Bug #78935 Explain output differs between UPDATE and SELECT
Submitted: 23 Oct 2015 6:10 Modified: 9 Nov 2015 1:15
Reporter: monty solomon Email Updates:
Status: Not a Bug Impact on me:
None 
Category:MySQL Server: Optimizer Severity:S3 (Non-critical)
Version:5.6.25 OS:Any
Assigned to: CPU Architecture:Any

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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.

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[9 Nov 2015 1:18] monty solomon
trace output for the multi-table update explain

Attachment: trace.txt (text/plain), 9.24 KiB.