N1QL Queries

N1QL (pronounced "nickel") queries are a SQL like syntax to query JSON documents in Couchbase Server.

Here are the arguments you can pass into the query() or n1qlQuery() methods. For the latest and more in-depth information please visit our API Docs.

Argument Type Default Description
statement string The N1QL statement to be executed
parameters any Used with N1QL queries, can be a structure or array of parameters for the query
options any {} The query options to use for this query. This can be a structure of name-value pairs or an actual Couchbase query options object usually using the newViewQuery() method.
deserialize boolean true If true, it will deserialize the documents if they are valid JSON, else they are ignored.
deserializeOptions struct A struct of options to help control how the data is deserialized when populating an object. See ObjectPopulator.cfc for more info.
inflateTo any A path to a CFC or closure that produces an object to try to inflate the document results on NON-Reduced views only!
filter function A closure or UDF that must return boolean to use to filter out results from the returning array of records, the closure receives a struct that has id, document, key, and value: function( row ). A true will add the row to the final results.
transform function A closure or UDF to use to transform records from the returning array of records, the closure receives a struct that has id, document, key, and value: function( row ). Since the struct is by reference, you do not need to return anything.
returnType any struct If returnType is "struct", will return struct containing the results, requestID, signature, and metrics.
If returnType is native, a Java ViewResponse object will be returned ( com.couchbase.client.protocol.views.ViewResponse )
If returnType is iterator, a Java iterator object will be returned
type string view The type of query being performed, values are: view or n1ql. *Note this only required when calling query() to perform a n1ql query

Retrieve Document(s)

couchbase.n1qlQuery("
SELECT * 
FROM users
USE KEYS "user_101"
");
couchbase.n1qlQuery("
SELECT * 
FROM users
USE KEYS ["user_101","user_454"]
");

DML Operations

Insert

couchbase.n1qlQuery("
INSERT INTO users (KEY, VALUE)
VALUES ("user_2343", {
  "user_id": 2343,
  "name": "John Smith",
  "email": "john.smith@gmail.com"
})
");

Update

couchbase.n1qlQuery("
UPDATE users
USE KEYS "user_2343"
SET email = "john.doe@gmail.com"
RETURNING email
");

Upsert

couchbase.n1qlQuery("
UPSERT INTO users (KEY, VALUE)
VALUES ("user_2343", {
  "user_id": 2343,
  "name": "John Smith",
  "email": "john.smith@gmail.com"
})
RETURNING META().id AS document_id
");

Delete

couchbase.n1qlQuery("
DELETE 
FROM users
USE KEYS "user_2343"
");

N1QL queries that do not use a USE KEYS statement require the use of GSI Indexes

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