How to sort value that numeric mix alpha
Dear all, Could anybody suggest me how to sort the field that has numeric mix with alpha. In my case I have field name 'product_id' which contain value like C1,C2,C3,C4,C9,C12,C23,C50 when I try to sort (DESC) it return wrong result something like this C9,C50,C4,C3,C23,C2,C12,C1 As you see I have 'C' for prefix. So, In my Schema.xml I have tried this... fieldType name=alphaOnlySort class=solr.TextField sortMissingLast=true omitNorms=true analyzer tokenizer class=solr.KeywordTokenizerFactory/ filter class=solr.LowerCaseFilterFactory / filter class=solr.TrimFilterFactory / filter class=solr.PatternReplaceFilterFactory pattern=([^a-z]) replacement= replace=all / /analyzer /fieldType field name=pid_sort type=alphaOnlySort indexed=true stored=true / copyField source=product_id dest=pid_sort/ but it didn't work. How to deal with this? Thank you very much, Chun. -- View this message in context: http://lucene.472066.n3.nabble.com/How-to-sort-value-that-numeric-mix-alpha-tp4144615.html Sent from the Solr - User mailing list archive at Nabble.com.
Re: How to sort value that numeric mix alpha
Try indexing your data as follows: C01,C02,C03,C04,C09,C12,C23,C50 instead of C1,C2,C3,C4,C9,C12,C23,C50 and the sort order would work correctly. BTW, what you are describing as an issue is NOT unique to Solr. The same happens on regular Databases as well. Google up how database type systems perform alphanumeric sorts - and you'll know why. -- View this message in context: http://lucene.472066.n3.nabble.com/How-to-sort-value-that-numeric-mix-alpha-tp4144615p4144616.html Sent from the Solr - User mailing list archive at Nabble.com.
Re: How to sort value that numeric mix alpha
I think you wanted to remove letters, but your pattern removes NON-letters - that's what the ^ does, negation. So, try: =[a-z]. You can also get rid of the lower case filter and just use [a-zA-Z]. -- Jack Krupansky -Original Message- From: rachun Sent: Sunday, June 29, 2014 3:19 AM To: solr-user@lucene.apache.org Subject: How to sort value that numeric mix alpha Dear all, Could anybody suggest me how to sort the field that has numeric mix with alpha. In my case I have field name 'product_id' which contain value like C1,C2,C3,C4,C9,C12,C23,C50 when I try to sort (DESC) it return wrong result something like this C9,C50,C4,C3,C23,C2,C12,C1 As you see I have 'C' for prefix. So, In my Schema.xml I have tried this... fieldType name=alphaOnlySort class=solr.TextField sortMissingLast=true omitNorms=true analyzer tokenizer class=solr.KeywordTokenizerFactory/ filter class=solr.LowerCaseFilterFactory / filter class=solr.TrimFilterFactory / filter class=solr.PatternReplaceFilterFactory pattern=([^a-z]) replacement= replace=all / /analyzer /fieldType field name=pid_sort type=alphaOnlySort indexed=true stored=true / copyField source=product_id dest=pid_sort/ but it didn't work. How to deal with this? Thank you very much, Chun. -- View this message in context: http://lucene.472066.n3.nabble.com/How-to-sort-value-that-numeric-mix-alpha-tp4144615.html Sent from the Solr - User mailing list archive at Nabble.com.
Re: How to sort value that numeric mix alpha
Thank you for both of you I finally re-index data and remove 'C' and index only numeric. So, that the way I fix my problem. Best, Chun. -- View this message in context: http://lucene.472066.n3.nabble.com/How-to-sort-value-that-numeric-mix-alpha-tp4144615p4144693.html Sent from the Solr - User mailing list archive at Nabble.com.
