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https://issues.apache.org/jira/browse/DERBY-1623?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12488871
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Manish Khettry commented on DERBY-1623:
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Andrew,
I am going by snippets of the spec posted in this bug. I did take <character
value expression> to mean any expression that yields a char/varchar/clob value.
I also tried a few queries in mysql which did accept case and other
expressions. Does DB2 accept them as well?
> Add ANSI TRIM implementation
> ----------------------------
>
> Key: DERBY-1623
> URL: https://issues.apache.org/jira/browse/DERBY-1623
> Project: Derby
> Issue Type: Improvement
> Components: SQL
> Reporter: Emmanuel Bernard
> Assigned To: Manish Khettry
> Attachments: 1623-parser-guess.diff, AnsiTrimTest.java
>
>
> JPA is requiring databases to support this ANSI feature esp the ability to
> chose the trimmed character
> TRIM([ [ LEADING | TRAILING | BOTH ] [ chars ] FROM ] str)
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