Bug #48070 Foreign keys may disappear after ALTER TABLE
Submitted: 15 Oct 2009 7:23 Modified: 10 Apr 2019 22:16
Reporter: Vasil Dimov Email Updates:
Status: Closed Impact on me:
None 
Category:MySQL Server: General Severity:S3 (Non-critical)
Version:5.1 OS:Any
Assigned to: CPU Architecture:Any
Tags: innodb foreign key alter table

File: Maximum allowed size is 50MB.
Description:
Privacy:

If the data you need to attach is more than 50MB, you should create a compressed archive of the data, split it to 50MB chunks, and upload each of them as a separate attachment.

To split a large file:

[23 Nov 2009 22:16] Adam Monsen
SHOW VARIABLES output from 5.1.39 server where bug does repro

Attachment: box_with_repro.txt (text/plain), 36.84 KiB.

[23 Nov 2009 22:17] Adam Monsen
SHOW VARIABLES output from 5.1.31-1ubuntu2 server where bug does NOT repro

Attachment: box_without_repro.txt (text/plain), 18.84 KiB.