mirror of
https://github.com/Karaka-Management/phpOMS.git
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52 lines
1.2 KiB
PHP
52 lines
1.2 KiB
PHP
<?php
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/**
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* Orange Management
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*
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* PHP Version 7.4
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*
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* @package phpOMS\DataStorage\Database\Query\Grammar
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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 https://orange-management.org
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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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* @package phpOMS\DataStorage\Database\Query\Grammar
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* @license OMS License 1.0
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* @link https://orange-management.org
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* @since 1.0.0
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*/
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class OracleGrammar extends Grammar
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{
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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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$expression = '*';
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}
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$query->limit = $query->limit ?? 1;
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return 'SELECT ' . $expression . ' FROM (SELECT ' . $expression . ' ' . $this->compileFrom($query, $query->from) . ' ORDER BY dbms_random.value) WHERE rownum >= 1 AND rownum <= ' . ($query->limit ?? 1);
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}
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}
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