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regexprhelp.htm
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<div class=Section1>
<h1><a name="ismain-concepts_66"><span style='font-size:12.0pt;mso-bidi-font-size:
24.0pt;font-family:Verdana'>Regular expression operators</span></a><span
style='font-size:12.0pt;mso-bidi-font-size:24.0pt;font-family:Verdana'><o:p></o:p></span></h1>
<h2><a name="H2_126334010"></a><span style='font-size:8.0pt;mso-bidi-font-size:
18.0pt;font-family:Verdana'>The rules for using regular expression operators
are:<o:p></o:p></span></h2>
<ul type=disc>
<li class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
mso-list:l0 level1 lfo3;tab-stops:list .5in'><span style='font-size:8.0pt;
mso-bidi-font-size:12.0pt;font-family:Verdana'>When making a query, the
asterisk (*), period (.) and question mark (?) behave as they do in
Windows. The asterisk (*) matches any number of characters. The period (.)
matches end of string. The question mark (?) matches any single character.<o:p></o:p></span></li>
<li class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
mso-list:l0 level1 lfo3;tab-stops:list .5in'><span style='font-size:8.0pt;
mso-bidi-font-size:12.0pt;font-family:Verdana'>Any character except
asterisk (*), period (.), question mark (?), and vertical bar (|) defaults
to matching itself.<o:p></o:p></span></li>
<li class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
mso-list:l0 level1 lfo3;tab-stops:list .5in'><span style='font-size:8.0pt;
mso-bidi-font-size:12.0pt;font-family:Verdana'>Regular expressions can be
enclosed in matching quotation marks (" "), and must be
enclosed in quotation marks if they contain a space or closing parenthesis
( ) ).<o:p></o:p></span></li>
</ul>
<p><span style='font-size:8.0pt;mso-bidi-font-size:12.0pt;font-family:Verdana'>When
preceded by a vertical bar (|), the following characters have special meaning:<o:p></o:p></span></p>
<table border=0 cellpadding=0 style='mso-cellspacing:1.5pt;mso-padding-alt:
0in 0in 0in 0in'>
<tr>
<td style='padding:.75pt .75pt .75pt .75pt'>
<p class=MsoNormal align=center style='text-align:center'><b><span
style='font-size:8.0pt;mso-bidi-font-size:12.0pt;font-family:Verdana'>Character<o:p></o:p></span></b></p>
</td>
<td style='padding:.75pt .75pt .75pt .75pt'>
<p class=MsoNormal align=center style='text-align:center'><b><span
style='font-size:8.0pt;mso-bidi-font-size:12.0pt;font-family:Verdana'>Description<o:p></o:p></span></b></p>
</td>
</tr>
<tr>
<td style='padding:.75pt .75pt .75pt .75pt'>
<p class=MsoNormal><span style='font-size:8.0pt;mso-bidi-font-size:12.0pt;
font-family:Verdana'> (<o:p></o:p></span></p>
</td>
<td style='padding:.75pt .75pt .75pt .75pt'>
<p class=MsoNormal><span style='font-size:8.0pt;mso-bidi-font-size:12.0pt;
font-family:Verdana'>Opens a group. Must be followed by a matching closing
parenthesis ( ) ).<o:p></o:p></span></p>
</td>
</tr>
<tr>
<td style='padding:.75pt .75pt .75pt .75pt'>
<p class=MsoNormal><span style='font-size:8.0pt;mso-bidi-font-size:12.0pt;
