phpOMS/DataStorage/Database/Schema/Grammar/MysqlGrammar.php

<?php
/**
 * Orange Management
 *
 * PHP Version 7.2
 *
 * @package    phpOMS\DataStorage\Database\Schema\Grammar
 * @copyright  Dennis Eichhorn
 * @license    OMS License 1.0
 * @version    1.0.0
 * @link       http://website.orange-management.de
 */
declare(strict_types=1);

namespace phpOMS\DataStorage\Database\Schema\Grammar;

use phpOMS\DataStorage\Database\Query\Builder;

/**
 * Database query grammar.
 *
 * @package    phpOMS\DataStorage\Database\Schema\Grammar
 * @license    OMS License 1.0
 * @link       http://website.orange-management.de
 * @since      1.0.0
 */
class MysqlGrammar extends Grammar
{
    /**
     * System identifier.
     *
     * @var string
     * @since 1.0.0
     */
    protected $systemIdentifier = '`';

    /**
     * Compile from.
     *
     * @param Builder $query Builder
     * @param array   $table Tables
     *
     * @return string
     *
     * @since  1.0.0
     */
    protected function compileSelectTables(Builder $query, array $table) : string
    {
        $builder = new Builder($query->getConnection());
        $builder->select('table_name')
            ->from('information_schema.tables')
            ->where('table_schema', '=', $query->getConnection()->getDatabase());

        return \rtrim($builder->toSql(), ';');
    }

    /**
     * Compile from.
     *
     * @param Builder $query Builder
     * @param array   $table Tables
     *
     * @return string
     *
     * @since  1.0.0
     */
    protected function compileSelectFields(Builder $query, array $table) : string
    {
        $builder = new Builder($query->getConnection());
        $builder->select('*')
            ->from('information_schema.columns')
            ->where('table_schema', '=', $query->getConnection()->getDatabase())
            ->andWhere('table_name', '=', 'test');

        return \rtrim($builder->toSql(), ';');
    }
}