Запросы на получение данных

select():         часть запроса после SELECT
selectDistinct(): часть запроса после SELECT DISTINCT
from():           часть запроса после FROM
where():          часть запроса после WHERE
join():           добавляет к запросу INNER JOIN
leftJoin():       добавляет к запросу LEFT OUTER JOIN
rightJoin():      добавляет к запросу RIGHT OUTER JOIN
crossJoin():      добавляет к запросу CROSS JOIN
naturalJoin():    добавляет к запросу NATURAL JOIN
group():          часть запроса после GROUP BY
having():         часть запроса после HAVING
order():          часть запроса после ORDER BY
limit():          часть запроса после LIMIT
offset():         часть запроса после OFFSET
union():          часть запроса после UNION


SELECT = function select($columns='*')
SELECT DISTINCT = function selectDistinct($columns)

// SELECT *
select()
// SELECT `id`, `username`
select('id, username')
// SELECT `tbl_user`.`id`, `username` AS `name`
select('tbl_user.id, username as name')
// SELECT `id`, `username`
select(array('id', 'username'))
// SELECT `id`, count(*) as num
select(array('id', 'count(*) as num'))

FROM = function from($tables)

// FROM `tbl_user`
from('tbl_user')
// FROM `tbl_user` `u`, `public`.`tbl_profile` `p`
from('tbl_user u, public.tbl_profile p')
// FROM `tbl_user`, `tbl_profile`
from(array('tbl_user', 'tbl_profile'))
// FROM `tbl_user`, (select * from tbl_profile) p
from(array('tbl_user', '(select * from tbl_profile) p'))

WHERE = function where($conditions, $params=array())

// WHERE id=1 or id=2
where('id=1 or id=2')
// WHERE id=:id1 or id=:id2
where('id=:id1 or id=:id2', array(':id1'=>1, ':id2'=>2))
// WHERE id=1 OR id=2
where(array('or', 'id=1', 'id=2'))
// WHERE id=1 AND (type=2 OR type=3)
where(array('and', 'id=1', array('or', 'type=2', 'type=3')))
// WHERE `id` IN (1, 2)
where(array('in', 'id', array(1, 2))
// WHERE `id` NOT IN (1, 2)
where(array('not in', 'id', array(1,2)))
// WHERE `name` LIKE '%Qiang%'
where(array('like', 'name', '%Qiang%'))
// WHERE `name` LIKE '%Qiang' AND `name` LIKE '%Xue'
where(array('like', 'name', array('%Qiang', '%Xue')))
// WHERE `name` LIKE '%Qiang' OR `name` LIKE '%Xue'
where(array('or like', 'name', array('%Qiang', '%Xue')))
// WHERE `name` NOT LIKE '%Qiang%'
where(array('not like', 'name', '%Qiang%'))
// WHERE `name` NOT LIKE '%Qiang%' OR `name` NOT LIKE '%Xue%'
where(array('or not like', 'name', array('%Qiang%', '%Xue%')))

ORDER = function order($columns)

// ORDER BY `name`, `id` DESC
order('name, id desc')
// ORDER BY `tbl_profile`.`name`, `id` DESC
order(array('tbl_profile.name', 'id desc'))

LIMIT = function limit($limit, $offset=null)
OFFSET = function offset($offset)

// LIMIT 10
limit(10)
// LIMIT 10 OFFSET 20
limit(10, 20)
// OFFSET 20
offset(20)

function join($table, $conditions, $params=array())
function leftJoin($table, $conditions, $params=array())
function rightJoin($table, $conditions, $params=array())
function crossJoin($table)
function naturalJoin($table)

// JOIN `tbl_profile` ON user_id=id
join('tbl_profile', 'user_id=id')
// LEFT JOIN `pub`.`tbl_profile` `p` ON p.user_id=id AND type=1
leftJoin('pub.tbl_profile p', 'p.user_id=id AND type=:type', array(':type'=>1))

GROUP BY = function group($columns)

// GROUP BY `name`, `id`
group('name, id')
// GROUP BY `tbl_profile`.`name`, `id`
group(array('tbl_profile.name', 'id'))

HAVING = function having($conditions, $params=array())

// HAVING id=1 or id=2
having('id=1 or id=2')
// HAVING id=1 OR id=2
having(array('or', 'id=1', 'id=2'))

UNION = function union($sql)

// UNION (select * from tbl_profile)
union('select * from tbl_profile')