初始化代码

vendor/topthink/think-orm/src/db/builder/Pgsql.php

@@ -0,0 +1,118 @@
+<?php
+// +----------------------------------------------------------------------
+// | ThinkPHP [ WE CAN DO IT JUST THINK ]
+// +----------------------------------------------------------------------
+// | Copyright (c) 2006~2019 http://thinkphp.cn All rights reserved.
+// +----------------------------------------------------------------------
+// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
+// +----------------------------------------------------------------------
+// | Author: liu21st <liu21st@gmail.com>
+// +----------------------------------------------------------------------
+declare (strict_types = 1);
+
+namespace think\db\builder;
+
+use think\db\Builder;
+use think\db\Query;
+use think\db\Raw;
+
+/**
+ * Pgsql数据库驱动
+ */
+class Pgsql extends Builder
+{
+    /**
+     * INSERT SQL表达式
+     * @var string
+     */
+    protected $insertSql = 'INSERT INTO %TABLE% (%FIELD%) VALUES (%DATA%) %COMMENT%';
+
+    /**
+     * INSERT ALL SQL表达式
+     * @var string
+     */
+    protected $insertAllSql = 'INSERT INTO %TABLE% (%FIELD%) %DATA% %COMMENT%';
+
+    /**
+     * limit分析
+     * @access protected
+     * @param  Query     $query        查询对象
+     * @param  mixed     $limit
+     * @return string
+     */
+    public function parseLimit(Query $query, string $limit): string
+    {
+        $limitStr = '';
+
+        if (!empty($limit)) {
+            $limit = explode(',', $limit);
+            if (count($limit) > 1) {
+                $limitStr .= ' LIMIT ' . $limit[1] . ' OFFSET ' . $limit[0] . ' ';
+            } else {
+                $limitStr .= ' LIMIT ' . $limit[0] . ' ';
+            }
+        }
+
+        return $limitStr;
+    }
+
+    /**
+     * 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, bool $strict = false): string
+    {
+        if (is_int($key)) {
+            return (string) $key;
+        } elseif ($key instanceof Raw) {
+            return $key->getValue();
+        }
+
+        $key = trim($key);
+
+        if (strpos($key, '->') && false === strpos($key, '(')) {
+            // JSON字段支持
+            [$field, $name] = explode('->', $key);
+            $key            = '"' . $field . '"' . '->>\'' . $name . '\'';
+        } elseif (strpos($key, '.')) {
+            [$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 && !preg_match('/[,\"\*\(\).\s]/', $key)) {
+                $key = '"' . $key . '"';
+            }
+        }
+
+        if (isset($table)) {
+            $key = $table . '.' . $key;
+        }
+
+        return $key;
+    }
+
+    /**
+     * 随机排序
+     * @access protected
+     * @param  Query     $query        查询对象
+     * @return string
+     */
+    protected function parseRand(Query $query): string
+    {
+        return 'RANDOM()';
+    }
+
+}