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diff --git a/src/include/gnunet_my_lib.h b/src/include/gnunet_my_lib.h
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+++ b/src/include/gnunet_my_lib.h
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+/*
+     This file is part of GNUnet
+     Copyright (C) 2012 GNUnet e.V.
+
+     GNUnet is free software; you can redistribute it and/or modify
+     it under the terms of the GNU General Public License as published
+     by the Free Software Foundation; either version 3, or (at your
+     option) any later version.
+
+     GNUnet is distributed in the hope that it will be useful, but
+     WITHOUT ANY WARRANTY; without even the implied warranty of
+     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+     General Public License for more details.
+
+     You should have received a copy of the GNU General Public License
+     along with GNUnet; see the file COPYING.  If not, write to the
+     Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+     Boston, MA 02110-1301, USA.
+*/
+/**
+ * @author Christian Grothoff
+ *
+ * @file
+ * Helper library to access a MySQL database
+ *
+ * @defgroup mysql  MySQL library
+ * Helper library to access a MySQL database.
+ * @{
+ */
+#ifndef GNUNET_MY_LIB_H
+#define GNUNET_MY_LIB_H
+
+#include "gnunet_util_lib.h"
+#include "gnunet_mysql_lib.h"
+#include <mysql/mysql.h>
+
+#ifdef __cplusplus
+extern "C"
+{
+#if 0                           /* keep Emacsens' auto-indent happy */
+}
+#endif
+#endif
+
+
+
+/**
+ * Information we pass to #GNUNET_MY_exec_prepared() to
+ * initialize the arguments of the prepared statement.
+ */
+struct GNUNET_MY_QueryParam;
+
+
+/**
+ * Function called to convert input argument into SQL parameters.
+ *
+ * @param cls closure
+ * @param pq data about the query
+ * @param qbind array of parameters to initialize
+ * @return -1 on error
+ */
+typedef int
+(*GNUNET_MY_QueryConverter)(void *cls,
+                            const struct GNUNET_MY_QueryParam *qp,
+                            MYSQL_BIND *qbind);
+
+
+
+/**
+ * Information we pass to #GNUNET_MY_exec_prepared() to
+ * initialize the arguments of the prepared statement.
+ */
+struct GNUNET_MY_QueryParam
+{
+
+  /**
+   * Function to call for the type conversion.
+   */
+  GNUNET_MY_QueryConverter conv;
+
+  /**
+   * Closure for @e conv.
+   */
+  void *conv_cls;
+
+  /**
+   * Number of arguments the @a conv converter expects to initialize.
+   */
+  unsigned int num_params;
+
+  /**
+   * Information to pass to @e conv.
+   */
+  const void *data;
+
+  /**
+   * Information to pass to @e conv.  Size of @a data.
+   */
+  unsigned long data_len;
+
+};
+
+
+/**
+ * End of result parameter specification.
+ *
+ * @return array last entry for the result specification to use
+ */
+#define GNUNET_MY_query_param_end { NULL, NULL, 0, NULL, 0 }
+
+
+
+/**
+ * Generate query parameter for a buffer @a ptr of
+ * @a ptr_size bytes.
+ *
+ * @param ptr pointer to the query parameter to pass
+ * @oaran ptr_size number of bytes in @a ptr
+ */
+struct GNUNET_MY_QueryParam
+GNUNET_MY_query_param_fixed_size (const void *ptr,
+                                  size_t ptr_size);
+
+
+/**
+ * Run a prepared SELECT statement.
+ *
+ * @param mc mysql context
+ * @param sh handle to SELECT statment
+ * @param params parameters to the statement
+ * @return TBD
+ */
+int
+GNUNET_MY_exec_prepared (struct GNUNET_MYSQL_Context *mc,
+                         struct GNUNET_MYSQL_StatementHandle *sh,
+                         const struct GNUNET_MY_QueryParam *params);
+
+
+#if 0                           /* keep Emacsens' auto-indent happy */
+{
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+#endif
+
+/** @} */  /* end of group */