Hi Alex, It's okay after I added in a new field "s_title" in the schema and re-indexed.
<field name="s_title" type="string" indexed="true" stored="false" multiValued="false"/> <copyField source="title" dest="s_title"/> But how can I ignore the articles ("A", "An", "The") in the sorting. As you can see from the below example : http://localhost:8983/solr/bibs/select?q=singapore&fl=id,title&sort=s_title+asc&wt=xml&start=0&rows=20&indent=true <response> <lst name="responseHeader"> <int name="status">0</int> <int name="QTime">0</int> <lst name="params"> <str name="q">singapore</str> <str name="indent">true</str> <str name="fl">id,title</str> <str name="start">0</str> <str name="sort">s_title asc</str> <str name="rows">20</str> <str name="wt">xml</str> </lst> </lst> <result name="response" numFound="18" start="0"> <doc> <str name="id">36</str> <str name="title"> 5th SEACEN-Toronto Centre Leadership Seminar for Senior Management of Central Banks on Financial System Oversight, 16-21 Oct 2005, Singapore </str> </doc> <doc> <str name="id">70</str> <str name="title"> Anti-money laundering & counter-terrorism financing / Commercial Affairs Dept </str> </doc> <doc> <str name="id">15</str> <str name="title"> China's anti-secession law : a legal perspective / Zou, Keyuan </str> </doc> <doc> <str name="id">12</str> <str name="title"> China's currency peg : firm in the eye of the storm / Calla Wiemer </str> </doc> <doc> <str name="id">22</str> <str name="title"> China's politics in 2004 : dawn of the Hu Jintao era / Zheng Yongnian & Lye Liang Fook </str> </doc> <doc> <str name="id">92</str> <str name="title"> Goods and Services Tax Act [2005 ed.] (Chapter 117A) </str> </doc> <doc> <str name="id">13</str> <str name="title"> Governing capacity in China : creating a contingent of qualified personnel / Kjeld Erik Brodsgaard </str> </doc> <doc> <str name="id">21</str> <str name="title">Health care marketization in urban China / Gu Xin</str> </doc> <doc> <str name="id">85</str> <str name="title">Lianhe Zaobao, Sunday</str> </doc> <doc> <str name="id">84</str> <str name="title"> Singapore : vision of a global city / Jones Lang LaSalle </str> </doc> <doc> <str name="id">7</str> <str name="title"> Singapore real estate investment trusts : leveraged value / Tony Darwell </str> </doc> <doc> <str name="id">96</str> <str name="title"> Singapore's success : engineering economic growth / Henri Ghesquiere </str> </doc> <doc> <str name="id">23</str> <str name="title"> The Chen-Soong meeting : the beginning of inter-party rapprochement in Taiwan? / Raymond R. Wu </str> </doc> <doc> <str name="id">17</str> <str name="title"> The Haw Par saga in the 1970s / project sponsor, Low Kwok Mun; team leader, Sandy Ho; team members, Audrey Low ... et al </str> </doc> <doc> <str name="id">78</str> <str name="title">The New paper on Sunday</str> </doc> <doc> <str name="id">95</str> <str name="title"> The little Red Dot : reflections by Singapore's diplomats / editors, Tommy Koh, Chang Li Lin </str> </doc> <doc> <str name="id">52</str> <str name="title"> [Press releases and articles on policy changes affecting the Singapore property market] / compiled by the Information Resource Centre, Monetary Authority of Singapore </str> </doc> <doc> <str name="id">dataq</str> <str name="title"> Simon is testing Solr - This one is in English. Color of the Wind. 我是中国人 , БOΛbШ OЙ PYCCKO-KИTAЙCKИЙ CΛOBAPb , Français-Chinois </str> </doc> </result> </response>