Hi Andrew and Gary, thank you so much for taking the time to try to help me 
further - and between you, you've cracked the problem !

I ran the .tables command in sqlite3 and found lots of archive_day_xxxxx 
tables in my database, which were still present after I executed the 
drop-daily command.

However, when I prefixed that command with sudo as suggested, those tables 
disappeared.

Then I ran the rebuild-daily command, also pre-fixing it with sudo - and 
now for the first time I see messages about numbers of records processed 
etc and that command takes a number of seconds to complete, rather than 
just ending instantly. 

I then deleted all the png, html and NOAA files and re-started 
weewx......and lo and behold all my reports are now correct with no rogue 
data, yippee !!

Perhaps Tom K needs to update his wiki guide on how to do all this as I'm 
guessing I'm not the only person who has these permission problems 
preventing drop-daily and rebuild-daily from working ? And yes, it does 
seem odd that those weewx_database commands do not produce an error of any 
kind when they fail due to lack of permission.

Anyway, its working for me now---- thank you so much Andrew and Gary for 
your fantastic help, you guys rock !
Regards, Paul



On Thursday, August 2, 2018 at 6:14:48 AM UTC+1, Andrew Milner wrote:
>
> wow.  Well if you're right then it's a bug in wee_database for not 
> reporting an error of some kind.
>
> On Thursday, 2 August 2018 07:02:08 UTC+3, gjr80 wrote:
>>
>> I would have thought so bu I just tried it on a VM and it didn't throw an 
>> error, it looked for all intents and purposes as if --drop-daily worked but 
>> when I checked with sqlite3 the tables remained. Have not had a chance to 
>> dig any deeper.
>>
>> Gary
>>
>

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