public static extern int sqlite3_create_function_v2(IntPtr db, IntPtr zFunctionName, int nArg, int eTextRep, IntPtr pApp, sqlite3_create_function_callback_delegate func, sqlite3_create_function_callback_delegate fstep, sqlite3_create_function_final_callback_delegate ffinal, sqlite3_create_function_destroy_delegate fdestroy);
public static extern int sqlite3_create_function(IntPtr db, IntPtr strName, int nArgs, int nType, IntPtr pvUser, sqlite3_create_function_callback_delegate func, sqlite3_create_function_callback_delegate fstep, sqlite3_create_function_final_callback_delegate ffinal);