font-family:Verdana'> )<o:p></o:p></span></p>
</td>
<td style='padding:.75pt .75pt .75pt .75pt'>
<p class=MsoNormal><span style='font-size:8.0pt;mso-bidi-font-size:12.0pt;
font-family:Verdana'>Closes a group. Must be preceded by a matching opening
parenthesis ( ( ).<o:p></o:p></span></p>
</td>
</tr>
<tr>
<td style='padding:.75pt .75pt .75pt .75pt'>
<p class=MsoNormal><span style='font-size:8.0pt;mso-bidi-font-size:12.0pt;
font-family:Verdana'> [<o:p></o:p></span></p>
</td>
<td style='padding:.75pt .75pt .75pt .75pt'>
<p class=MsoNormal><span style='font-size:8.0pt;mso-bidi-font-size:12.0pt;
font-family:Verdana'>Opens a character class. Must be followed by a matching
closing bracket (]).<o:p></o:p></span></p>
</td>
</tr>
<tr>
<td style='padding:.75pt .75pt .75pt .75pt'>
<p class=MsoNormal><span style='font-size:8.0pt;mso-bidi-font-size:12.0pt;
font-family:Verdana'> ]<o:p></o:p></span></p>
</td>
<td style='padding:.75pt .75pt .75pt .75pt'>
<p class=MsoNormal><span style='font-size:8.0pt;mso-bidi-font-size:12.0pt;
font-family:Verdana'>Closes a character class. Must be preceded by a matching
opening bracket ([).<o:p></o:p></span></p>
</td>
</tr>
<tr>
<td style='padding:.75pt .75pt .75pt .75pt'>
<p class=MsoNormal><span style='font-size:8.0pt;mso-bidi-font-size:12.0pt;
font-family:Verdana'> {<o:p></o:p></span></p>
</td>
<td style='padding:.75pt .75pt .75pt .75pt'>
<p class=MsoNormal><span style='font-size:8.0pt;mso-bidi-font-size:12.0pt;
font-family:Verdana'>Opens a counted match. Must be followed by a matching
closing brace (}).<o:p></o:p></span></p>
</td>
</tr>
<tr>
<td style='padding:.75pt .75pt .75pt .75pt'>
<p class=MsoNormal><span style='font-size:8.0pt;mso-bidi-font-size:12.0pt;
font-family:Verdana'> }<o:p></o:p></span></p>
</td>
<td style='padding:.75pt .75pt .75pt .75pt'>
<p class=MsoNormal><span style='font-size:8.0pt;mso-bidi-font-size:12.0pt;
font-family:Verdana'>Closes a counted match. Must be preceded by a matching
opening brace ({).<o:p></o:p></span></p>
</td>
</tr>
<tr>
<td style='padding:.75pt .75pt .75pt .75pt'>
<p class=MsoNormal><span style='font-size:8.0pt;mso-bidi-font-size:12.0pt;
font-family:Verdana'> ,<o:p></o:p></span></p>
</td>
<td style='padding:.75pt .75pt .75pt .75pt'>
<p class=MsoNormal><span style='font-size:8.0pt;mso-bidi-font-size:12.0pt;
font-family:Verdana'>Separates OR clauses.<o:p></o:p></span></p>
</td>
</tr>
<tr>
<td style='padding:.75pt .75pt .75pt .75pt'>
<p class=MsoNormal><span style='font-size:8.0pt;mso-bidi-font-size:12.0pt;
font-family:Verdana'> *<o:p></o:p></span></p>
</td>
<td style='padding:.75pt .75pt .75pt .75pt'>
<p class=MsoNormal><span style='font-size:8.0pt;mso-bidi-font-size:12.0pt;
font-family:Verdana'>Matches zero or more occurrences of the preceding
expression.<o:p></o:p></span></p>
</td>
</tr>
<tr>
<td style='padding:.75pt .75pt .75pt .75pt'>
<p class=MsoNormal><span style='font-size:8.0pt;mso-bidi-font-size:12.0pt;
font-family:Verdana'> ?<o:p></o:p></span></p>
</td>
