Tasty SQL for Clojure.
Simply add Korma as a dependency to your lein/cake project:
[korma "0.3.0-beta9"]For docs and real usage, check out http://sqlkorma.com
To get rid of the ridiculously verbose logging, add the following into src/log4j.xml:
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE log4j:configuration SYSTEM "log4j.dtd">
<log4j:configuration xmlns:log4j="http://jakarta.apache.org/log4j/">
<logger name="com.mchange">
<level value="WARN"/>
</logger>
</log4j:configuration>And include log4j in your project.clj:
[log4j "1.2.15" :exclusions [javax.mail/mail
javax.jms/jms
com.sun.jdmk/jmxtools
com.sun.jmx/jmxri]](use 'korma.db)
(defdb db (postgres {:db "mydb"
:user "user"
:password "dbpass"}))
(use 'korma.core)
(defentity users)
(select users)
;; executes: SELECT * FROM users
(select users
(fields :usersname :id))
;; executes: SELECT users.usersname, users.id FROM users
(select users
(where {:usersname "chris"}))
;; executes: SELECT * FROM users WHERE (users.usersname = 'chris)'
(select users
(where {:active true})
(order :created)
(limit 5)
(offset 3))
;; executes: SELECT * FROM users WHERE (users.active = TRUE) ORDER BY users.created DESC LIMIT 5 OFFSET 3
(select users
(where (or (= :usersname "chris")
(= :email "chris@chris.com"))))
;; executes: SELECT * FROM users WHERE (users.usersname = 'chris' OR users.email = 'chris@chris.com')
(select users
(where {:usersname [like "chris"]
:status "active"
:location [not= nil]))
;; executes SELECT * FROM users WHERE (users.usersname LIKE 'chris' AND users.status = 'active' AND users.location IS NOT NULL)
(select users
(where (or {:usersname "chris"
:first "chris"}
{:email [like "%@chris.com"]})))
;; executes: SELECT * FROM users WHERE ((users.usersname = 'chris' AND users.first = 'chris') OR users.email LIKE '%@chris.com)'
(defentity address
(table-fields :street :city :zip))
(defentity users
(has-one address))
(select users
(with address))
;; SELECT address.street, address.city, address.zip FROM users LEFT JOIN address ON users.id = address.users_id
Copyright (C) 2011 Chris Granger
Distributed under the Eclipse Public License, the same as Clojure.