105 lines
2.9 KiB
PHP
105 lines
2.9 KiB
PHP
|
<?php
|
||
|
|
// +----------------------------------------------------------------------
|
||
|
|
// | ThinkPHP [ WE CAN DO IT JUST THINK ]
|
||
|
|
// +----------------------------------------------------------------------
|
||
|
|
// | Copyright (c) 2006~2018 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\Query;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Pgsql数据库驱动
|
||
|
|
*/
|
||
|
|
class Pgsql extends Builder
|
||
|
|
{
|
||
|
|
|
||
|
|
protected $insertSql = 'INSERT INTO %TABLE% (%FIELD%) VALUES (%DATA%) %COMMENT%';
|
||
|
|
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, $limit)
|
||
|
|
{
|
||
|
|
$limitStr = '';
|
||
|
|
|
||
|
|
if (!empty($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, $strict = false)
|
||
|
|
{
|
||
|
|
if (is_numeric($key)) {
|
||
|
|
return $key;
|
||
|
|
} elseif ($key instanceof Expression) {
|
||
|
|
return $key->getValue();
|
||
|
|
}
|
||
|
|
|
||
|
|
$key = trim($key);
|
||
|
|
|
||
|
|
if (strpos($key, '->') && false === strpos($key, '(')) {
|
||
|
|
// JSON字段支持
|
||
|
|
list($field, $name) = explode('->', $key);
|
||
|
|
$key = $field . '->>\'' . $name . '\'';
|
||
|
|
} elseif (strpos($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 (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)
|
||
|
|
{
|
||
|
|
return 'RANDOM()';
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|