<td style='padding:.75pt .75pt .75pt .75pt'>
<p class=MsoNormal><span style='font-size:8.0pt;mso-bidi-font-size:12.0pt;
font-family:Verdana'>Matches zero or one occurrence of the preceding
expression.<o:p></o:p></span></p>
</td>
</tr>
<tr>
<td style='padding:.75pt .75pt .75pt .75pt'>
<p class=MsoNormal><span style='font-size:8.0pt;mso-bidi-font-size:12.0pt;
font-family:Verdana'> +<o:p></o:p></span></p>
</td>
<td style='padding:.75pt .75pt .75pt .75pt'>
<p class=MsoNormal><span style='font-size:8.0pt;mso-bidi-font-size:12.0pt;
font-family:Verdana'>Matches one or more occurrences of the preceding
expression.<o:p></o:p></span></p>
</td>
</tr>
<tr>
<td style='padding:.75pt .75pt .75pt .75pt'>
<p class=MsoNormal><span style='font-size:8.0pt;mso-bidi-font-size:12.0pt;
font-family:Verdana'>All else<o:p></o:p></span></p>
</td>
<td style='padding:.75pt .75pt .75pt .75pt'>
<p class=MsoNormal><span style='font-size:8.0pt;mso-bidi-font-size:12.0pt;
font-family:Verdana'>Matches itself.<o:p></o:p></span></p>
</td>
</tr>
</table>
<h2><a name="H2_126335933"></a><span style='font-size:8.0pt;mso-bidi-font-size:
18.0pt;font-family:Verdana'>Brackets<o:p></o:p></span></h2>
<p><span style='font-size:8.0pt;mso-bidi-font-size:12.0pt;font-family:Verdana'>Between
brackets ([ ]), the following characters have special meaning:<o:p></o:p></span></p>
<table border=0 cellpadding=0 style='mso-cellspacing:1.5pt;mso-padding-alt:
0in 0in 0in 0in'>
<tr>
<td style='padding:.75pt .75pt .75pt .75pt'>
<p class=MsoNormal align=center style='text-align:center'><b><span
style='font-size:8.0pt;mso-bidi-font-size:12.0pt;font-family:Verdana'>Character<o:p></o:p></span></b></p>
</td>
<td style='padding:.75pt .75pt .75pt .75pt'>
<p class=MsoNormal align=center style='text-align:center'><b><span
style='font-size:8.0pt;mso-bidi-font-size:12.0pt;font-family:Verdana'>Description<o:p></o:p></span></b></p>
</td>
</tr>
<tr>
<td style='padding:.75pt .75pt .75pt .75pt'>
<p class=MsoNormal><span style='font-size:8.0pt;mso-bidi-font-size:12.0pt;
font-family:Verdana'> ^<o:p></o:p></span></p>
</td>
<td style='padding:.75pt .75pt .75pt .75pt'>
<p class=MsoNormal><span style='font-size:8.0pt;mso-bidi-font-size:12.0pt;
font-family:Verdana'>Must be the first character. Matches everything but
following classes.<o:p></o:p></span></p>
</td>
</tr>
<tr>
<td style='padding:.75pt .75pt .75pt .75pt'>
<p class=MsoNormal><span style='font-size:8.0pt;mso-bidi-font-size:12.0pt;
font-family:Verdana'> ]<o:p></o:p></span></p>
</td>
<td style='padding:.75pt .75pt .75pt .75pt'>
<p class=MsoNormal><span style='font-size:8.0pt;mso-bidi-font-size:12.0pt;
font-family:Verdana'>Closes the class. May only be preceded by a caret (^).<o:p></o:p></span></p>
</td>
</tr>
<tr>
<td style='padding:.75pt .75pt .75pt .75pt'>
<p class=MsoNormal><span style='font-size:8.0pt;mso-bidi-font-size:12.0pt;
font-family:Verdana'> -<o:p></o:p></span></p>
</td>
<td style='padding:.75pt .75pt .75pt .75pt'>
<p class=MsoNormal><span style='font-size:8.0pt;mso-bidi-font-size:12.0pt;
