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https://issues.apache.org/jira/browse/SOLR-11746?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16286637#comment-16286637
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Hoss Man commented on SOLR-11746:
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bq. ...currently the behavior is largely non-sensical: ...
Here's some examples of how solr behaves with a few "odd" queries (using the
techproducts schema where "price" is a FloatPointField)...
{noformat}
price:fo*o - Valid, Matches no docs
price:* - Valid, Matches no docs
price:foo* - Error: "Can't run prefix queries on numeric field"
{noformat}
The combination of the last two particularly confuses me, since clearly
PointField is going out of it's way to do some error validation of attempting a
prefix query on a numeric field, but somehow that error handling isn't being
triggered by the simplest case (empty prefix) _AND_ neither is it able to
"match docs with prices" (which is what TrieFloatField would do by accident)
> numeric fields need better error handling for prefix/wildcard syntax --
> consider uniform support for "foo:* == foo:[* TO *]"
> ----------------------------------------------------------------------------------------------------------------------------
>
> Key: SOLR-11746
> URL: https://issues.apache.org/jira/browse/SOLR-11746
> Project: Solr
> Issue Type: Improvement
> Security Level: Public(Default Security Level. Issues are Public)
> Reporter: Hoss Man
>
> On the solr-user mailing list, Torsten Krah pointed out that with Trie
> numeric fields, query syntax such as {{foo_d:\*}} has been functionality
> equivilent to {{foo_d:\[\* TO \*]}} and asked why this was not also supported
> for Point based numeric fields.
> The fact that this type of syntax works (for {{indexed="true"}} Trie fields)
> appears to have been an (untested, undocumented) fluke of Trie fields given
> that they use indexed terms for the (encoded) numeric terms and inherit the
> default implementation of {{FieldType.getPrefixQuery}} which produces a
> prefix query against the {{""}} (empty string) term.
> (Note that this syntax has aparently _*never*_ worked for Trie fields with
> {{indexed="false" docValues="true"}} )
> In general, we should assess the behavior users attempt a prefix/wildcard
> syntax query against numeric fields, as currently the behavior is largely
> non-sensical: prefix/wildcard syntax frequently match no docs w/o any sort
> of error, and the aformentioned {{numeric_field:*}} behaves inconsistently
> between points/trie fields and between indexed/docValued trie fields.
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