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diff --git a/www/c3ref/column_database_name.html b/www/c3ref/column_database_name.html new file mode 100644 index 0000000..d7c52e5 --- /dev/null +++ b/www/c3ref/column_database_name.html @@ -0,0 +1,173 @@ +<!DOCTYPE html> +<html><head> +<meta name="viewport" content="width=device-width, initial-scale=1.0"> +<meta http-equiv="content-type" content="text/html; charset=UTF-8"> +<link href="../sqlite.css" rel="stylesheet"> +<title>Source Of Data In A Query Result</title> +<!-- path=../ --> +</head> +<body> +<div class=nosearch> +<a href="../index.html"> +<img class="logo" src="../images/sqlite370_banner.gif" alt="SQLite" border="0"> +</a> +<div><!-- IE hack to prevent disappearing logo --></div> +<div class="tagline desktoponly"> +Small. Fast. Reliable.<br>Choose any three. +</div> +<div class="menu mainmenu"> +<ul> +<li><a href="../index.html">Home</a> +<li class='mobileonly'><a href="javascript:void(0)" onclick='toggle_div("submenu")'>Menu</a> +<li class='wideonly'><a href='../about.html'>About</a> +<li class='desktoponly'><a href="../docs.html">Documentation</a> +<li class='desktoponly'><a href="../download.html">Download</a> +<li class='wideonly'><a href='../copyright.html'>License</a> +<li class='desktoponly'><a href="../support.html">Support</a> +<li class='desktoponly'><a href="../prosupport.html">Purchase</a> +<li class='search' id='search_menubutton'> +<a href="javascript:void(0)" onclick='toggle_search()'>Search</a> +</ul> +</div> +<div class="menu submenu" id="submenu"> +<ul> +<li><a href='../about.html'>About</a> +<li><a href='../docs.html'>Documentation</a> +<li><a href='../download.html'>Download</a> +<li><a href='../support.html'>Support</a> +<li><a href='../prosupport.html'>Purchase</a> +</ul> +</div> +<div class="searchmenu" id="searchmenu"> +<form method="GET" action="../search"> +<select name="s" id="searchtype"> +<option value="d">Search Documentation</option> +<option value="c">Search Changelog</option> +</select> +<input type="text" name="q" id="searchbox" value=""> +<input type="submit" value="Go"> +</form> +</div> +</div> +<script> +function toggle_div(nm) { +var w = document.getElementById(nm); +if( w.style.display=="block" ){ +w.style.display = "none"; +}else{ +w.style.display = "block"; +} +} +function toggle_search() { +var w = document.getElementById("searchmenu"); +if( w.style.display=="block" ){ +w.style.display = "none"; +} else { +w.style.display = "block"; +setTimeout(function(){ +document.getElementById("searchbox").focus() +}, 30); +} +} +function div_off(nm){document.getElementById(nm).style.display="none";} +window.onbeforeunload = function(e){div_off("submenu");} +/* Disable the Search feature if we are not operating from CGI, since */ +/* Search is accomplished using CGI and will not work without it. */ +if( !location.origin || !location.origin.match || !location.origin.match(/http/) ){ +document.getElementById("search_menubutton").style.display = "none"; +} +/* Used by the Hide/Show button beside syntax diagrams, to toggle the */ +function hideorshow(btn,obj){ +var x = document.getElementById(obj); +var b = document.getElementById(btn); +if( x.style.display!='none' ){ +x.style.display = 'none'; +b.innerHTML='show'; +}else{ +x.style.display = ''; +b.innerHTML='hide'; +} +return false; +} +var antiRobot = 0; +function antiRobotGo(){ +if( antiRobot!=3 ) return; +antiRobot = 7; +var j = document.getElementById("mtimelink"); +if(j && j.hasAttribute("data-href")) j.href=j.getAttribute("data-href"); +} +function antiRobotDefense(){ +document.body.onmousedown=function(){ +antiRobot |= 2; +antiRobotGo(); +document.body.onmousedown=null; +} +document.body.onmousemove=function(){ +antiRobot |= 2; +antiRobotGo(); +document.body.onmousemove=null; +} +setTimeout(function(){ +antiRobot |= 1; +antiRobotGo(); +}, 100) +antiRobotGo(); +} +antiRobotDefense(); +</script> +<!-- keywords: sqlite3_column_database_name sqlite3_column_database_name16 sqlite3_column_origin_name sqlite3_column_origin_name16 sqlite3_column_table_name sqlite3_column_table_name16 --> +<div class=nosearch> +<a href="../c3ref/intro.html"><h2>SQLite C Interface</h2></a> +<h2>Source Of Data In A Query Result</h2> +</div> +<blockquote><pre> +const char *sqlite3_column_database_name(sqlite3_stmt*,int); +const void *sqlite3_column_database_name16(sqlite3_stmt*,int); +const char *sqlite3_column_table_name(sqlite3_stmt*,int); +const void *sqlite3_column_table_name16(sqlite3_stmt*,int); +const char *sqlite3_column_origin_name(sqlite3_stmt*,int); +const void *sqlite3_column_origin_name16(sqlite3_stmt*,int); +</pre></blockquote> +<p> +These routines provide a means to determine the database, table, and +table column that is the origin of a particular result column in +<a href="../lang_select.html">SELECT</a> statement. +The name of the database or table or column can be returned as +either a UTF-8 or UTF-16 string. The _database_ routines return +the database name, the _table_ routines return the table name, and +the origin_ routines return the column name. +The returned string is valid until the <a href="../c3ref/stmt.html">prepared statement</a> is destroyed +using <a href="../c3ref/finalize.html">sqlite3_finalize()</a> or until the statement is automatically +reprepared by the first call to <a href="../c3ref/step.html">sqlite3_step()</a> for a particular run +or until the same information is requested +again in a different encoding.</p> + +<p>The names returned are the original un-aliased names of the +database, table, and column.</p> + +<p>The first argument to these interfaces is a <a href="../c3ref/stmt.html">prepared statement</a>. +These functions return information about the Nth result column returned by +the statement, where N is the second function argument. +The left-most column is column 0 for these routines.</p> + +<p>If the Nth column returned by the statement is an expression or +subquery and is not a column value, then all of these functions return +NULL. These routines might also return NULL if a memory allocation error +occurs. Otherwise, they return the name of the attached database, table, +or column that query result column was extracted from.</p> + +<p>As with all other SQLite APIs, those whose names end with "16" return +UTF-16 encoded strings and the other functions return UTF-8.</p> + +<p>These APIs are only available if the library was compiled with the +<a href="../compile.html#enable_column_metadata">SQLITE_ENABLE_COLUMN_METADATA</a> C-preprocessor symbol.</p> + +<p>If two or more threads call one or more +<a href="../c3ref/column_database_name.html">column metadata interfaces</a> +for the same <a href="../c3ref/stmt.html">prepared statement</a> and result column +at the same time then the results are undefined. +</p><p>See also lists of + <a href="../c3ref/objlist.html">Objects</a>, + <a href="../c3ref/constlist.html">Constants</a>, and + <a href="../c3ref/funclist.html">Functions</a>.</p> + |