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Added information on MySQL 4.0.16 to the NULL-handling survey. (CVS 1117)

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FossilOrigin-Name: e22e3ab53a841b26984240760b0438efc83661d7
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drh
2003-11-08 12:07:01 +00:00
parent 7014aff37d
commit 000ca2b208
3 changed files with 21 additions and 12 deletions
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19
www/nulls.tcl
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@@ -1,7 +1,7 @@
#
# Run this script to generated a nulls.html output file
#
set rcsid {$Id: nulls.tcl,v 1.4 2003/08/13 11:29:24 drh Exp $}
set rcsid {$Id: nulls.tcl,v 1.5 2003/11/08 12:07:01 drh Exp $}
puts {<html>
<head>
@@ -170,10 +170,11 @@ The following table shows the results of the NULL handling experiments.
<table border=1 cellpadding=3 width="100%">
<tr><th>&nbsp&nbsp;</th>
<th>MySQL</th>
<th>MySQL<br>3.23.41</th>
<th>MySQL<br>4.0.16</th>
<th>Firebird</th>
<th>SQL Anywhere</th>
<th>Borland Interbase</th>
<th>SQL<br>Anywhere</th>
<th>Borland<br>Interbase</th>
</tr>
<tr><td>Adding anything to null gives null</td>
@@ -181,27 +182,32 @@ The following table shows the results of the NULL handling experiments.
<td valign="center" align="center" bgcolor="#a9c7a9">Yes</td>
<td valign="center" align="center" bgcolor="#a9c7a9">Yes</td>
<td valign="center" align="center" bgcolor="#a9c7a9">Yes</td>
<td valign="center" align="center" bgcolor="#a9c7a9">Yes</td>
</tr>
<tr><td>Multiplying null by zero gives null</td>
<td valign="center" align="center" bgcolor="#a9c7a9">Yes</td>
<td valign="center" align="center" bgcolor="#a9c7a9">Yes</td>
<td valign="center" align="center" bgcolor="#a9c7a9">Yes</td>
<td valign="center" align="center" bgcolor="#a9c7a9">Yes</td>
<td valign="center" align="center" bgcolor="#a9c7a9">Yes</td>
</tr>
<tr><td>nulls are distinct in a UNIQUE column</td>
<td valign="center" align="center" bgcolor="#a9c7a9">Yes</td>
<td valign="center" align="center" bgcolor="#a9c7a9">Yes</td>
<td valign="center" align="center" bgcolor="#a9c7a9">Yes</td>
<td valign="center" align="center" bgcolor="#aaaad2">(Note 4)</td>
<td valign="center" align="center" bgcolor="#aaaad2">(Note 4)</td>
</tr>
<tr><td>nulls are distinct in SELECT DISTINCT</td>
<td valign="center" align="center" bgcolor="#c7a9a9">No</td>
<td valign="center" align="center" bgcolor="#c7a9a9">No</td>
<td valign="center" align="center" bgcolor="#c7a9a9">No (Note 1)</td>
<td valign="center" align="center" bgcolor="#c7a9a9">No</td>
<td valign="center" align="center" bgcolor="#c7a9a9">No</td>
</tr>
<tr><td>nulls are distinct in a UNION</td>
<td valign="center" align="center" bgcolor="#aaaad2">(Note 3)</td>
<td valign="center" align="center" bgcolor="#c7a9a9">No</td>
<td valign="center" align="center" bgcolor="#c7a9a9">No (Note 1)</td>
<td valign="center" align="center" bgcolor="#c7a9a9">No</td>
<td valign="center" align="center" bgcolor="#c7a9a9">No</td>
@@ -210,6 +216,7 @@ The following table shows the results of the NULL handling experiments.
<td valign="center" align="center" bgcolor="#a9c7a9">Yes</td>
<td valign="center" align="center" bgcolor="#a9c7a9">Yes</td>
<td valign="center" align="center" bgcolor="#a9c7a9">Yes</td>
<td valign="center" align="center" bgcolor="#a9c7a9">Yes</td>
<td valign="center" align="center" bgcolor="#aaaad2">(Note 5)</td>
</tr>
<tr><td>"null OR true" is true</td>
@@ -217,12 +224,14 @@ The following table shows the results of the NULL handling experiments.
<td valign="center" align="center" bgcolor="#a9c7a9">Yes</td>
<td valign="center" align="center" bgcolor="#a9c7a9">Yes</td>
<td valign="center" align="center" bgcolor="#a9c7a9">Yes</td>
<td valign="center" align="center" bgcolor="#a9c7a9">Yes</td>
</tr>
<tr><td>"not (null AND false)" is true</td>
<td valign="center" align="center" bgcolor="#c7a9a9">No</td>
<td valign="center" align="center" bgcolor="#a9c7a9">Yes</td>
<td valign="center" align="center" bgcolor="#a9c7a9">Yes</td>
<td valign="center" align="center" bgcolor="#a9c7a9">Yes</td>
<td valign="center" align="center" bgcolor="#a9c7a9">Yes</td>
</tr>
</table>
@@ -237,7 +246,7 @@ and from UNION.</td>
<td>Test data unavailable.</td>
</tr>
<tr><td>3.&nbsp;</td>
<td>The version of MySQL tested (3.23.41) does not support UNION.</td>
<td>MySQL version 3.23.41 does not support UNION.</td>
</tr>
<tr><td>4.&nbsp;</td>
<td>SQL Anywhere and Borland Interbase