Apache Solr Reference Guide Covering Apache Solr 6.0

{"result-set":{"docs":[
{"count(*)":9158,"to":"pete.davis@enron.com"},
{"count(*)":6244,"to":"tana.jones@enron.com"},
{"count(*)":5874,"to":"jeff.dasovich@enron.com"},
{"count(*)":5867,"to":"sara.shackleton@enron.com"},
{"count(*)":5595,"to":"steven.kean@enron.com"},
{"count(*)":4904,"to":"vkaminski@aol.com"},
{"count(*)":4622,"to":"mark.taylor@enron.com"},
{"count(*)":3819,"to":"kay.mann@enron.com"},
{"count(*)":3678,"to":"richard.shapiro@enron.com"},
{"count(*)":3653,"to":"kate.symes@enron.com"},
{"EOF":"true","RESPONSE_TIME":10}]}
}
Notice that the result set is an array of tuples with key/value pairs that match the SQL column list. The final tuple
contains the EOF flag which signals the end of the stream.
Solr SQL Syntax
Solr supports a broad range of SQL syntax.
SQL Parser is Case Insensitive
The SQL parser being used by Solr to translate the SQL statements is case insensitive. However, for
ease of reading, all examples on this page use capitalized keywords.
SELECT Statements
Solr supports limited and unlimited select queries. The syntax between the two types of queries are identical
except for the LIMIT clause in the SQL statement. However, they have very different execution plans and
different requirements for how the data is stored. The sections below explores both types of queries.
Basic SELECT statement with LIMIT
A limited select query follows this basic syntax:
SELECT fieldA as fa, fieldB as fb, fieldC as fc FROM tableA WHERE fieldC = 'term1
term2' ORDER BY fa desc LIMIT 100
We've covered many syntax options with this example, so let's walk through what's possible below.
WHERE Clause and Boolean Predicates
The WHERE clause allows Solr's search syntax to be injected into the SQL query. In the example:
WHERE fieldC = 'term1 term2'
The predicate above will execute a full text search for the phrase 'term1 term2' in fieldC.
To execute a non-phrase query, simply add parens inside of the single quotes. For example:
WHERE fieldC = '(term1 term2)'
Apache Solr Reference Guide 6.0
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