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Overview
Comment:Improvements to the built-in function lists.
Timelines: family | ancestors | descendants | both | trunk
Files: files | file ages | folders
SHA3-256: 8ff2f2f334e7bf7bba109f381d977ca086a6be8a54c38a3aaa906396a2598065
User & Date: drh 2020-02-10 20:43:34
Context
2020-02-18
20:11
Fix the multi-column list display so that it works with documents that have both main and aux outputs. check-in: 4e47b407a1 user: drh tags: trunk
2020-02-10
20:43
Improvements to the built-in function lists. check-in: 8ff2f2f334 user: drh tags: trunk
20:33
Finish splitting the lang.in source file into separate parts. check-in: ca272c33f2 user: drh tags: trunk
Changes
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Changes to common_links.tcl. 

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<li> <a href="quickstart.html">Getting Started</a> </li>
<li> <a href="chronology.html">Prior Releases</a>
<li> <a href="lang.html">SQL Syntax</a>
<ul>
<li> <a href="pragma.html#toc">Pragmas</a>
<li> <a href="lang_corefunc.html">SQL functions</a>
<li> <a href="lang_datefunc.html">Date &amp; time functions</a>
<li> <a href="lang_aggfunc.html">Aggregate functions</a>
<li> <a href="windowfunctions.html#biwinfunc">Window functions</a>
<li> <a href="json1.html">JSON functions</a>
</ul>
</li>
<li> <a href="c3ref/intro.html">C/C++ Interface Spec</a>
<ul>
<li> <a href="cintro.html">Introduction</a>








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<li> <a href="quickstart.html">Getting Started</a> </li>
<li> <a href="chronology.html">Prior Releases</a>
<li> <a href="lang.html">SQL Syntax</a>
<ul>
<li> <a href="pragma.html#toc">Pragmas</a>
<li> <a href="lang_corefunc.html">SQL functions</a>
<li> <a href="lang_datefunc.html">Date &amp; time functions</a>
<li> <a href="lang_aggfunc.html#aggfunclist">Aggregate functions</a>
<li> <a href="windowfunctions.html#biwinfunc">Window functions</a>
<li> <a href="json1.html">JSON functions</a>
</ul>
</li>
<li> <a href="c3ref/intro.html">C/C++ Interface Spec</a>
<ul>
<li> <a href="cintro.html">Introduction</a>

Changes to pages/lang_aggfunc.in. 

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  are integers or NULL
  and an integer overflow occurs at any point during the computation.
  ^Total() never throws an integer overflow.
}
</tcl>

<fancy_format>


<tcl>
RecursiveBubbleDiagram aggregate-function-invocation
</tcl>

<p>
The aggregate functions shown below are available by default.  Additional
aggregate functions written in C may be added using the 
................................................................................

<tcl>hd_fragment aggfilter {FILTER clause on aggregate functions}</tcl>
<p>
If a FILTER clause is provided, then only rows for which the <i>expr</i> is
true are included in the aggregate.
</p>




<tcl>
set lx {}
foreach basesyntax [array names corefuncset] {
  foreach {syntax keywords desc} $corefuncset($basesyntax) break
  regexp {^[a-z_]+} $basesyntax fragment
  foreach coresyntax $syntax {
    lappend lx [list $fragment $coresyntax 0]
  }
}
hd_list_of_links {} 225 [lsort -index 1 $lx]


hd_putsnl "<hr class='xhr'>"

hd_putsnl "<dl>"


foreach basesyntax [lsort [array names corefuncset]] {
  foreach {syntax keywords desc} $corefuncset($basesyntax) break
  regsub -all {\s+} [string trim $syntax] {<br />} syntax
  regsub -all {\(([^*)]+)\)} $syntax {(<i>\1</i>)} syntax
  regsub -all {,} $syntax {</i>,<i>} syntax
  regsub -all {<i>\.\.\.</i>} $syntax {...} syntax
  regexp {^[a-z]+} $basesyntax fragment
................................................................................
    regsub -all {[^a-z]} $fragname {} fragname
    hd_fragment $fragname
    eval hd_keywords [string map {\n { }} $keywords]
  }
  hd_puts "<dt><p><b>$syntax</b></dt>"
  hd_resolve "<dd><p>$desc</dd>\n"
}

hd_putsnl "</dl>"








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  are integers or NULL
  and an integer overflow occurs at any point during the computation.
  ^Total() never throws an integer overflow.
}
</tcl>

<fancy_format>

<h1>Syntax</h1>
<tcl>
RecursiveBubbleDiagram aggregate-function-invocation
</tcl>

<p>
The aggregate functions shown below are available by default.  Additional
aggregate functions written in C may be added using the 
................................................................................

<tcl>hd_fragment aggfilter {FILTER clause on aggregate functions}</tcl>
<p>
If a FILTER clause is provided, then only rows for which the <i>expr</i> is
true are included in the aggregate.
</p>

<tcl>hd_fragment aggfunclist</tcl>
<h1>List of built-in aggregate functions</h1>

<tcl>
set lx {}
foreach basesyntax [array names corefuncset] {
  foreach {syntax keywords desc} $corefuncset($basesyntax) break
  regexp {^[a-z_]+} $basesyntax fragment
  foreach coresyntax $syntax {
    lappend lx [list $fragment $coresyntax 0]
  }
}
hd_list_of_links {} 225 [lsort -index 1 $lx]
</tcl>


