-<span class="italic">authorization-name</span>-+-+----------------------------><
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'-PUBLIC-------------'
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</pre>
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<a name="skipsyn-367" id="skipsyn-367"></a></div>
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<a name="wq1691"></a>
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<div class="fignone" id="wq1691">
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<pre class="cgraphic"><span><img src="c.gif" alt="Read syntax diagram" longdesc="rbafzmstsyn369.htm"
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border="0" /></span><a href="#skipsyn-368"><img src="c.gif" alt="Skip visual syntax diagram"
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border="0" /></a>parameter-type:
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|----<span class="italic">data-type</span>--+------------+----------------------------------|
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'-AS LOCATOR-'
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</pre>
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<a name="skipsyn-368" id="skipsyn-368"></a></div>
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<a name="wq1692"></a>
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<div class="fignone" id="wq1692">
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<pre class="cgraphic"><span><img src="c.gif" alt="Read syntax diagram" longdesc="rbafzmstsyn370.htm"
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border="0" /></span><a href="#skipsyn-369"><img src="c.gif" alt="Skip visual syntax diagram"
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border="0" /></a>data-type:
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|--+-<span class="italic">built-in-type</span>------+---------------------------------------|
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'-<span class="italic">distinct-type-name</span>-'
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</pre>
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<a name="skipsyn-369" id="skipsyn-369"></a></div>
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<a name="wq1693"></a>
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<div class="fignone" id="wq1693">
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<pre class="cgraphic"><span><img src="c.gif" alt="Read syntax diagram" longdesc="rbafzmstsyn371.htm"
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border="0" /></span><a href="#skipsyn-370"><img src="c.gif" alt="Skip visual syntax diagram"
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border="0" /></a>built-in-type:
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|--+-+---SMALLINT---+----------------------------------------------------------------------------------------------+--|
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| +-+-INTEGER-+--+ |
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| | '-INT-----' | |
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| '---BIGINT-----' |
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| .-(5,0)----------------------------. |
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+-+-+-DECIMAL-+-+--+----------------------------------+---------------------------------------------------------+
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| | '-DEC-----' | '-(--+------------------------+--)-' |
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| '-NUMERIC-----' '-<span class="italic">integer</span>--+-----------+-' |
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| '-<span class="italic">, integer</span>-' |
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| .-(53)----------. |
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+-+-FLOAT--+---------------+-+----------------------------------------------------------------------------------+
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| | '-(--<span class="italic">integer</span>--)-' | |
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| +-REAL---------------------+ |
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| | .-PRECISION-. | |
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| '-DOUBLE--+-----------+----' |
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| .-(1)---------------. |
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+-+-+-+-CHARACTER-+--+-------------------+--------------+--+----------------+---------------------------------+-+
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| | | '-CHAR------' '-(--+---------+--)-' | +-FOR BIT DATA---+ | |
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| | | '-<span class="italic">integer</span>-' | +-FOR SBCS DATA--+ | |
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| | '---+-+-CHARACTER-+--VARYING-+--(--+---------+--)---' +-FOR MIXED DATA-+ | |
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| | | '-CHAR------' | '-<span class="italic">integer</span>-' '-CCSID--<span class="italic">integer</span>-' | |
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| | '-VARCHAR----------------' | |
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| | .-(1M)---------------------. | |
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| '-----+-+-<span>CHARACTER</span>-+--<span>LARGE OBJECT</span>-+------+--------------------------+--+----------------+--+------------+-' |
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| | '-<span>CHAR</span>------' | '-(--+---------+--+---+--)-' +-FOR SBCS DATA--+ '-AS LOCATOR-' |
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| '-<span>CLOB</span>------------------------' '-<span class="italic">integer</span>-' +-K-+ +-FOR MIXED DATA-+ |
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| +-M-+ '-CCSID--<span class="italic">integer</span>-' |
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| '-G-' |
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| .-(1)---------------. |
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+-+-+---GRAPHIC----+-------------------+---------+--+----------------+-----------+------------------------------+
