Fix AddUniqueIndexToLabels migration to skip unnecesary queries (!7028) · Merge requests · GitLab.org / GitLab FOSS · GitLab

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username-removed-367626 requested to merge 23609-adduniqueindextolabels-fails-when-there-are-no-duplicated-ids into master Oct 21, 2016

What does this MR do?

Fix AddUniqueIndexToLabels migration to skip unnecesary queries

Are there points in the code the reviewer needs to double check?

No

Why was this MR needed?

Migration fails if there are no duplicated labels to delete

Does this MR meet the acceptance criteria?

CHANGELOG entry added
Documentation created/updated
API support added
Tests
- Added for this feature/bug
- All builds are passing
Conform by the merge request performance guides
Conform by the style guides
Branch has no merge conflicts with master (if it does - rebase it please)
Squashed related commits together

What are the relevant issue numbers?

Closes #23609 (closed)