Fixes #9813. During QFQ database update, skip errors like 'Error 1060 - Duplicate Column'.

2 jobs for B9813QfqDownUpgradeColumnExist in 1 minute and 58 seconds (queued for 2 seconds)
Status Job ID Name Coverage
  Before
passed #4782
documentation

00:00:38

 
  Build
passed #4783
snapshot

00:01:19