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| | | '-(--+---------+--)-' | '-CCSID--<span class="italic">integer</span>-' | |
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| | | '-<span class="italic">integer</span>-' | | |
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| | '---+-VARGRAPHIC------+--(--+---------+--)---' | |
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| | '-GRAPHIC VARYING-' '-<span class="italic">integer</span>-' | |
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| | .-(1M)---------------------. | |
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| '---DBCLOB----+--------------------------+--+----------------+--+------------+-' |
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| '-(--+---------+--+---+--)-' '-CCSID--<span class="italic">integer</span>-' '-AS LOCATOR-' |
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| '-<span class="italic">integer</span>-' +-K-+ |
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| +-M-+ |
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| '-G-' |
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| .-(1)---------------. |
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+-+-+-BINARY--+-------------------+---------+---------------------------------+---------------------------------+
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| | | '-(--+---------+--)-' | | |
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| | | '-<span class="italic">integer</span>-' | | |
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| | '-+-BINARY VARYING-+--(--+---------+--)-' | |
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| | '-VARBINARY------' '-<span class="italic">integer</span>-' | |
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| | .-(1M)---------------------. | |
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| '---+-BLOB----------------+----+--------------------------+--+------------+-' |
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| '-BINARY LARGE OBJECT-' '-(--+---------+--+---+--)-' '-AS LOCATOR-' |
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| '-<span class="italic">integer</span>-' +-K-+ |
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| +-M-+ |
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| '-G-' |
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+-+---DATE-----------------+------------------------------------------------------------------------------------+
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| | .-(--0--)-. | |
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| +-TIME--+---------+------+ |
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| | .-(--6--)-. | |
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| '-TIMESTAMP--+---------+-' |
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| .-(200)-------------. |
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+---DATALINK--+-------------------+--+----------------+---------------------------------------------------------+
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| '-(--+---------+--)-' '-CCSID--<span class="italic">integer</span>-' |
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| '-<span class="italic">integer</span>-' |
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'---ROWID-------------------------------------------------------------------------------------------------------'
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</pre>
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<a name="skipsyn-370" id="skipsyn-370"></a></div>
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<a name="synsrevokef"></a>
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<h3 id="synsrevokef"><a href="rbafzmst02.htm#ToC_1230">Description</a></h3>
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<dl class="parml">
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<dt class="bold">ALL <span class="base">or</span> ALL PRIVILEGES</dt><a id="idx3026" name="idx3026"></a><a id="idx3027" name="idx3027"></a>
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<dd>Revokes one or more function or procedure privileges from each <span class="italic">authorization-name</span>. The privileges revoked are those privileges on the
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identified functions or procedures that were granted to the <span class="italic">authorization-names</span>. Note that revoking ALL PRIVILEGES on a function
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or procedure is not the same as revoking the system authority of *ALL.
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<p>If you do not use ALL, you must use one or more of the keywords listed below.
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Each keyword revokes the privilege described.</p>
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</dd>
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<dt class="bold">ALTER </dt><a id="idx3028" name="idx3028"></a>
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<dd>Revokes the privilege to use the COMMENT statement.
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</dd>
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<dt class="bold">EXECUTE </dt><a id="idx3029" name="idx3029"></a>
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<dd>Revokes the privilege to execute a function or procedure.
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</dd>
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<dt class="bold">FUNCTION or SPECIFIC FUNCTION</dt><a id="idx3030" name="idx3030"></a>
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<dd>Identifies the function from which the privilege is revoked. The function
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must exist at the current server and it must be a user-defined function<span>, but not a function that was implicitly generated with the creation of a
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distinct type</span>. The function can be identified by its name, function signature,
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or specific name.
