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setdatabasefloat.html

setdatabasefloat.html 2.71 KB

<html><head><title>SetDatabaseFloat</title></head>
<body bgcolor="#EFF1F0" link="#3A3966" vlink="#000000" alink="#000000">
SetDatabaseFloat()
Syntax<blockquote>
SetDatabaseFloat(#Database, StatementIndex, Value.f)</blockquote>

</blockquote>
Description <blockquote>

Set a float as a bind variable for the next call to <a href="databasequery.html">DatabaseQuery()</a> or <a href="databaseupdate.html">DatabaseUpdate()</a>.

</blockquote>Parameters<blockquote>
<style type="text/css">
table.parameters { border-spacing: 0px; border-style: none; border-collapse: collapse; }
table.parameters td { border-width: 1px; padding: 6px; border-style: solid; border-color: gray; vertical-align: top; font-family:Arial; font-size:10pt; }
</style>
<table width="90%" class="parameters">
<tr><td width="10%">#Database</td>
<td width="90%"> 
The database to use.

</td></tr>
<tr><td>StatementIndex</td>
<td> 
The index of the bind variable within the statement. The first variable has index 0.

</td></tr>
<tr><td>Value.f</td>
<td> 
The value to use for the bind variable.

</td></tr>
</table>
</blockquote>Return value<blockquote>
None.

</blockquote>Remarks<blockquote>

Bind variables make constructing statements with variable data easier, because there is no 
need to add the data into the string. The statement string can contain the placeholders and 
the data is bound before executing the statement. This method also avoids vulnerabilities 
due to possible SQL injection which can be done if data (such as strings) is directly 
inserted in the statement text. Since the statement only contains the placeholder, there 
is no danger. 
 
 
See <a href="databasequery.html">DatabaseQuery()</a> and <a href="databaseupdate.html">DatabaseUpdate()</a> for examples how to specify bind variables in an 
SQL statement.

</blockquote>See Also<blockquote>

<a href="setdatabasestring.html">SetDatabaseString()</a>, <a href="setdatabaselong.html">SetDatabaseLong()</a>, <a href="setdatabasequad.html">SetDatabaseQuad()</a>, <a href="setdatabasedouble.html">SetDatabaseDouble()</a> 
<a href="setdatabaseblob.html">SetDatabaseBlob()</a>, <a href="setdatabasenull.html">SetDatabaseNull()</a>, <a href="databasequery.html">DatabaseQuery()</a>, <a href="databaseupdate.html">DatabaseUpdate()</a>

</Blockquote>Supported OS <Blockquote>All</Blockquote><center><- <a href=setdatabasedouble.html>SetDatabaseDouble()</a> - <a href="index.html">Database Index</a> - <a href="setdatabaselong.html">SetDatabaseLong()</a> ->

</body></html>

一键复制编辑原始数据按行查看历史

麦壳饼提交于 2016年07月21日 13:08 +08:00 . chuci

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<html><head><title>SetDatabaseFloat</title></head>
<body bgcolor="#EFF1F0" link="#3A3966" vlink="#000000" alink="#000000">
<font face="Verdana, sans-serif" size="2"><p align="center"><b><font size="4">SetDatabaseFloat()</font></b></p>
<p><b>Syntax</b></p><blockquote>
<font color="#3A3966"><b>SetDatabaseFloat</b></font>(#Database, StatementIndex, Value.f)</blockquote>

</blockquote>
<b>Description</b><br><blockquote>

Set a float as a bind variable for the next call to <a href="databasequery.html">DatabaseQuery()</a> or <a href="databaseupdate.html">DatabaseUpdate()</a>. 

</blockquote><p><b>Parameters</b></p><blockquote>
<style type="text/css">
table.parameters { border-spacing: 0px; border-style: none; border-collapse: collapse; }
table.parameters td { border-width: 1px; padding: 6px; border-style: solid; border-color: gray; vertical-align: top; font-family:Arial; font-size:10pt; }
</style>
<table width="90%" class="parameters">
<tr><td width="10%"><i>#Database</i></td>
<td width="90%"> 
The database to use. 

</td></tr>
<tr><td><i>StatementIndex</i></td>
<td> 
The index of the bind variable within the statement. The first variable has index 0. 

</td></tr>
<tr><td><i>Value.f</i></td>
<td> 
The value to use for the bind variable. 

</td></tr>
</table>
</blockquote><p><b>Return value</b></p><blockquote>
None.


</blockquote><p><b>Remarks</b></p><blockquote>

Bind variables make constructing statements with variable data easier, because there is no 
need to add the data into the string. The statement string can contain the placeholders and 
the data is bound before executing the statement. This method also avoids vulnerabilities 
due to possible SQL injection which can be done if data (such as strings) is directly 
inserted in the statement text. Since the statement only contains the placeholder, there 
is no danger. 
<br>
<br>
See <a href="databasequery.html">DatabaseQuery()</a> and <a href="databaseupdate.html">DatabaseUpdate()</a> for examples how to specify bind variables in an 
SQL statement. 

</blockquote><p><b>See Also</b></p><blockquote>

<a href="setdatabasestring.html">SetDatabaseString()</a>, <a href="setdatabaselong.html">SetDatabaseLong()</a>, <a href="setdatabasequad.html">SetDatabaseQuad()</a>, <a href="setdatabasedouble.html">SetDatabaseDouble()</a> 
<a href="setdatabaseblob.html">SetDatabaseBlob()</a>, <a href="setdatabasenull.html">SetDatabaseNull()</a>, <a href="databasequery.html">DatabaseQuery()</a>, <a href="databaseupdate.html">DatabaseUpdate()</a> 

</Blockquote><p><b>Supported OS </b><Blockquote>All</Blockquote></p><center><- <a href=setdatabasedouble.html>SetDatabaseDouble()</a> - <a href="index.html">Database Index</a> - <a href="setdatabaselong.html">SetDatabaseLong()</a> -><br><br>

</body></html>