Question

我在网上搜索了关于在clob字段上执行sql更新的示例;我相信我使用的例子是最简单的一个应该有用的例子，但到目前为止还没有用。我试图将base64编码的图像插入到oracle中的clob字段中。下面是函数和clob条目数组。我检查了表格并确认clob字段没有更新。

// update row with new clob values
private function clobUpdate($clobArray){
    try {
        foreach ($clobArray as $item) {
            $query = "UPDATE ". static::$table ." SET ". $item["clobField"] ." = EMPTY_BLOB() WHERE ID = :ID RETURNING ". $item["clobField"] . " INTO :blob";

            $stmt = $this->db->prepare($query);
            $stmt->bindParam(':id', $item["id"]);
            $stmt->bindParam(':blob', $item["clobValue"], PDO::PARAM_LOB);
            $blob = NULL;
            $this->db->beginTransaction();
            $stmt->execute();
            $this->db->commit();
            print_r($blob);
            die();
        }
    } catch(Exception $e){
        throw new Exception($e);
    }

}


 Array
 (
    [0] => Array
    (
        [clobField] => 0
        [clobValue] => data:image/png;base64,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
        [id] => 25
    )

)

*****更新

Per Fred的错误处理链接和this 2007补丁我现在能够更新我的clob。更新后的功能：

// update row with new clob values
private function clobUpdate($clobArray){
    $this->db->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
    try {
        foreach ($clobArray as $item) {
            $query = "UPDATE ". static::$table ." SET ". $item["clobField"] ." = :CLOB WHERE ID = :ID";
            $stmt = $this->db->prepare($query);
            $stmt->bindParam(':ID', $item["id"]);
            $stmt->bindParam(':CLOB', $item["clobValue"], PDO::PARAM_STR, strlen($item["clobValue"]));
            $blob = NULL;
            $this->db->beginTransaction();
            $stmt->execute();
            $this->db->commit();
            print_r($blob);
            die();
        }
    } catch(PDOException $e){
        echo "Exception ". $e->getMessage();
        throw new Exception($e);
    }
}

Answer 1

NOTA：发布为社区维基，将问题标记为已解决。

您正在使用:ID和:id。这些都是区分大小写的。

WHERE ID = :ID ... bindParam(':id', =＆gt; bindParam(':ID',

使用PDO的错误处理http://php.net/manual/en/pdo.error-handling.php

然而，从您找到的有关补丁的链接，似乎也有助于成功更新您的数据库。

根据你的评论：

“Per Fred的错误处理链接和this 2007 patch我现在能够更新我的clob。更新后的功能：”

// update row with new clob values
private function clobUpdate($clobArray){
    $this->db->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
    try {
        foreach ($clobArray as $item) {
            $query = "UPDATE ". static::$table ." SET ". $item["clobField"] ." = :CLOB WHERE ID = :ID";
            $stmt = $this->db->prepare($query);
            $stmt->bindParam(':ID', $item["id"]);
            $stmt->bindParam(':CLOB', $item["clobValue"], PDO::PARAM_STR, strlen($item["clobValue"]));
            $blob = NULL;
            $this->db->beginTransaction();
            $stmt->execute();
            $this->db->commit();
            print_r($blob);
            die();
        }
    } catch(PDOException $e){
        echo "Exception ". $e->getMessage();
        throw new Exception($e);
    }
}

PDO（PHP）中的clob字段的SQL更新不会更新也不会抛出更新执行

1 个答案: