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https://issues.apache.org/jira/browse/DERBY-4099?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12702935#action_12702935
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Tiago R. Espinha commented on DERBY-4099:
-----------------------------------------
Given this, then the bug would be on MySQL's end and not on ours. On a strictly
personal level, I do prefer the behaviour specified by the standard.
> Update Multiple Columns SQL
> ---------------------------
>
> Key: DERBY-4099
> URL: https://issues.apache.org/jira/browse/DERBY-4099
> Project: Derby
> Issue Type: Bug
> Components: SQL
> Reporter: Meenakshi Sundar Sitaraman
> Priority: Critical
>
> When I try to execute the following query
> update table_name set n1=5, average=(n1+n2)/2 where ....
> The new value of n1 (viz. 5 in this case) is not used when calculating the
> average. While the new value of n1 is used in MySQL, the old value is used in
> Derby.
> Appreciate your support in resolving this issue.
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