1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
|
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<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>SQL Trace Event Codes</title>
</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_div("searchmenu")'>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">
<span class="desktoponly">Search for:</span> <input type="text" name="q">
<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 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.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;
}
</script>
</div>
<!-- keywords: SQLITE_TRACE SQLITE_TRACE_CLOSE SQLITE_TRACE_PROFILE SQLITE_TRACE_ROW SQLITE_TRACE_STMT -->
<div class=nosearch>
<a href="intro.html"><h2>SQLite C Interface</h2></a>
<h2>SQL Trace Event Codes</h2>
</div>
<blockquote><pre>
#define SQLITE_TRACE_STMT 0x01
#define SQLITE_TRACE_PROFILE 0x02
#define SQLITE_TRACE_ROW 0x04
#define SQLITE_TRACE_CLOSE 0x08
</pre></blockquote>
<p>
These constants identify classes of events that can be monitored
using the <a href="../c3ref/trace_v2.html">sqlite3_trace_v2()</a> tracing logic. The third argument
to <a href="../c3ref/trace_v2.html">sqlite3_trace_v2()</a> is an OR-ed combination of one or more of
the following constants. The first argument to the trace callback
is one of the following constants.</p>
<p>New tracing constants may be added in future releases.</p>
<p>A trace callback has four arguments: xCallback(T,C,P,X).
The T argument is one of the integer type codes above.
The C argument is a copy of the context pointer passed in as the
fourth argument to <a href="../c3ref/trace_v2.html">sqlite3_trace_v2()</a>.
The P and X arguments are pointers whose meanings depend on T.</p>
<p><dl>
<a name="sqlitetracestmt"></a>
<dt>SQLITE_TRACE_STMT</dt>
<dd>An SQLITE_TRACE_STMT callback is invoked when a prepared statement
first begins running and possibly at other times during the
execution of the prepared statement, such as at the start of each
trigger subprogram. The P argument is a pointer to the
<a href="../c3ref/stmt.html">prepared statement</a>. The X argument is a pointer to a string which
is the unexpanded SQL text of the prepared statement or an SQL comment
that indicates the invocation of a trigger. The callback can compute
the same text that would have been returned by the legacy <a href="../c3ref/profile.html">sqlite3_trace()</a>
interface by using the X argument when X begins with "--" and invoking
<a href="../c3ref/expanded_sql.html">sqlite3_expanded_sql(P)</a> otherwise.</p>
<p><a name="sqlitetraceprofile"></a>
<dt>SQLITE_TRACE_PROFILE</dt>
<dd>An SQLITE_TRACE_PROFILE callback provides approximately the same
information as is provided by the <a href="../c3ref/profile.html">sqlite3_profile()</a> callback.
The P argument is a pointer to the <a href="../c3ref/stmt.html">prepared statement</a> and the
X argument points to a 64-bit integer which is the estimated of
the number of nanosecond that the prepared statement took to run.
The SQLITE_TRACE_PROFILE callback is invoked when the statement finishes.</p>
<p><a name="sqlitetracerow"></a>
<dt>SQLITE_TRACE_ROW</dt>
<dd>An SQLITE_TRACE_ROW callback is invoked whenever a prepared
statement generates a single row of result.
The P argument is a pointer to the <a href="../c3ref/stmt.html">prepared statement</a> and the
X argument is unused.</p>
<p><a name="sqlitetraceclose"></a>
<dt>SQLITE_TRACE_CLOSE</dt>
<dd>An SQLITE_TRACE_CLOSE callback is invoked when a database
connection closes.
The P argument is a pointer to the <a href="../c3ref/sqlite3.html">database connection</a> object
and the X argument is unused.
</dl>
</p><p>See also lists of
<a href="objlist.html">Objects</a>,
<a href="constlist.html">Constants</a>, and
<a href="funclist.html">Functions</a>.</p>
|