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<dl class="parml">
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<dt class="bold">FUNCTION <var class="pv">function-name</var> </dt>
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<dd>Identifies the function by its name. The <span class="italic">function-name</span> must identify exactly one function. The function may have any number
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of parameters defined for it. If there is more than one function of the specified
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name in the specified or implicit schema, an error is returned.
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</dd>
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<dt class="bold">FUNCTION <var class="pv">function-name (parameter-type, ...)</var></dt>
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<dd>Identifies the function by its function signature, which uniquely identifies
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the function. The <span class="italic">function-name (parameter-type, ...)</span> must identify a function with the specified function signature. The
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specified parameters must match the data types in the corresponding position
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that were specified when the function was created. The number of data types,
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and the logical concatenation of the data types is used to identify the specific
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function instance on which the privilege is to be revoked. Synonyms for data
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types are considered a match.
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<p>If <var class="pv">function-name ()</var> is specified,
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the function identified must have zero parameters.</p>
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<dl class="parml">
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<dt class="bold"><var class="pv">function-name </var></dt>
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<dd>Identifies the name of the function.
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</dd>
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<dt class="bold"><var class="pv">(parameter-type, ...)</var></dt>
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<dd>Identifies the parameters of the function.
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<p>If an unqualified distinct
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type name is specified, the database manager searches the SQL path to resolve the schema
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name for the distinct type.</p>
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<p>For data types that have a length, precision,
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or scale attribute, use one of the following:</p>
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<ul>
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<li>Empty parentheses indicate that the database manager ignores the attribute when determining
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whether the data types match. For example, DEC() will be considered a match
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for a parameter of a function defined with a data type of DEC(7,2). However,
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FLOAT cannot be specified with empty parenthesis because its parameter value
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indicates a specific data type (REAL or DOUBLE).</li>
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<li>If a specific value for a length, precision, or scale attribute is specified,
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the value must exactly match the value that was specified (implicitly or explicitly)
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in the CREATE FUNCTION statement. If the data type is FLOAT, the precision
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does not have to exactly match the value that was specified because matching
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is based on the data type (REAL or DOUBLE).</li>
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<li>If length, precision, or scale is not explicitly specified, and empty
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parentheses are not specified, the default attributes of the data type are
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implied. The implicit length must exactly match the value that was specified
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(implicitly or explicitly) in the CREATE FUNCTION statement.</li></ul>
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<p>Specifying the FOR DATA clause or CCSID clause is optional. Omission
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of either clause indicates that the database manager ignores the attribute when determining
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whether the data types match. If either clause is specified, it must match
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the value that was implicitly or explicitly specified in the CREATE FUNCTION
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statement.</p>
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</dd>
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<dt class="bold">AS LOCATOR</dt>
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<dd>Specifies that the function is defined to receive a locator for this
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parameter. If AS LOCATOR is specified, the data type must be a LOB or a distinct
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type based on a LOB.
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</dd>
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</dl>
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</dd>
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<dt class="bold">SPECIFIC FUNCTION <var class="pv">specific-name</var> <a id="idx3031" name="idx3031"></a></dt><a id="idx3032" name="idx3032"></a><a id="idx3033" name="idx3033"></a>
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<dd>Identifies the function by its specific name. The <span class="italic">specific-name</span> must identify a specific function that exists at the current
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server.
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</dd>
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</dl>
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</dd>
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<dt class="bold">PROCEDURE or SPECIFIC PROCEDURE</dt>
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<dd>Identifies the procedure from which the privilege is revoked. The <span class="italic">procedure-name</span> must identify a procedure that exists at
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the current server.
