Enable/disable signature retro-actively
 

I want to [temporarily] enable signatures to ALL previous posts retro-actively. That is to say, even where previous posts had no signature, i wanted to enable and display the current signature to all previous posts also.

I did find this code Execute SQL Query:

UPDATE
post
SET
showsignature='1'
WHERE
userid='X'
(where X is member number)

However, this gives following error:

vBulletin Message
An error occurred while attempting to execute your query. The following information was returned.
error number: 1146
error desc: Table 'MYSITENAME.post' doesn't exist

Any advice welcome.