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Guard against divide by 0 in update-derivation-outputs-statistics

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Christopher Baines 2022-11-28 13:17:20 +00:00
parent 1a0c5599eb
commit 6ada1cb845
1 changed files with 8 additions and 7 deletions
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15
guix-data-service/model/derivation.scm
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@ -1965,16 +1965,17 @@ SELECT COUNT(DISTINCT derivation_id), COUNT(*) FROM derivation_outputs"))
(match (exec-query conn query)
(((derivation_id_count all_count))
(exec-query
conn
(format
#f
"
(unless (< (string->number all_count) 1)
(exec-query
conn
(format
#f
"
ALTER TABLE derivation_outputs
ALTER COLUMN derivation_id
SET (n_distinct = ~7f)"
(* -1 (/ (string->number derivation_id_count)
(string->number all_count)))))))))
(* -1 (/ (string->number derivation_id_count)
(string->number all_count))))))))))
(define (vacuum-derivation-outputs-table conn)
(exec-query