54 lines
1.5 KiB
PHP
54 lines
1.5 KiB
PHP
<?php
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// +----------------------------------------------------------------------
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// | ThinkPHP [ WE CAN DO IT JUST THINK ]
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// +----------------------------------------------------------------------
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// | Copyright (c) 2006~2016 http://thinkphp.cn All rights reserved.
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// +----------------------------------------------------------------------
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// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
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// +----------------------------------------------------------------------
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// | Author: liu21st <liu21st@gmail.com>
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// +----------------------------------------------------------------------
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namespace think\db\builder;
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use think\db\Builder;
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/**
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* mysql数据库驱动
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*/
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class Mysql extends Builder
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{
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protected $updateSql = 'UPDATE %TABLE% %JOIN% SET %SET% %WHERE% %ORDER%%LIMIT% %LOCK%%COMMENT%';
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/**
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* 字段和表名处理
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* @access protected
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* @param string $key
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* @return string
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*/
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protected function parseKey($key)
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{
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$key = trim($key);
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if (strpos($key, '$.') && false === strpos($key, '(')) {
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// JSON字段支持
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list($field, $name) = explode('$.', $key);
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$key = 'json_extract(' . $field . ', \'$.' . $name . '\')';
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}
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if (!preg_match('/[,\'\"\*\(\)`.\s]/', $key)) {
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$key = '`' . $key . '`';
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}
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return $key;
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}
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/**
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* 随机排序
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* @access protected
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* @return string
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*/
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protected function parseRand()
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{
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return 'rand()';
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}
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}
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