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+<!-- keywords: sqlite3_exec -->
+<div class=nosearch>
+<a href="../c3ref/intro.html"><h2>SQLite C Interface</h2></a>
+<h2>One-Step Query Execution Interface</h2>
+</div>
+<blockquote><pre>
+int sqlite3_exec(
+  sqlite3*,                                  /* An open database */
+  const char *sql,                           /* SQL to be evaluated */
+  int (*callback)(void*,int,char**,char**),  /* Callback function */
+  void *,                                    /* 1st argument to callback */
+  char **errmsg                              /* Error msg written here */
+);
+</pre></blockquote>
+<p>
+The sqlite3_exec() interface is a convenience wrapper around
+<a href="../c3ref/prepare.html">sqlite3_prepare_v2()</a>, <a href="../c3ref/step.html">sqlite3_step()</a>, and <a href="../c3ref/finalize.html">sqlite3_finalize()</a>,
+that allows an application to run multiple statements of SQL
+without having to use a lot of C code.</p>
+
+<p>The sqlite3_exec() interface runs zero or more UTF-8 encoded,
+semicolon-separate SQL statements passed into its 2nd argument,
+in the context of the <a href="../c3ref/sqlite3.html">database connection</a> passed in as its 1st
+argument.  If the callback function of the 3rd argument to
+sqlite3_exec() is not NULL, then it is invoked for each result row
+coming out of the evaluated SQL statements.  The 4th argument to
+sqlite3_exec() is relayed through to the 1st argument of each
+callback invocation.  If the callback pointer to sqlite3_exec()
+is NULL, then no callback is ever invoked and result rows are
+ignored.</p>
+
+<p>If an error occurs while evaluating the SQL statements passed into
+sqlite3_exec(), then execution of the current statement stops and
+subsequent statements are skipped.  If the 5th parameter to sqlite3_exec()
+is not NULL then any error message is written into memory obtained
+from <a href="../c3ref/free.html">sqlite3_malloc()</a> and passed back through the 5th parameter.
+To avoid memory leaks, the application should invoke <a href="../c3ref/free.html">sqlite3_free()</a>
+on error message strings returned through the 5th parameter of
+sqlite3_exec() after the error message string is no longer needed.
+If the 5th parameter to sqlite3_exec() is not NULL and no errors
+occur, then sqlite3_exec() sets the pointer in its 5th parameter to
+NULL before returning.</p>
+
+<p>If an sqlite3_exec() callback returns non-zero, the sqlite3_exec()
+routine returns SQLITE_ABORT without invoking the callback again and
+without running any subsequent SQL statements.</p>
+
+<p>The 2nd argument to the sqlite3_exec() callback function is the
+number of columns in the result.  The 3rd argument to the sqlite3_exec()
+callback is an array of pointers to strings obtained as if from
+<a href="../c3ref/column_blob.html">sqlite3_column_text()</a>, one for each column.  If an element of a
+result row is NULL then the corresponding string pointer for the
+sqlite3_exec() callback is a NULL pointer.  The 4th argument to the
+sqlite3_exec() callback is an array of pointers to strings where each
+entry represents the name of corresponding result column as obtained
+from <a href="../c3ref/column_name.html">sqlite3_column_name()</a>.</p>
+
+<p>If the 2nd parameter to sqlite3_exec() is a NULL pointer, a pointer
+to an empty string, or a pointer that contains only whitespace and/or
+SQL comments, then no SQL statements are evaluated and the database
+is not changed.</p>
+
+<p>Restrictions:</p>
+
+<p><ul>
+<li> The application must ensure that the 1st parameter to sqlite3_exec()
+is a valid and open <a href="../c3ref/sqlite3.html">database connection</a>.
+<li> The application must not close the <a href="../c3ref/sqlite3.html">database connection</a> specified by
+the 1st parameter to sqlite3_exec() while sqlite3_exec() is running.
+<li> The application must not modify the SQL statement text passed into
+the 2nd parameter of sqlite3_exec() while sqlite3_exec() is running.
+</ul>
+</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>
+