Skip to main content

Cassandra Query Language driver

Project description

A Python driver for CQL that adheres to py-dbapi v2
(PEP249, Python Database API Specification v2.0: http://www.python.org/dev/peps/pep-0249/).

Standard use:
>> import cql
>> con = cql.connect(host, port, keyspace)
>> cursor = con.cursor()
>> cursor.execute("CQL QUERY", dict(kw='Foo', kw2='Bar, etc...))

- cursor.description # None initially, list of N tuples that represent
the N columns in a row after an execute. Only
contains type and name info, not values.
- cursor.rowcount # -1 initially, N after an execute
- cursor.arraysize # variable size of a fetchmany call
- cursor.fetchone() # returns a single row
- cursor.fetchmany() # returns self.arraysize # of rows
- cursor.fetchall() # returns all rows, don't do this.

>> cursor.execute("ANOTHER QUERY", **more_kwargs)
>> for row in cursor: # Iteration is equivalent to lots of fetchone() calls
>> doRowMagic(row)

>> cursor.close()
>> con.close()

Query substitution:
- Use named parameters and a dictionary of names and values.
e.g. execute("SELECT * FROM CF WHERE name=:name", {"name": "Foo"})

Project details


Download files

Download the file for your platform. If you're not sure which to choose, learn more about installing packages.

Files for cql, version 1.4.0
Filename, size File type Python version Upload date Hashes
Filename, size cql-1.4.0.tar.gz (76.8 kB) File type Source Python version None Upload date Hashes View

Supported by

AWS AWS Cloud computing Datadog Datadog Monitoring DigiCert DigiCert EV certificate Facebook / Instagram Facebook / Instagram PSF Sponsor Fastly Fastly CDN Google Google Object Storage and Download Analytics Pingdom Pingdom Monitoring Salesforce Salesforce PSF Sponsor Sentry Sentry Error logging StatusPage StatusPage Status page