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https://issues.apache.org/jira/browse/SOLR-6051?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14002458#comment-14002458
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Ahmet Arslan commented on SOLR-6051:
------------------------------------
Thanks Mark and Shawn! Can we close SOLR-6074 too?
> Field names beginning with numbers give different and incorrect results
> depending on placement in URL query
> -----------------------------------------------------------------------------------------------------------
>
> Key: SOLR-6051
> URL: https://issues.apache.org/jira/browse/SOLR-6051
> Project: Solr
> Issue Type: Bug
> Components: documentation
> Affects Versions: 4.7.2
> Environment: CentOS 6+
> Reporter: Mark Ebbert
> Assignee: Shawn Heisey
> Priority: Minor
> Labels: documentation, patch
> Fix For: 4.9
>
>
> I've looked all over for specific field name requirements and can't find any
> official documentation. Is there official documentation on field names? If
> not, *please* provide some!
> We created several field names that begin with numbers, but SOLR doesn't seem
> to handle that well. Here are two "identical" URL queries that produce
> different output:
> {quote}
> http://<our_server>:8080/solr/query?q=chr:19%20AND%20pos:16666101&fl=chr,pos,ref,alt,1000G_freq,AFR_freq,ASN_freq
> {quote}
> and
> {quote}
> http://<our_server>:8080/solr/query?q=chr:19%20AND%20pos:16666101&fl=chr,pos,ref,alt,AFR_freq,ASN_freq,1000G_freq
> {quote}
> The only difference between the two queries is the location of '1000G_freq'
> (middle vs. end). The first query does not return the 1000G_freq value but
> the second does. Additionally, both return a value that does not exist
> ("1000":1000). Seems to be doing something funky with the 1000 in the field
> name. The "1000":1000 disappears if I remove '1000G_freq' from the query.
> Here are the outputs from both queries:
> h2. Query 1 Results
> {code:title=Query 1 Results|borderStyle=solid}
> {
> "responseHeader":{
> "status":0,
> "QTime":1,
> "params":{
> "fl":"chr,pos,ref,alt,1000G_freq,AFR_freq,ASN_freq",
> "q":"chr:19 AND pos:16666101"}},
> "response":{"numFound":5,"start":0,"docs":[
> {
> "chr":"19",
> "pos":16666101,
> "ref":"G",
> "alt":"C",
> "1000":1000},
> {
> "chr":"19",
> "pos":16666101,
> "ref":"G",
> "alt":"C",
> "AFR_freq":0.05,
> "ASN_freq":0.55,
> "1000":1000},
> {
> "chr":"19",
> "pos":16666101,
> "ref":"G",
> "alt":"C",
> "AFR_freq":0.05,
> "ASN_freq":0.55,
> "1000":1000},
> {
> "chr":"19",
> "pos":16666101,
> "ref":"G",
> "alt":"C",
> "1000":1000},
> {
> "chr":"19",
> "pos":16666101,
> "ref":"G",
> "alt":"C",
> "1000":1000}]
> }}
> {code}
> h2. Query 2 Results
> {code:title=Query 2 Results|borderStyle=solid}
> {
> "responseHeader":{
> "status":0,
> "QTime":0,
> "params":{
> "fl":"chr,pos,ref,alt,AFR_freq,ASN_freq,1000G_freq",
> "q":"chr:19 AND pos:16666101"}},
> "response":{"numFound":5,"start":0,"docs":[
> {
> "chr":"19",
> "pos":16666101,
> "ref":"G",
> "alt":"C",
> "1000":1000},
> {
> "chr":"19",
> "pos":16666101,
> "ref":"G",
> "alt":"C",
> "1000G_freq":0.43,
> "AFR_freq":0.05,
> "ASN_freq":0.55,
> "1000":1000},
> {
> "chr":"19",
> "pos":16666101,
> "ref":"G",
> "alt":"C",
> "1000G_freq":0.43,
> "AFR_freq":0.05,
> "ASN_freq":0.55,
> "1000":1000},
> {
> "chr":"19",
> "pos":16666101,
> "ref":"G",
> "alt":"C",
> "1000":1000},
> {
> "chr":"19",
> "pos":16666101,
> "ref":"G",
> "alt":"C",
> "1000":1000}]
> }}
> {code}
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