Fix postgresql query for organization stats

[touilleMan]

No description provided.

[codecov]

Codecov Report

Merging #1795 (1e7fb93) into master (58f0abe) will increase coverage by 0.48%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #1795      +/-   ##
==========================================
+ Coverage   87.25%   87.73%   +0.48%     
==========================================
  Files         245      245              
  Lines       23895    23895              
==========================================
+ Hits        20849    20964     +115     
+ Misses       3046     2931     -115     

Impacted Files	Coverage Δ
parsec/backend/postgresql/organization.py	93.75% <ø> (ø)
parsec/core/sync_monitor.py	92.82% <0.00%> (-0.40%)	⬇️
parsec/core/gui/central_widget.py	85.92% <0.00%> (-0.37%)	⬇️
parsec/core/fs/remote_loader.py	85.07% <0.00%> (+0.37%)	⬆️
parsec/core/gui/greet_user_widget.py	86.83% <0.00%> (+0.38%)	⬆️
parsec/core/fs/workspacefs/entry_transactions.py	97.76% <0.00%> (+0.55%)	⬆️
parsec/core/fs/userfs/userfs.py	86.99% <0.00%> (+0.63%)	⬆️
parsec/service_nursery.py	80.76% <0.00%> (+1.28%)	⬆️
parsec/core/gui/parsec_application.py	80.95% <0.00%> (+1.58%)	⬆️
parsec/core/gui/workspaces_widget.py	82.09% <0.00%> (+2.88%)	⬆️
... and 4 more

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