Doing a full rescan on my local collection, I get MySQL errors due to the apostrophes in directory names not being escaped, e.g.:

GREPME MySQL-server query failed! (1064) You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 's Voyage/_%'' at line 1 on SELECT id, deviceid, dir FROM directories WHERE deviceid = 2 AND dir LIKE './aaron/Music/Buckethead/Captain EO's Voyage/_%'

I'm not that familiar with the inner workings of Amarok and Qt, but I have traced this error to line 589 in src/core-impl/collections/db/sql/SqlScanResultProcessor.cpp, where it looks like the arguments are passed unescaped.

Reproducible: Always

Steps to Reproduce:
1. Start with a clean database
2. Have directories containing apostrophes in their names in your collection dir
3. Do a full rescan
Actual Results:  
Error messages like the one mentioned above pop up; the database is left nearly empty.