Git commits in Moodle 3.6.7 by Matteo Scaramuccia

commit 9c82b32001aba51e74525326782bc7018b61bdc0
Author: Matteo Scaramuccia <moodle@matteoscaramuccia.com>
Date:   Mon, 20 May 2019 02:29:20 +0800
Tag:    v3.6.7

MDL-65811 database: Fix subsetting in MSSQL