font-family:Verdana'>Range operator. Preceded and followed by other
characters.<o:p></o:p></span></p>
</td>
</tr>
<tr>
<td style='padding:.75pt .75pt .75pt .75pt'>
<p class=MsoNormal><span style='font-size:8.0pt;mso-bidi-font-size:12.0pt;
font-family:Verdana'>All else<o:p></o:p></span></p>
</td>
<td style='padding:.75pt .75pt .75pt .75pt'>
<p class=MsoNormal><span style='font-size:8.0pt;mso-bidi-font-size:12.0pt;
font-family:Verdana'>Matches itself, begins, or ends a range.<o:p></o:p></span></p>
</td>
</tr>
</table>
<h2><a name="H2_126336499"></a><span style='font-size:8.0pt;mso-bidi-font-size:
18.0pt;font-family:Verdana'>Braces<o:p></o:p></span></h2>
<p><span style='font-size:8.0pt;mso-bidi-font-size:12.0pt;font-family:Verdana'>Between
braces ({ }), the following meanings apply.<o:p></o:p></span></p>
<table border=0 cellpadding=0 style='mso-cellspacing:1.5pt;mso-padding-alt:
0in 0in 0in 0in'>
<tr>
<td style='padding:.75pt .75pt .75pt .75pt'>
<p class=MsoNormal align=center style='text-align:center'><b><span
style='font-size:8.0pt;mso-bidi-font-size:12.0pt;font-family:Verdana'>Character<o:p></o:p></span></b></p>
</td>
<td style='padding:.75pt .75pt .75pt .75pt'>
<p class=MsoNormal align=center style='text-align:center'><b><span
style='font-size:8.0pt;mso-bidi-font-size:12.0pt;font-family:Verdana'>Description<o:p></o:p></span></b></p>
</td>
</tr>
<tr>
<td style='padding:.75pt .75pt .75pt .75pt'>
<p class=MsoNormal><span style='font-size:8.0pt;mso-bidi-font-size:12.0pt;
font-family:Verdana'>m<o:p></o:p></span></p>
</td>
<td style='padding:.75pt .75pt .75pt .75pt'>
<p class=MsoNormal><span style='font-size:8.0pt;mso-bidi-font-size:12.0pt;
font-family:Verdana'>Matches exactly <i>m</i> occurrences of the preceding
expression (0< m < 256).<o:p></o:p></span></p>
</td>
</tr>
<tr>
<td style='padding:.75pt .75pt .75pt .75pt'>
<p class=MsoNormal><span style='font-size:8.0pt;mso-bidi-font-size:12.0pt;
font-family:Verdana'>m,<o:p></o:p></span></p>
</td>
<td style='padding:.75pt .75pt .75pt .75pt'>
<p class=MsoNormal><span style='font-size:8.0pt;mso-bidi-font-size:12.0pt;
font-family:Verdana'>Matches at least <i>m</i> occurrences of the preceding
expression (1< m < 256).<o:p></o:p></span></p>
</td>
</tr>
<tr>
<td style='padding:.75pt .75pt .75pt .75pt'>
<p class=MsoNormal><span style='font-size:8.0pt;mso-bidi-font-size:12.0pt;
font-family:Verdana'>m,n<o:p></o:p></span></p>
</td>
<td style='padding:.75pt .75pt .75pt .75pt'>
<p class=MsoNormal><span style='font-size:8.0pt;mso-bidi-font-size:12.0pt;
font-family:Verdana'>Matches between <i>m</i> and <i>n</i> occurrences of the
preceding expression, inclusive (0 < m < 256, 0 < n < 256).<o:p></o:p></span></p>
</td>
</tr>
</table>
<p><span style='font-size:8.0pt;mso-bidi-font-size:12.0pt;font-family:Verdana'>To
match the asterisk (*), the period (.), and the question mark (?), enclose them
in brackets. For example, to search for "hello?", type <b>hello[?]</b>
in the query.<o:p></o:p></span></p>
</div>
</body>
</html>