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https://issues.apache.org/jira/browse/SPARK-8237?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14583167#comment-14583167
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Liang-Chi Hsieh commented on SPARK-8237:
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I'll take this. Thanks.
> misc function: sha2
> -------------------
>
> Key: SPARK-8237
> URL: https://issues.apache.org/jira/browse/SPARK-8237
> Project: Spark
> Issue Type: Sub-task
> Components: SQL
> Reporter: Reynold Xin
>
> sha2(string/binary, int): string
> Calculates the SHA-2 family of hash functions (SHA-224, SHA-256, SHA-384, and
> SHA-512) (as of Hive 1.3.0). The first argument is the string or binary to be
> hashed. The second argument indicates the desired bit length of the result,
> which must have a value of 224, 256, 384, 512, or 0 (which is equivalent to
> 256). SHA-224 is supported starting from Java 8. If either argument is NULL
> or the hash length is not one of the permitted values, the return value is
> NULL. Example: sha2('ABC', 256) =
> 'b5d4045c3f466fa91fe2cc6abe79232a1a57cdf104f7a26e716e0a1e2789df78'.
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