<?php
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// +----------------------------------------------------------------------
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// | ThinkPHP [ WE CAN DO IT JUST THINK IT ]
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// +----------------------------------------------------------------------
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// | Copyright (c) 2006-2012 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\connector;
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use PDO;
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use think\db\Connection;
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/**
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* Sqlsrv数据库驱动
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*/
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class Sqlsrv extends Connection
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{
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// PDO连接参数
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protected $params = [
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PDO::ATTR_CASE => PDO::CASE_NATURAL,
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PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
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PDO::ATTR_STRINGIFY_FETCHES => false,
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];
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protected $builder = '\\think\\db\\builder\\Sqlsrv';
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/**
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* 解析pdo连接的dsn信息
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* @access protected
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* @param array $config 连接信息
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* @return string
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*/
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protected function parseDsn($config)
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{
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$dsn = 'sqlsrv:Database=' . $config['database'] . ';Server=' . $config['hostname'];
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if (!empty($config['hostport'])) {
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$dsn .= ',' . $config['hostport'];
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}
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return $dsn;
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}
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/**
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* 取得数据表的字段信息
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* @access public
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* @param string $tableName
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* @return array
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*/
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public function getFields($tableName)
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{
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list($tableName) = explode(' ', $tableName);
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$tableNames = explode('.', $tableName);
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$tableName = isset($tableNames[1]) ? $tableNames[1] : $tableNames[0];
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$sql = "SELECT column_name, data_type, column_default, is_nullable
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FROM information_schema.tables AS t
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JOIN information_schema.columns AS c
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ON t.table_catalog = c.table_catalog
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AND t.table_schema = c.table_schema
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AND t.table_name = c.table_name
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WHERE t.table_name = '$tableName'";
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$pdo = $this->query($sql, [], false, true);
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$result = $pdo->fetchAll(PDO::FETCH_ASSOC);
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$info = [];
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if ($result) {
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foreach ($result as $key => $val) {
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$val = array_change_key_case($val);
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$info[$val['column_name']] = [
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'name' => $val['column_name'],
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'type' => $val['data_type'],
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'notnull' => (bool) ('' === $val['is_nullable']), // not null is empty, null is yes
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'default' => $val['column_default'],
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'primary' => false,
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'autoinc' => false,
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];
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}
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}
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$sql = "SELECT column_name FROM information_schema.key_column_usage WHERE table_name='$tableName'";
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// 调试开始
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$this->debug(true);
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$pdo = $this->linkID->query($sql);
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// 调试结束
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$this->debug(false, $sql);
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$result = $pdo->fetch(PDO::FETCH_ASSOC);
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if ($result) {
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$info[$result['column_name']]['primary'] = true;
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}
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return $this->fieldCase($info);
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}
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/**
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* 取得数据表的字段信息
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* @access public
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* @param string $dbName
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* @return array
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*/
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public function getTables($dbName = '')
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{
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$sql = "SELECT TABLE_NAME
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FROM INFORMATION_SCHEMA.TABLES
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WHERE TABLE_TYPE = 'BASE TABLE'
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";
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$pdo = $this->query($sql, [], false, true);
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$result = $pdo->fetchAll(PDO::FETCH_ASSOC);
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$info = [];
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foreach ($result as $key => $val) {
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$info[$key] = current($val);
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}
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return $info;
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}
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/**
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* SQL性能分析
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* @access protected
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* @param string $sql
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* @return array
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*/
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protected function getExplain($sql)
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{
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return [];
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}
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}
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