From: Heikki Levanto <heikki@indexdata.dk>
Date: Tue, 17 Feb 2015 10:33:03 +0000 (+0100)
Subject: MPSPARQL-8: Use OPTIONAL for all fields in the "work" db
X-Git-Tag: v0.4~12
X-Git-Url: http://git.indexdata.com/?p=mp-sparql-moved-to-github.git;a=commitdiff_plain;h=2ba1be81c6e39a049ea5ae80aa999dd8e0d2efae;hp=2ba1be81c6e39a049ea5ae80aa999dd8e0d2efae

MPSPARQL-8: Use OPTIONAL for all fields in the "work" db

Seems to work all right, although we don't have enough test data
to see records without subjects or authors
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