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<dl class="parml">
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<dt class="bold">PROCEDURE <var class="pv">procedure-name</var> </dt>
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<dd>Identifies the procedure by its name. The <span class="italic">procedure-name</span> must identify exactly one procedure. The procedure may have any number
|
||
|
|
of parameters defined for it. If there is more than one procedure of the specified
|
||
|
|
name in the specified or implicit schema, an error is returned.
|
||
|
|
</dd>
|
||
|
|
<dt class="bold">PROCEDURE <var class="pv">procedure-name (parameter-type, ...)</var></dt>
|
||
|
|
<dd>Identifies the procedure by its procedure signature, which uniquely
|
||
|
|
identifies the procedure. The <span class="italic">procedure-name (parameter-type,
|
||
|
|
...)</span> must identify a procedure with the specified procedure signature.
|
||
|
|
The specified parameters must match the data types in the corresponding position
|
||
|
|
that were specified when the procedure was created. The number of data types,
|
||
|
|
and the logical concatenation of the data types is used to identify the specific
|
||
|
|
procedure instance which is to be revoked. Synonyms for data types are considered
|
||
|
|
a match.
|
||
|
|
<p>If <var class="pv">procedure-name ()</var> is specified, the procedure identified
|
||
|
|
must have zero parameters.</p>
|
||
|
|
<dl class="parml">
|
||
|
|
<dt class="bold"><var class="pv">procedure-name </var></dt>
|
||
|
|
<dd>Identifies the name of the procedure.
|
||
|
|
</dd>
|
||
|
|
<dt class="bold"><var class="pv">(parameter-type, ...)</var></dt>
|
||
|
|
<dd>Identifies the parameters of the procedure.
|
||
|
|
<p>If an unqualified distinct
|
||
|
|
type name is specified, the database manager searches the SQL path to resolve the schema
|
||
|
|
name for the distinct type.</p>
|
||
|
|
<p>For data types that have a length, precision,
|
||
|
|
or scale attribute, use one of the following:</p>
|
||
|
|
<ul>
|
||
|
|
<li>Empty parentheses indicate that the database manager ignores the attribute when determining
|
||
|
|
whether the data types match. For example, DEC() will be considered a match
|
||
|
|
for a parameter of a procedure defined with a data type of DEC(7,2). However,
|
||
|
|
FLOAT cannot be specified with empty parenthesis because its parameter value
|
||
|
|
indicates a specific data type (REAL or DOUBLE).</li>
|
||
|
|
<li>If a specific value for a length, precision, or scale attribute is specified,
|
||
|
|
the value must exactly match the value that was specified (implicitly or explicitly)
|
||
|
|
in the CREATE PROCEDURE statement. If the data type is FLOAT, the precision
|
||
|
|
does not have to exactly match the value that was specified because matching
|
||
|
|
is based on the data type (REAL or DOUBLE).</li>
|
||
|
|
<li>If length, precision, or scale is not explicitly specified, and empty
|
||
|
|
parentheses are not specified, the default attributes of the data type are
|
||
|
|
implied. The implicit length must exactly match the value that was specified
|
||
|
|
(implicitly or explicitly) in the CREATE PROCEDURE statement.</li></ul>
|
||
|
|
<p>Specifying the FOR DATA clause or CCSID clause is optional. Omission
|
||
|
|
of either clause indicates that the database manager ignores the attribute when determining
|
||
|
|
whether the data types match. If either clause is specified, it must match
|
||
|
|
the value that was implicitly or explicitly specified in the CREATE PROCEDURE
|
||
|
|
statement.</p>
|
||
|
|
</dd>
|
||
|
|
<dt class="bold">AS LOCATOR</dt>
|
||
|
|
<dd>Specifies that the procedure is defined to receive a locator for this
|
||
|
|
parameter. If AS LOCATOR is specified, the data type must be a LOB or a distinct
|
||
|
|
type based on a LOB.
|
||
|
|
</dd>
|
||
|
|
</dl>
|
||
|
|
</dd>
|
||
|
|
<dt class="bold">SPECIFIC PROCEDURE <var class="pv">specific-name</var> </dt><a id="idx3034" name="idx3034"></a><a id="idx3035" name="idx3035"></a><a id="idx3036" name="idx3036"></a>
|
||
|
|
<dd>Identifies the procedure by its specific name. The <span class="italic">specific-name</span> must identify a specific procedure that exists at the current
|
||
|
|
server.