<h1>Descriptions of built-in aggregate functions</h1>
<dl>

<tcl>
foreach basesyntax [lsort [array names corefuncset]] {
  foreach {syntax keywords desc} $corefuncset($basesyntax) break
  regsub -all {\s+} [string trim $syntax] {<br />} syntax
  regsub -all {\(([^*)]+)\)} $syntax {(<i>\1</i>)} syntax
  regsub -all {,} $syntax {</i>,<i>} syntax
  regsub -all {<i>\.\.\.</i>} $syntax {...} syntax
  regexp {^[a-z]+} $basesyntax fragment
................................................................................
    regsub -all {[^a-z]} $fragname {} fragname
    hd_fragment $fragname
    eval hd_keywords [string map {\n { }} $keywords]
  }
  hd_puts "<dt><p><b>$syntax</b></dt>"
  hd_resolve "<dd><p>$desc</dd>\n"
}
</tcl>
</dl>

Changes to pages/lang_corefunc.in. 

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  reversed in the like() function relative to the infix [LIKE] operator.
  X is the pattern and Y is the string to match against that pattern.
  Hence, the following expressions are equivalent:
  <blockquote><pre>
     name LIKE '%neon%'
     like('%neon%',name)
  </pre></blockquote>
  ^The [sqlite3_create_function()] interface can be used to override the
  like() function and thereby change the operation of the
  [LIKE] operator.  When overriding the like() function, it may be important
  to override both the two and three argument versions of the like() 
  function. Otherwise, different code may be called to implement the
  [LIKE] operator depending on whether or not an ESCAPE clause was 
  specified.
}
................................................................................
  [sqlite3_blob_open() | incremental BLOB I/O].
  ^This SQL function is implemented using the [sqlite3_result_zeroblob()]
  routine from the C/C++ interface.
}
</tcl>

<fancy_format>



<p>The core functions shown below are available by default. 
[datefunc | Date &amp; Time functions],
[aggfunc | aggregate functions],
[builtin window functions|window functions], and
[json1 | JSON functions] are documented separately.  An
application may define additional
................................................................................
  regexp {^[a-z_]+} $basesyntax fragment
  foreach coresyntax $syntax {
    lappend lx [list $fragment $coresyntax 0]
  }
}
hd_putsnl "<p>"
hd_list_of_links {} 300 [lsort -index 1 $lx]


hd_putsnl "<hr class='xhr'>"

hd_putsnl "<dl>"


foreach basesyntax [lsort [array names corefuncset]] {
  foreach {syntax keywords desc} $corefuncset($basesyntax) break
  regsub -all {\s+} [string trim $syntax] {<br />} syntax
  regsub -all {\(([^*)]+)\)} $syntax {(<i>\1</i>)} syntax
  regsub -all {,} $syntax {</i>,<i>} syntax
  regsub -all {<i>\.\.\.</i>} $syntax {...} syntax
  regexp {^[a-z]+} $basesyntax fragment
................................................................................
    regsub -all {[^a-z]} $fragname {} fragname
    hd_fragment $fragname
    eval hd_keywords [string map {\n { }} $keywords]
  }
  hd_puts "<dt><p><b>$syntax</b></dt>"
  hd_resolve "<dd><p>$desc</dd>\n"
}

hd_putsnl "</dl>"








|







 







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>







 







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  reversed in the like() function relative to the infix [LIKE] operator.
  X is the pattern and Y is the string to match against that pattern.
  Hence, the following expressions are equivalent:
  <blockquote><pre>
     name LIKE '%neon%'
     like('%neon%',name)
  </pre></blockquote>
  <p>^The [sqlite3_create_function()] interface can be used to override the
  like() function and thereby change the operation of the
  [LIKE] operator.  When overriding the like() function, it may be important
  to override both the two and three argument versions of the like() 
  function. Otherwise, different code may be called to implement the
  [LIKE] operator depending on whether or not an ESCAPE clause was 
  specified.
}
................................................................................
  [sqlite3_blob_open() | incremental BLOB I/O].
  ^This SQL function is implemented using the [sqlite3_result_zeroblob()]
  routine from the C/C++ interface.
}
</tcl>

<fancy_format>

<h1>Overview</h1>

<p>The core functions shown below are available by default. 
[datefunc | Date &amp; Time functions],
[aggfunc | aggregate functions],
[builtin window functions|window functions], and
[json1 | JSON functions] are documented separately.  An
application may define additional
................................................................................
  regexp {^[a-z_]+} $basesyntax fragment
  foreach coresyntax $syntax {
    lappend lx [list $fragment $coresyntax 0]
  }
}
hd_putsnl "<p>"
hd_list_of_links {} 300 [lsort -index 1 $lx]
</tcl>


<h1>Descriptions of built-in scalar SQL functions</h1>
<dl>

<tcl>
foreach basesyntax [lsort [array names corefuncset]] {
  foreach {syntax keywords desc} $corefuncset($basesyntax) break
  regsub -all {\s+} [string trim $syntax] {<br />} syntax
  regsub -all {\(([^*)]+)\)} $syntax {(<i>\1</i>)} syntax
  regsub -all {,} $syntax {</i>,<i>} syntax
  regsub -all {<i>\.\.\.</i>} $syntax {...} syntax
  regexp {^[a-z]+} $basesyntax fragment
................................................................................
    regsub -all {[^a-z]} $fragname {} fragname
    hd_fragment $fragname
    eval hd_keywords [string map {\n { }} $keywords]
  }
  hd_puts "<dt><p><b>$syntax</b></dt>"
  hd_resolve "<dd><p>$desc</dd>\n"
}
</tcl>
</dl>

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