数据库重构

2026-07-08 07:32:48 +08:00 · 2016-04-16 11:18:35 +08:00
parent a20a307e0a
commit 6886c03657
19 changed files with 3014 additions and 2801 deletions
--- a/library/think/db/connector/Sqlsrv.php
+++ b/library/think/db/connector/Sqlsrv.php
@@ -0,0 +1,105 @@
+<?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\connector;
+
+use PDO;
+use think\db\Connection;
+
+/**
+ * Sqlsrv数据库驱动
+ */
+class Sqlsrv extends Connection
+{
+    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%';
+    // PDO连接参数
+    protected $options = [
+        PDO::ATTR_CASE              => PDO::CASE_LOWER,
+        PDO::ATTR_ERRMODE           => PDO::ERRMODE_EXCEPTION,
+        PDO::ATTR_STRINGIFY_FETCHES => false,
+        PDO::SQLSRV_ATTR_ENCODING   => PDO::SQLSRV_ENCODING_UTF8,
+    ];
+
+    /**
+     * 解析pdo连接的dsn信息
+     * @access public
+     * @param array $config 连接信息
+     * @return string
+     */
+    protected function parseDsn($config)
+    {
+        $dsn = 'sqlsrv:Database=' . $config['database'] . ';Server=' . $config['hostname'];
+        if (!empty($config['hostport'])) {
+            $dsn .= ',' . $config['hostport'];
+        }
+        return $dsn;
+    }
+
+    /**
+     * 取得数据表的字段信息
+     * @access public
+     * @return array
+     */
+    public function getFields($tableName)
+    {
+        list($tableName) = explode(' ', $tableName);
+        $result          = $this->query("SELECT   column_name,   data_type,   column_default,   is_nullable
+        FROM    information_schema.tables AS t
+        JOIN    information_schema.columns AS c
+        ON  t.table_catalog = c.table_catalog
+        AND t.table_schema  = c.table_schema
+        AND t.table_name    = c.table_name
+        WHERE   t.table_name = '$tableName'");
+        $info = [];
+        if ($result) {
+            foreach ($result as $key => $val) {
+                $info[$val['column_name']] = [
+                    'name'    => $val['column_name'],
+                    'type'    => $val['data_type'],
+                    'notnull' => (bool) ('' === $val['is_nullable']), // not null is empty, null is yes
+                    'default' => $val['column_default'],
+                    'primary' => false,
+                    'autoinc' => false,
+                ];
+            }
+        }
+        return $info;
+    }
+
+    /**
+     * 取得数据表的字段信息
+     * @access public
+     * @return array
+     */
+    public function getTables($dbName = '')
+    {
+        $result = $this->query("SELECT TABLE_NAME
+            FROM INFORMATION_SCHEMA.TABLES
+            WHERE TABLE_TYPE = 'BASE TABLE'
+            ");
+        $info = [];
+        foreach ($result as $key => $val) {
+            $info[$key] = current($val);
+        }
+        return $info;
+    }
+
+    /**
+     * SQL性能分析
+     * @access protected
+     * @param string $sql
+     * @return array
+     */
+    protected function getExplain($sql)
+    {
+        return [];
+    }
+}