Bug #83248 Partition pruning is not working with LEFT JOIN
Submitted: 3 Oct 2016 15:57 Modified: 3 Oct 2016 17:12
Reporter: Valeriy Kravchuk Email Updates:
Status: Verified Impact on me:
None 
Category:MySQL Server: Optimizer Severity:S3 (Non-critical)
Version:8.0.0, 5.7.15 OS:Any
Assigned to: CPU Architecture:Any
Tags: Optimizer, partition, pruning

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Description:
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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: