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https://github.com/Karaka-Management/phpOMS.git
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62 lines
1.4 KiB
PHP
62 lines
1.4 KiB
PHP
<?php
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/**
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* Orange Management
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*
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* PHP Version 7.1
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*
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* @category TBD
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* @package TBD
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* @author OMS Development Team <dev@oms.com>
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* @copyright Dennis Eichhorn
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* @license OMS License 1.0
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* @version 1.0.0
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* @link http://orange-management.com
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*/
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declare(strict_types=1);
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namespace phpOMS\DataStorage\Database\Query\Grammar;
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use phpOMS\DataStorage\Database\Query\Builder;
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/**
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* Grammar class.
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*
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* @category Framework
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* @package phpOMS\DataStorage\Database\Query\Grammar
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* @author OMS Development Team <dev@oms.com>
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* @license OMS License 1.0
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* @link http://orange-management.com
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* @since 1.0.0
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*/
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class MysqlGrammar extends Grammar
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{
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/**
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* System identifier.
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*
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* @var string
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* @since 1.0.0
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*/
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protected $systemIdentifier = '`';
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/**
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* Compile random.
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*
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* @param Builder $query Builder
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* @param array $columns Columns
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*
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* @return string
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*
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* @since 1.0.0
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*/
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protected function compileRandom(Builder $query, array $columns) : string
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{
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$expression = $this->expressionizeTableColumn($columns, $query->getPrefix());
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if ($expression === '') {
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$expression = '*';
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}
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return 'SELECT ' . $expression . ' ' . $this->compileFrom($query, $query->from) . ' ORDER BY RAND() ' . $this->compileLimit($query, $query->limit);
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}
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}
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