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https://issues.apache.org/jira/browse/HIVE-1558?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12899991#action_12899991
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John Sichi commented on HIVE-1558:
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SQL standard has the VALUES clause, so you can do
INSERT INTO t VALUES(3, 'hi'); -- inserts one row
INSERT INTO t VALUES (3, 'hi'), (4, 'bye'); -- inserts two rows
and
SELECT * FROM (VALUES(3, 'hi'), (4, 'bye')) -- inline table results
If we add dual, it would also be nice to support at least the standard INSERT
syntax since that has been around forever.
> introducing the "dual" table
> ----------------------------
>
> Key: HIVE-1558
> URL: https://issues.apache.org/jira/browse/HIVE-1558
> Project: Hadoop Hive
> Issue Type: New Feature
> Reporter: Ning Zhang
>
> The "dual" table in MySQL and Oracle is very convenient in testing UDFs or
> constructing rows without reading any other tables.
> If dual is the only data source we could leverage the local mode execution.
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