|
||
|
|
</dd>
|
||
|
|
</dl>
|
||
|
|
</dd>
|
||
|
|
<dt class="bold">FROM </dt><a id="idx3037" name="idx3037"></a>
|
||
|
|
<dd>Identifies from whom the privileges are revoked.
|
||
|
|
<dl class="parml">
|
||
|
|
<dt class="bold"><var class="pv">authorization-name,...</var> </dt><a id="idx3038" name="idx3038"></a>
|
||
|
|
<dd>Lists one or more authorization IDs. Do not specify the same <span class="italic">authorization-name</span> more than once.
|
||
|
|
</dd>
|
||
|
|
<dt class="bold">PUBLIC </dt><a id="idx3039" name="idx3039"></a>
|
||
|
|
<dd>Revokes the specified privileges from PUBLIC.
|
||
|
|
</dd>
|
||
|
|
</dl>
|
||
|
|
</dd>
|
||
|
|
</dl>
|
||
|
|
<a name="wq1694"></a>
|
||
|
|
<h3 id="wq1694"><a href="rbafzmst02.htm#ToC_1231">Notes</a></h3>
|
||
|
|
<p><span class="bold">Multiple grants:</span> If you revoke a privilege on a function
|
||
|
|
or procedure, it nullifies any grant of the privilege on that function or
|
||
|
|
procedure, regardless of who granted it.</p>
|
||
|
|
<p><span class="bold">Revoking WITH GRANT OPTION:</span> The only way to revoke
|
||
|
|
the WITH GRANT OPTION is to revoke ALL.</p>
|
||
|
|
<p><span class="bold">Privilege warning:</span> Revoking a specific privilege
|
||
|
|
from a user does not necessarily prevent that user from performing an action
|
||
|
|
that requires that privilege. For example, the user may still have the privilege
|
||
|
|
through PUBLIC or administrative privileges.</p>
|
||
|
|
<p><span class="bold">Corresponding system authorities:</span> When a function
|
||
|
|
or procedure privilege is revoked, the corresponding system authorities are
|
||
|
|
revoked. For information on the system authorities that correspond to SQL
|
||
|
|
privileges see <a href="rbafzmstgntprc.htm#gntprc">GRANT (Function or Procedure Privileges)</a>.</p>
|
||
|
|
<p>Privileges revoked from either an SQL or external function or procedure
|
||
|
|
are revoked from its associated program (*PGM) or service program (*SRVPGM)
|
||
|
|
object. Privileges revoked from a Java external function or procedure are
|
||
|
|
revoked from the associated class file or jar file. If the associated program,
|
||
|
|
service program, class file, or jar file is not found when the revoke is executed,
|
||
|
|
an error is returned.</p>
|
||
|
|
<p><span class="bold">Syntax alternatives:</span> The following keywords are synonyms
|
||
|
|
supported for compatibility to prior releases. These keywords are non-standard
|
||
|
|
and should not be used:</p>
|
||
|
|
<ul>
|
||
|
|
<li>The keyword RUN can be used as a synonym for EXECUTE.</li></ul>
|
||
|
|
<a name="wq1695"></a>
|
||
|
|
<h3 id="wq1695"><a href="rbafzmst02.htm#ToC_1232">Example</a></h3>
|
||
|
|
<p>Revoke the EXECUTE privilege on procedure PROCA from PUBLIC. </p>
|
||
|
|
<pre class="xmp"> <span class="bold">REVOKE EXECUTE</span>
|
||
|
|
<span class="bold">ON PROCEDURE</span> PROCA
|
||
|
|
<span class="bold">FROM PUBLIC</span></pre><a id="idx3040" name="idx3040"></a><a id="idx3041" name="idx3041"></a>
|
||
|
|
<hr /><br />
|
||
|
|
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||
|
|
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|
||
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|
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|
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