sql_functions.asp

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    <tr>
      <td align="left" valign="top">CHECKSUM</td>
      <td align="left" valign="top">&nbsp;</td>
    </tr>
    <tr>
      <td align="left" valign="top">CHECKSUM_AGG</td>
      <td align="left" valign="top">&nbsp;</td>
    </tr>
    <tr>
      <td align="left" valign="top"><a href="func_count.asp">COUNT(column)</a></td>
      <td align="left" valign="top">Returns the number of rows (without a NULL 
      value) of a column</td>
    </tr>
    <tr>
      <td align="left" valign="top"><a href="func_count_ast.asp">COUNT(*)</a></td>
      <td align="left" valign="top">Returns the number of selected rows</td>
    </tr>
    <tr>
      <td align="left" valign="top"><a href="func_count_distinct.asp">COUNT(DISTINCT column)</a></td>
      <td align="left" valign="top">Returns the number of distinct results</td>
    </tr>
    <tr>
      <td align="left" valign="top"><a href="func_first.asp">FIRST(column)</a></td>
      <td align="left" valign="top">Returns the value of the first record in a 
      specified field (not supported in SQLServer2K)</td>
    </tr>
    <tr>
      <td align="left" valign="top"><a href="func_last.asp">LAST(column)</a></td>
      <td align="left" valign="top">Returns the value of the last record in a 
      specified field (not supported in SQLServer2K)</td>
    </tr>
    <tr>
      <td align="left" valign="top"><a href="func_max.asp">MAX(column)</a></td>
      <td align="left" valign="top">Returns the highest value of a column</td>
    </tr>
    <tr>
      <td align="left" valign="top"><a href="func_min.asp">MIN(column)</a></td>
      <td align="left" valign="top">Returns the lowest value of a column</td>
    </tr>
    <tr>
      <td align="left" valign="top">STDEV(column)</td>
      <td align="left" valign="top">&nbsp;</td>
    </tr>
    <tr>
      <td align="left" valign="top">STDEVP(column)</td>
      <td align="left" valign="top">&nbsp;</td>
    </tr>
    <tr>
      <td align="left" valign="top"><a href="func_sum.asp">SUM(column)</a></td>
      <td align="left" valign="top">Returns the total sum of a column</td>
    </tr>
    <tr>
      <td align="left" valign="top">VAR(column)</td>
      <td align="left" valign="top">&nbsp;</td>
    </tr>
    <tr>
      <td align="left" valign="top">VARP(column)</td>
      <td align="left" valign="top">&nbsp;</td>
    </tr>
</table>
<br />
<hr />

<h2>Scalar functions</h2>
<p>Scalar functions operate against a single value, and return a single value 
based on the input value.</p>
<h3><b>Useful Scalar Functions in MS Access</b></h3>
<table class="ex" cellspacing="0" border="1" width="100%">
    <tr>
      <th width="35%" align="left" valign="top">Function</th>
      <th width="65%" align="left" valign="top">Description</th>
    </tr>
    <tr>
      <td align="left" valign="top">UCASE(c)</td>
      <td align="left" valign="top">Converts a field to upper case</td>
    </tr>
    <tr>
      <td align="left" valign="top">LCASE(c)</td>
      <td align="left" valign="top">Converts a field to lower case</td>
    </tr>
    <tr>
      <td align="left" valign="top">MID(c,start[,end])</td>
      <td align="left" valign="top">Extract characters from a text field</td>
    </tr>
    <tr>
      <td align="left" valign="top">LEN(c)</td>
      <td align="left" valign="top">Returns the length of a text field</td>
    </tr>
    <tr>
      <td align="left" valign="top">INSTR(c,char)</td>
      <td align="left" valign="top">Returns the numeric position of a named 
      character within a text field</td>
    </tr>
    <tr>
      <td align="left" valign="top">LEFT(c,number_of_char)</td>
      <td align="left" valign="top">Return the left part of a text field 
      requested</td>
    </tr>
    <tr>
      <td align="left" valign="top">RIGHT(c,number_of_char)</td>
      <td align="left" valign="top">Return the right part of a text field 
      requested</td>
    </tr>
    <tr>
      <td align="left" valign="top">ROUND(c,decimals)</td>
      <td align="left" valign="top">Rounds a numeric field to the number of 
      decimals specified</td>
    </tr>
    <tr>
      <td align="left" valign="top">MOD(x,y)</td>
      <td align="left" valign="top">Returns the remainder of a division 
      operation</td>
    </tr>
    <tr>
      <td align="left" valign="top">NOW()</td>
      <td align="left" valign="top">Returns the current system date</td>
    </tr>
    <tr>
      <td align="left" valign="top">FORMAT(c,format)</td>
      <td align="left" valign="top">Changes the way a field is displayed</td>
    </tr>
    <tr>
      <td align="left" valign="top">DATEDIFF(d,date1,date2)</td>
      <td align="left" valign="top">Used to perform date calculations</td>
    </tr>
</table>
<br />
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