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2.0.3 (CVS 287)

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FossilOrigin-Name: 75e90cf09b64ee1fcb39a711fc9ac6d3d2b849a5
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drh
2001-10-13 02:59:08 +00:00
parent 99fcd718e1
commit bf4133cba1
15 changed files with 350 additions and 116 deletions
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25
www/lang.tcl
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@@ -1,7 +1,7 @@
#
# Run this Tcl script to generate the sqlite.html file.
#
set rcsid {$Id: lang.tcl,v 1.11 2001/10/08 13:22:33 drh Exp $}
set rcsid {$Id: lang.tcl,v 1.12 2001/10/13 02:59:10 drh Exp $}
puts {<html>
<head>
@@ -357,14 +357,21 @@ subcomponent of most other commands.</p>
highest to lowest precedence:</p>
<blockquote><pre>
<font color="#2c2cf0"><big>* /
<font color="#2c2cf0"><big>* / %
+ -
&lt;&lt; &gt;&gt; &amp; |
&lt; &lt;= &gt; &gt;=
= == != &lt;&gt; </big>IN
AND
OR</font>
</pre></blockquote>
<p>Supported unary operaters are these:</p>
<blockquote><pre>
<font color="#2c2cf0"><big>- + ! ~</big></font>
</pre></blockquote>
<p>Any SQLite value can be used as part of an expression.
For arithmetic operations, integers are treated as integers.
Strings are first converted to real numbers using <b>atof()</b>.
@@ -437,7 +444,7 @@ functions:</p>
<blockquote><pre>
<font color="#2c2cf0"><big>count min max sum
avg length substr</big></font>
avg length substr abs round</big></font>
</pre></blockquote>
<p>
@@ -445,12 +452,20 @@ The functions <b>count</b>, <b>sum</b>, and <b>avg</b> and the functions
<b>min</b> and <b>max</b> used with only one argument are all aggregate
functions. This means that they are computed across all rows of the result.
The functions <b>min</b> and <b>max</b>
with two or more arguments and the
functions <b>length</b> and <b>substr</b>
with two or more arguments and all other functions
are non-aggregates. Non-aggregate functions
are computed separately for each row of the result.
</p>
<p>
The <b>round</b> function can take either 1 or 2 arguments. The
first argument is the floating point value that is rounded. The
second argument is the number of digits to the right of the
decimal point to preserve. If the second argument is omitted,
zero is assumed. So round(1.23456,2) is 1.23 and
round(12.34,0) and round(12.34) both evaluate to 12.
</p>
<p>
The "<b>count(*)</b>" syntax is supported but
"<b>count(distinct</b> <i>COLUMN-NAME</i><b>)</b>" is not.