Merge "rdbms: add IDatabase::UNION_* constants for readability"
authorjenkins-bot <jenkins-bot@gerrit.wikimedia.org>
Thu, 28 Mar 2019 19:40:20 +0000 (19:40 +0000)
committerGerrit Code Review <gerrit@wikimedia.org>
Thu, 28 Mar 2019 19:40:20 +0000 (19:40 +0000)

Trivial merge