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MySQL 5.5 LONGBLOB列数据对于第1行的列'x'而言太长

[英]MySQL 5.5 LONGBLOB Column Data too long for column 'x' at row 1

原文 2012-02-10 19:50:05 7 1 mysql/ blob/ mysql-connector/ maxlength

I have a column in my MySQL database that stores images as a byte array. 我的MySQL数据库中有一列将图像存储为字节数组。

I am trying to update a row to insert a new image. 我正在尝试更新一行以插入新图像。 The new image is 163K, and when I convert it to a byte[], the number of elements in the array is 167092. When I run the stored procedure that does the update, I get an error "Data too long for column 'x' at row 1. I already have an existing image in the database that has 8844 byte[] elements when converted. 新映像为163K，当我将其转换为byte []时，数组中的元素数为167092。运行存储过程进行更新时，出现错误“列'x的数据太长” '在第1行。我已经在数据库中拥有一个现有图像，该图像在转换时具有8844个byte []元素。

The column datatype is LONGBLOB. 列数据类型为LONGBLOB。 From my understanding, I should have appox 4Gb to work with. 据我了解，我应该使用4x的appox。

I have tried updating my my.ini file to make the MAX_ALLOWED_PACKETS=16M and I even tried 100M. 我尝试更新my.ini文件以使MAX_ALLOWED_PACKETS = 16M，甚至尝试100M。

I am using the MySQL .NET Connector libraries to execute my stored procedures. 我正在使用MySQL .NET连接器库执行我的存储过程。

Does anyone have any ideas on how to fix this issue? 是否有人对如何解决此问题有任何想法？ I know I could store the image paths instead of storing the images directly into the database. 我知道我可以存储图像路径，而不是将图像直接存储到数据库中。 But I would like to know how to solve my current issue and still store the images in the database first before trying to change my approach. 但是我想知道如何解决当前的问题，并且仍然在尝试更改方法之前先将图像存储在数据库中。

1 个解决方案

I've had exactly the same problem... 我遇到了完全一样的问题...

In my case I was passing the LONGBLOB via a TEXT parameter since I wanted to use CONCAT inside the stored procedure in order to create dynamic SQL. 就我而言，我要通过TEXT参数传递LONGBLOB，因为我想在存储过程中使用CONCAT来创建动态SQL。

The solution was simply to change TEXT into LONGTEXT. 解决方案只是将TEXT更改为LONGTEXT。 That's it :) That really took some time to figure out... 就是这样:)真的花了一些时间来找出...

Hope I could help even after almost three years. 希望即使三年后我也能提供帮助。