86 lines
5.2 KiB
HTML
86 lines
5.2 KiB
HTML
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<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE html
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PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<html lang="en-us" xml:lang="en-us">
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<meta name="DC.Title" content="List of values" />
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<meta name="abstract" content="A list of values is one or more values that can be specified for a parameter." />
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<meta name="description" content="A list of values is one or more values that can be specified for a parameter." />
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<meta name="DC.Relation" scheme="URI" content="rbam6parmvalues.htm" />
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<meta name="copyright" content="(C) Copyright IBM Corporation 1998, 2006" />
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<link rel="stylesheet" type="text/css" href="./ic.css" />
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<title>List of values</title>
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</head>
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<body id="rbam6vallsts"><a name="rbam6vallsts"><!-- --></a>
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<!-- Java sync-link --><script language="Javascript" src="../rzahg/synch.js" type="text/javascript"></script>
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<h1 class="topictitle1">List of values</h1>
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<div><p>A list of values is one or more values that can be specified for
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a parameter. </p>
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<div class="section"><p>Not all parameters can accept a list of values. A <em>list parameter</em> can
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be defined to accept a specific set of multiple values that can be of one
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or more types. Values in the list must be separated by one or more blanks.
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Each list of values is enclosed by parentheses, indicating that the list is
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treated as a single parameter. Parentheses are used even when a parameter
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is specified in positional form. To determine whether a list can be specified
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for a parameter, and what kind of list it can be, refer to the parameter description
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under the appropriate command description.</p>
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<p>A list parameter can be defined
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to accept a list of multiple like values (a simple list) or a list of multiple
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unlike values (a mixed list). Each value in either kind of list is called
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a <em>list element</em>. List elements can be constants, variables, or other
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lists; expressions are not allowed.</p>
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<ul><li>A <em>simple list</em> parameter accepts one or more values of the type
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allowed by a parameter. For example, (RSMITH BJONES TBROWN) is a simple list
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of three user names.</li>
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<li>A <em>mixed list</em> parameter accepts a fixed set of separately defined
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values that are in a specific order. Each value can be defined with specific
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characteristics such as type and range. For example, LEN(5 2) is a mixed list
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in which the first element (5) gives the length of a field and the second
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element (2) gives the number of decimal positions in that field.</li>
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<li>For many parameters defined to accept lists, predefined single values
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can be specified in place of a list of values. One of these single values
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can be the default value, which can be either specified or assumed if no list
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is specified for a simple or mixed list. To determine what defaults are accepted
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for a given list parameter, refer to the description of the parameter in the
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description of the command for which the parameter is defined and used. <p> <strong>Note:</strong> *N
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cannot be specified in a simple list, but it can be specified in a mixed list.
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Also, individual parameters passed on the CALL and CALLPRC commands cannot
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be lists.</p>
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</li>
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<li>The maximum level of nesting of lists inside lists is three, including
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the first. These are indicated by three nested levels of parentheses.</li>
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</ul>
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<p>The following are examples of lists: <img src="rbam6506.gif" alt="art - examples of lists" /></p>
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<p>The last two examples contain
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two lists nested inside a list: the first list contains values of A and B,
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and the second list contains values of 1 and 2. The space between the two
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nested lists is not required. Blanks are the separators between the values
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inside each nested list, and the sets of parentheses group the nested values
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into larger lists.</p>
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</div>
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</div>
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<div>
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<div class="familylinks">
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<div class="parentlink"><strong>Parent topic:</strong> <a href="rbam6parmvalues.htm" title="A parameter value is user-supplied information used during the running of a command.">Parameter values</a></div>
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</div>
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<div class="relref"><strong>Related reference</strong><br />
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<div><a href="rbam6parms.htm" title="Most CL commands have one or more parameters that specify the objects and values used to run the commands.">Command parameters</a></div>
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</div>
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</div>
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</body>
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</html>
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