Afterwards I saw Nico's BundleBlog and noted it uses /tags/.
So I decided to change my setup from references to fields, templates, etc that were 'tags' to 'tagging'.
I used 'Edit field: tags > Duplicate/clone this field'. That gave me 'tags_1'.
I then edited 'tags_1' and went to rename it to 'tagging' and hit an error, PW said this name already existed. It seems from my trial/error/learn process I have ended up with at least two fields in my database (seen via MySQL) that aren't listed under Amin > Setup > Fields and one of those is called 'tagging'.
What is the best way to clear old/unused things, or, is this an edge case and it's only my trial and error steps that have led to this odd situation and ought I do make a new PW install and manually copy settings over. I don't mind doing that at all, my only concern is that I'd like to learn from this so were this a larger site I could perhaps recover in a more subtle (and quicker) way.
Thanks in advance for any pointers.
PS: The error is Table 'tmp_field_tagging' already exists
PPS: I've got around this by using the new name of 'tagged' instead of 'tagging', but I'd love to learn if defunct bits of my database can be safely cleared out somehow, e.g. I now have these four fields and yet only one will be used.
PPPS: Thinking about this, I will need to learn how to clear out old unused db items as I will be using Nico's Blog Module and that will need 'tags' to be gone. On reflection I think I was caught out by this/surprised as I assumed deleting a field would delete part fo the db that had been created to represent that field.
Edited by alan, 30 March 2012 - 10:17 AM.