Apache Solr Reference Guide Covering Apache Solr 6.0

Syntax
A basic jdbc expression:
jdbc(
connection="jdbc:hsqldb:mem:.",
sql="select NAME, ADDRESS, EMAIL, AGE from PEOPLE where AGE > 25 order by AGE, NAME
DESC",
sort="AGE asc, NAME desc",
driver="org.hsqldb.jdbcDriver"
)
A jdbc expression that passes a property to the driver:
// get_column_name is a property to pass to the hsqldb driver
jdbc(
connection="jdbc:hsqldb:mem:.",
sql="select NAME as FIRST_NAME, ADDRESS, EMAIL, AGE from PEOPLE where AGE > 25
order by AGE, NAME DESC",
sort="AGE asc, NAME desc",
driver="org.hsqldb.jdbcDriver",
get_column_name="false"
)
facet
The facet function provides aggregations that are rolled up over buckets. Under the covers the facet function
pushes down the aggregation into the search engine using Solr's JSON Facet API. This provides sub-second
performance for many use cases. The facet function is appropriate for use with a low to moderate number of
distinct values in the bucket fields. To support high cardinality aggregations see the rollup function.
Parameters
Syntax
Example 1:
collection: (Mandatory) Collection the facets will be aggregated from.
q: (Mandatory) The query to build the aggregations from.
buckets: (Mandatory) Comma separated list of fields to rollup over. The comma separated list represents
the dimensions in a multi-dimensional rollup.
bucketSorts: Comma separated list of sorts to apply to each dimension in the buckets parameters.
Sorts can be on the computed metrics or on the bucket values.
bucketSizeLimit: The number of buckets to include. This value is applied to each dimension.
metrics: List of metrics to compute for the buckets. Currently supported metrics are sum(col) , avg(co
l) , min(col) , max(col) , count(*) .
Apache Solr Reference Guide 6.0
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