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Optimize SQL query so it only runs one query rather than N

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This commit is contained in:
David Dworken 2022-09-20 21:36:02 -07:00
parent 19bbf27efd
commit 80822c722e
1 changed files with 7 additions and 9 deletions
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16
backend/server/server.go
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@ -277,17 +277,15 @@ func addDeletionRequestHandler(w http.ResponseWriter, r *http.Request) {
}
func applyDeletionRequestsToBackend(request shared.DeletionRequest) (int, error) {
numDeleted := 0
tx := GLOBAL_DB.Where("false")
for _, message := range request.Messages.Ids {
// TODO: Optimize this into one query
tx := GLOBAL_DB.Where("user_id = ? AND device_id = ? AND date = ?", request.UserId, message.DeviceId, message.Date)
result := tx.Delete(&shared.EncHistoryEntry{})
if result.Error != nil {
return 0, result.Error
}
numDeleted += int(result.RowsAffected)
tx = tx.Or(GLOBAL_DB.Where("user_id = ? AND device_id = ? AND date = ?", request.UserId, message.DeviceId, message.Date))
}
return numDeleted, nil
result := tx.Delete(&shared.EncHistoryEntry{})
if result.Error != nil {
return 0, result.Error
}
return int(result.RowsAffected), nil
}
func wipeDbHandler(w http.ResponseWriter, r *http.Request) {