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Re: UPDATE many records

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> On Jan 7, 2020, at 11:56 AM, Alan Hodgson <ahodgson@xxxxxxxxxxxxxxx> wrote:
> 
> On Tue, 2020-01-07 at 11:47 -0900, Israel Brewster wrote:
>> One potential issue I just thought of with this approach: disk space.
>> Will I be doubling the amount of space used while both tables exist?
>> If so, that would prevent this from working - I don’t have that much
>> space available at the moment.
> 
> The original update you planned would do that, too.
> 
> You probably need to just do the update in batches and vacuum the table
> between batches.
> 
> 

Really? Why? With the update I am only changing data - I’m not adding any additional data, so the total size should stay the same, right? I’m obviously missing something… :-)

---
Israel Brewster
Software Engineer
Alaska Volcano Observatory 
Geophysical Institute - UAF 
2156 Koyukuk Drive 
Fairbanks AK 99775-7320
Work: 907-474-5172
cell:  907-328-9145

> 







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