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<!-- keywords: sqlite3_expanded_sql sqlite3_normalized_sql sqlite3_sql -->
<div class=nosearch>
<a href="intro.html"><h2>SQLite C Interface</h2></a>
<h2>Retrieving Statement SQL</h2>
</div>
<blockquote><pre>
const char *sqlite3_sql(sqlite3_stmt *pStmt);
char *sqlite3_expanded_sql(sqlite3_stmt *pStmt);
#ifdef SQLITE_ENABLE_NORMALIZE
const char *sqlite3_normalized_sql(sqlite3_stmt *pStmt);
#endif
</pre></blockquote>
<p>
The sqlite3_sql(P) interface returns a pointer to a copy of the UTF-8
SQL text used to create <a href="../c3ref/stmt.html">prepared statement</a> P if P was
created by <a href="../c3ref/prepare.html">sqlite3_prepare_v2()</a>, <a href="../c3ref/prepare.html">sqlite3_prepare_v3()</a>,
<a href="../c3ref/prepare.html">sqlite3_prepare16_v2()</a>, or <a href="../c3ref/prepare.html">sqlite3_prepare16_v3()</a>.
The sqlite3_expanded_sql(P) interface returns a pointer to a UTF-8
string containing the SQL text of prepared statement P with
<a href="../lang_expr.html#varparam">bound parameters</a> expanded.
The sqlite3_normalized_sql(P) interface returns a pointer to a UTF-8
string containing the normalized SQL text of prepared statement P. The
semantics used to normalize a SQL statement are unspecified and subject
to change. At a minimum, literal values will be replaced with suitable
placeholders.</p>
<p>For example, if a prepared statement is created using the SQL
text "SELECT $abc,:xyz" and if parameter $abc is bound to integer 2345
and parameter :xyz is unbound, then sqlite3_sql() will return
the original string, "SELECT $abc,:xyz" but sqlite3_expanded_sql()
will return "SELECT 2345,NULL".</p>
<p>The sqlite3_expanded_sql() interface returns NULL if insufficient memory
is available to hold the result, or if the result would exceed the
the maximum string length determined by the <a href="../c3ref/c_limit_attached.html#sqlitelimitlength">SQLITE_LIMIT_LENGTH</a>.</p>
<p>The <a href="../compile.html#trace_size_limit">SQLITE_TRACE_SIZE_LIMIT</a> compile-time option limits the size of
bound parameter expansions. The <a href="../compile.html#omit_trace">SQLITE_OMIT_TRACE</a> compile-time
option causes sqlite3_expanded_sql() to always return NULL.</p>
<p>The strings returned by sqlite3_sql(P) and sqlite3_normalized_sql(P)
are managed by SQLite and are automatically freed when the prepared
statement is finalized.
The string returned by sqlite3_expanded_sql(P), on the other hand,
is obtained from <a href="../c3ref/free.html">sqlite3_malloc()</a> and must be freed by the application
by passing it to <a href="../c3ref/free.html">sqlite3_free()</a>.</p>
<p>The sqlite3_normalized_sql() interface is only available if
the <a href="../compile.html#enable_normalize">SQLITE_ENABLE_NORMALIZE</a> compile-time option is defined.
</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>
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