<http://webisa.webdatacommons.org/409631153>	<http://www.w3.org/ns/prov#value>	"Whether or not to use covering indexes also depend on data types of these columns." .
<http://webisa.webdatacommons.org/409631153>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/prov/119474220>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/409631153> .
<http://webisa.webdatacommons.org/409631153>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<sqlservercentral.com> .