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Asf_Db_QueryBuilder_Select

Introduction

Db Query Builder Select

在开启命名空间情况下（asf.use_namespace=1）类名为 Asf\Db\QueryBuilder\Select

Class synopsis

<?php
final class Asf_Db_QueryBuilder_Select extends Asf_Db_AbstractQueryBuilder
{
    public function join(string $columns [, string $alias_columns = ''])
    public function leftJoin(string $columns [, string $alias_columns = ''])
    public function rightJoin(string $columns [, string $alias_columns = ''])
    public function innerJoin(string $columns [, string $alias_columns = ''])

    public function cols(mixed $columns, ...)
    public function having(string $columns, mixed $value [, string $operator = '='])

    public function max(string $columns [, string $alias_columns =''])
    public function min(string $columns [, string $alias_columns = ''])
    public function count(string $columns [, string $alias_columns = '')
    public function sum(string $columns [, string $alias_columns = ''])
    public function on(string $cloumn_a, string $cloumn_b)
    public function distinct(string $columns [, string $alias_columns = ''])

    public function groupBy(string $columns)
    public function orderBy(string $columns [, string $operator = 'DESC'])

    public function union(void)
    public function unionAll(void)
    public function __construct(void)
    /* alias __construct */
    public function select(void)
}

Examples

Example #1

Call function 'cols()', The Default value is '*'

<?php
// SELECT * FROM `test` WHERE `id` BETWEEN ? AND ? LIMIT 10, 20  [BVALUES] 1, 100

$select = new Asf_Db_QueryBuilder_Select();

$select
->cols()
->from('test')
->between('id', 1, 100)
->limit(10, 20);

Example #2

Call function 'cols(array $data)', parameters passed array type.

<?php
// SELECT `id`, 'user', 'pass' FROM `test` WHERE `id` BETWEEN ? AND ? LIMIT 10, 20  [BVALUES] 1, 100

$select = new Asf_Db_QueryBuilder_Select();

$select
->cols(array('id', 'user', 'pass'))
->from('test')
->between('id', 1, 100)
->limit(10, 20);

Example #3

Call function 'cols(string $data)', parameters passed string type.

<?php
// string(71) "[SQL] SELECT a, b, c, d FROM `test` WHERE `k` LIKE '%?%' [BVALUES] 1"

$select = new Asf_Db_QueryBuilder_Select();
$select
->cols('a, b, c, d')
->from('test')
->like('k', 1);