Sqlsrv.php
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<?php
// +----------------------------------------------------------------------
// | ThinkPHP [ WE CAN DO IT JUST THINK IT ]
// +----------------------------------------------------------------------
// | Copyright (c) 2006-2012 http://thinkphp.cn All rights reserved.
// +----------------------------------------------------------------------
// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
// +----------------------------------------------------------------------
// | Author: liu21st <liu21st@gmail.com>
// +----------------------------------------------------------------------
namespace think\db\builder;
use think\db\Builder;
use think\db\Expression;
use think\db\Query;
/**
* Sqlsrv数据库驱动
*/
class Sqlsrv extends Builder
{
protected $selectSql = 'SELECT T1.* FROM (SELECT thinkphp.*, ROW_NUMBER() OVER (%ORDER%) AS ROW_NUMBER FROM (SELECT %DISTINCT% %FIELD% FROM %TABLE%%JOIN%%WHERE%%GROUP%%HAVING%) AS thinkphp) AS T1 %LIMIT%%COMMENT%';
protected $selectInsertSql = 'SELECT %DISTINCT% %FIELD% FROM %TABLE%%JOIN%%WHERE%%GROUP%%HAVING%';
protected $updateSql = 'UPDATE %TABLE% SET %SET% FROM %TABLE% %JOIN% %WHERE% %LIMIT% %LOCK%%COMMENT%';
protected $deleteSql = 'DELETE FROM %TABLE% %USING% FROM %TABLE% %JOIN% %WHERE% %LIMIT% %LOCK%%COMMENT%';
protected $insertSql = 'INSERT INTO %TABLE% (%FIELD%) VALUES (%DATA%) %COMMENT%';
protected $insertAllSql = 'INSERT INTO %TABLE% (%FIELD%) %DATA% %COMMENT%';
/**
* order分析
* @access protected
* @param Query $query 查询对象
* @param mixed $order
* @return string
*/
protected function parseOrder(Query $query, $order)
{
if (empty($order)) {
return ' ORDER BY rand()';
}
$array = [];
foreach ($order as $key => $val) {
if ($val instanceof Expression) {
$array[] = $val->getValue();
} elseif ('[rand]' == $val) {
$array[] = $this->parseRand($query);
} else {
if (is_numeric($key)) {
list($key, $sort) = explode(' ', strpos($val, ' ') ? $val : $val . ' ');
} else {
$sort = $val;
}
$sort = in_array(strtolower($sort), ['asc', 'desc'], true) ? ' ' . $sort : '';
$array[] = $this->parseKey($query, $key, true) . $sort;
}
}
return ' ORDER BY ' . implode(',', $array);
}
/**
* 随机排序
* @access protected
* @param Query $query 查询对象
* @return string
*/
protected function parseRand(Query $query)
{
return 'rand()';
}
/**
* 字段和表名处理
* @access public
* @param Query $query 查询对象
* @param mixed $key 字段名
* @param bool $strict 严格检测
* @return string
*/
public function parseKey(Query $query, $key, $strict = false)
{
if (is_numeric($key)) {
return $key;
} elseif ($key instanceof Expression) {
return $key->getValue();
}
$key = trim($key);
if (strpos($key, '.') && !preg_match('/[,\'\"\(\)\[\s]/', $key)) {
list($table, $key) = explode('.', $key, 2);
$alias = $query->getOptions('alias');
if ('__TABLE__' == $table) {
$table = $query->getOptions('table');
$table = is_array($table) ? array_shift($table) : $table;
}
if (isset($alias[$table])) {
$table = $alias[$table];
}
}
if ('*' != $key && ($strict || !preg_match('/[,\'\"\*\(\)\[.\s]/', $key))) {
$key = '[' . $key . ']';
}
if (isset($table)) {
$key = '[' . $table . '].' . $key;
}
return $key;
}
/**
* limit
* @access protected
* @param Query $query 查询对象
* @param mixed $limit
* @return string
*/
protected function parseLimit(Query $query, $limit)
{
if (empty($limit)) {
return '';
}
$limit = explode(',', $limit);
if (count($limit) > 1) {
$limitStr = '(T1.ROW_NUMBER BETWEEN ' . $limit[0] . ' + 1 AND ' . $limit[0] . ' + ' . $limit[1] . ')';
} else {
$limitStr = '(T1.ROW_NUMBER BETWEEN 1 AND ' . $limit[0] . ")";
}
return 'WHERE ' . $limitStr;
}
public function selectInsert(Query $query, $fields, $table)
{
$this->selectSql = $this->selectInsertSql;
return parent::selectInsert($query, $fields, $table);
}
}