Fix migrations for older PostgreSQL versions
What does this MR do?
Fixes migrations for older PostgreSQL versions
- Do not care about error when creating index on PostgreSQL, as the
IF NOT EXISTS
is supported since PostgreSQL 9.5, - Test against PostgreSQL 9.2 to check migrations
Are there points in the code the reviewer needs to double check?
Why was this MR needed?
Screenshots (if relevant)
Does this MR meet the acceptance criteria?
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Changelog entry added, if necessary -
Documentation created/updated -
API support added - Tests
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Added for this feature/bug -
All builds are passing
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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