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<FONT COLOR="#000077">Teach Yourself SQL in 21 Days, Second Edition</FONT></H1>
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<H1><FONT COLOR="#000077">Week 1 In Review</FONT></H1>
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<P>After setting the stage with a quick survey of database history and theory, Week
1 moved right into the heart of SQL with the <TT>SELECT</TT> statement. The following
summary of the <TT>SELECT</TT> statement syntax includes cross-references to the
days on which the particular aspect was covered:
<UL>
<LI><TT>SELECT [DISTINCT | ALL]</TT> (Day 2)--Columns (Day 1), Functions (Day 4)
<P>
<LI><TT>FROM</TT> (Day 2)--Tables or Views (Day 1), Aggregate Functions (Day 4)
<P>
<LI><TT>WHERE</TT> (Day 5)--Condition (Day 3), Join (Day 6), Subquery (Day 7)
<P>
<LI><TT>GROUP BY</TT> (Day 5)--Columns (Day 3)
<P>
<LI><TT>HAVING</TT> (Day 5)--Aggregate Function (Day 4)
<P>
<LI><TT>UNION | INTERSECT</TT> (Day 3)--(Placed between two <TT>SELECT</TT> statements)
<P>
<LI><TT>ORDER BY</TT> (Day 5)--Columns (Day 1)
</UL>
<P>If you build a million queries in your programming career, more than 80 percent
of them will begin with <TT>SELECT</TT>. The other 20 percent will fall into the
categories covered in Week 2.
<H2><FONT COLOR="#000077">Preview</FONT></H2>
<P>The new skills you learn in Week 2 cover database administration. During Week
2 you will learn how to
<UL>
<LI>Create and destroy tables
<P>
<LI>Assign permissions to your friends and prevent your enemies from even looking
at your data
<P>
<LI>Update and delete data in tables
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