mysql - Generate random BLOB in MySQL

Question

I have schema with tables contains BLOBs.
I need to do some performance testing of it, and I need to generate some dummy data.
Is there any way to make MySQL user defined function that will return BLOB of random values with given size (for example first I want to test schema for 256KB BLOBs, later I want to test schema for 2MB BLOBs).
Performance of this function is not very important. I can wait to generate test data for some time. (But for reasonable time)

Answer 1

我碰巧最近需要类似的东西。因此，我创建了一个用于生成随机 BLOB 的 UDF。您可以在我的 github.com 帐户上找到它：

https://github.com/adrpar/mysql_udf_randomBlob

使用 cmake 编译并按照 README 文件中描述的后编译过程进行编译后，您可以像这样使用 UDF：

SELECT randomBlob( sizeOfBLOBInBytes);

例如对于 128 字节的 BLOB：

SELECT randomBlob( 128 );

或将其与您的INSERT陈述结合起来。