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+<!-- keywords: sqlite3_free_table sqlite3_get_table -->
+<div class=nosearch>
+<a href="intro.html"><h2>SQLite C Interface</h2></a>
+<h2>Convenience Routines For Running Queries</h2>
+</div>
+<blockquote><pre>
+int sqlite3_get_table(
+ sqlite3 *db, /* An open database */
+ const char *zSql, /* SQL to be evaluated */
+ char ***pazResult, /* Results of the query */
+ int *pnRow, /* Number of result rows written here */
+ int *pnColumn, /* Number of result columns written here */
+ char **pzErrmsg /* Error msg written here */
+);
+void sqlite3_free_table(char **result);
+</pre></blockquote>
+<p>
+This is a legacy interface that is preserved for backwards compatibility.
+Use of this interface is not recommended.</p>
+
+<p>Definition: A <b>result table</b> is memory data structure created by the
+<a href="../c3ref/free_table.html">sqlite3_get_table()</a> interface. A result table records the
+complete query results from one or more queries.</p>
+
+<p>The table conceptually has a number of rows and columns. But
+these numbers are not part of the result table itself. These
+numbers are obtained separately. Let N be the number of rows
+and M be the number of columns.</p>
+
+<p>A result table is an array of pointers to zero-terminated UTF-8 strings.
+There are (N+1)*M elements in the array. The first M pointers point
+to zero-terminated strings that contain the names of the columns.
+The remaining entries all point to query results. NULL values result
+in NULL pointers. All other values are in their UTF-8 zero-terminated
+string representation as returned by <a href="../c3ref/column_blob.html">sqlite3_column_text()</a>.</p>
+
+<p>A result table might consist of one or more memory allocations.
+It is not safe to pass a result table directly to <a href="../c3ref/free.html">sqlite3_free()</a>.
+A result table should be deallocated using <a href="../c3ref/free_table.html">sqlite3_free_table()</a>.</p>
+
+<p>As an example of the result table format, suppose a query result
+is as follows:</p>
+
+<p><blockquote><pre>
+Name | Age
+-----------------------
+Alice | 43
+Bob | 28
+Cindy | 21
+</pre></blockquote></p>
+
+<p>There are two columns (M==2) and three rows (N==3). Thus the
+result table has 8 entries. Suppose the result table is stored
+in an array named azResult. Then azResult holds this content:</p>
+
+<p><blockquote><pre>
+azResult&#91;0] = "Name";
+azResult&#91;1] = "Age";
+azResult&#91;2] = "Alice";
+azResult&#91;3] = "43";
+azResult&#91;4] = "Bob";
+azResult&#91;5] = "28";
+azResult&#91;6] = "Cindy";
+azResult&#91;7] = "21";
+</pre></blockquote></p>
+
+<p>The sqlite3_get_table() function evaluates one or more
+semicolon-separated SQL statements in the zero-terminated UTF-8
+string of its 2nd parameter and returns a result table to the
+pointer given in its 3rd parameter.</p>
+
+<p>After the application has finished with the result from sqlite3_get_table(),
+it must pass the result table pointer to sqlite3_free_table() in order to
+release the memory that was malloced. Because of the way the
+<a href="../c3ref/free.html">sqlite3_malloc()</a> happens within sqlite3_get_table(), the calling
+function must not try to call <a href="../c3ref/free.html">sqlite3_free()</a> directly. Only
+<a href="../c3ref/free_table.html">sqlite3_free_table()</a> is able to release the memory properly and safely.</p>
+
+<p>The sqlite3_get_table() interface is implemented as a wrapper around
+<a href="../c3ref/exec.html">sqlite3_exec()</a>. The sqlite3_get_table() routine does not have access
+to any internal data structures of SQLite. It uses only the public
+interface defined here. As a consequence, errors that occur in the
+wrapper layer outside of the internal <a href="../c3ref/exec.html">sqlite3_exec()</a> call are not
+reflected in subsequent calls to <a href="../c3ref/errcode.html">sqlite3_errcode()</a> or
+<a href="../c3ref/errcode.html">sqlite3_errmsg()</a>.
+</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>
+