<!-- Presentation generated by Internet Assistant for Microsoft PowerPoint 97 -->
<HTML>
<HEAD>
<meta name="GENERATOR" content="Microsoft Internet Assistant for Microsoft PowerPoint 97">
<TITLE>MySQLs EXPLAIN PLAN</TITLE>
</HEAD>
<BODY >
<CENTER>
<TABLE WIDTH=100%>
<TR> <TD WIDTH=100% ALIGN=CENTER>
<A HREF="sld001.htm">First</A>
<A HREF="sld010.htm">Previous</A>
<A HREF="sld012.htm">Next</A>
<A HREF="sld102.htm">Last</A>
<A HREF="index.htm">Index</A>
<A HREF="dbi.perl.org">Home</A>
<A HREF="tsld011.htm">Text</A>
</TD> </TR>
<TR> <TD WIDTH=100% ALIGN=CENTER>
<IMG SRC="img011.gif" usemap="#Objmap" WIDTH=800 HEIGHT=600 BORDER=0>
</TD> </TR>
</TABLE>
<P>Slide 11 of 102</P>
</CENTER>
<!-- <UL>
<H2>MySQLs EXPLAIN PLAN</H2>
</UL></P>
<P><UL>
<LI><H2>To generate a plan:
</H2>
<UL>
EXPLAIN SELECT tt.TicketNumber, tt.TimeIn,
<BR><BR> tt.ProjectReference, tt.EstimatedShipDate,
<BR> tt.ActualShipDate, tt.ClientID,
<BR> tt.ServiceCodes, tt.RepetitiveID,
<BR> tt.CurrentProcess, tt.CurrentDPPerson,
<BR> tt.RecordVolume, tt.DPPrinted, et.COUNTRY,
<BR> et_1.COUNTRY, do.CUSTNAME
<BR> FROM tt, et, et AS et_1, do
<BR> WHERE tt.SubmitTime IS NULL
<BR> AND tt.ActualPC = et.EMPLOYID
<BR> AND tt.AssignedPC = et_1.EMPLOYID
<BR> AND tt.ClientID = do.CUSTNMBR;
<UL>
<LI>
</UL></UL></UL><UL>
<LI><H2>The plan is described using results like this:
</H2>
<UL>
TABLE TYPE POSSIBLE_KEYS KEY KEY_LEN REF ROWS EXTRA
<BR><BR>et ALL PRIMARY NULL NULL NULL 74
<BR>tt ref AssignedPC,ClientID,ActualPC ActualPC 15 et.EMPLOYID 52 where used
<BR>et_1 eq_ref PRIMARY PRIMARY 15 tt.AssignedPC 1
<BR>do eq_ref PRIMARY PRIMARY 15 tt.ClientID 1</UL></UL></P>
<P> -->
</Body>
</HTML>