Module doesn't appear on update.php I wanted to add columns to my module schema, I added an update hook hook_update_6031
however when I go to the update.php script my module isn't listed at all, not even as "no updates". Do I have to provide some hook to have my module be listed? I can't seem to find any documentation on how to write updates other than the function documentation for hook_update or looking at some other module code.
Some things to check:


Is your update function placed in [modulename].module or in [modulename].install? It should be in the install file.
Is the function really called hook_update_6031? in that case, replace 'hook' with the name of your module. For instance, an update function for the comment module could be called comment_update_6003.


If the above does not help, please update your question with the code of your update function. Also check the value in the schema_version column in the system table for your module - for the [modulename]_update_6031 function, it must not be less than 6031, but not -1.