[SQL] [Minor] added check analysis rule for union node

[scwf]

No description provided.

[AmplabJenkins]

Merged build triggered.

[AmplabJenkins]

Merged build started.

[SparkQA]

Test build #32778 has started for PR 6174 at commit 6541ec4.

[SparkQA]

Test build #32778 has finished for PR 6174 at commit 6541ec4.

• This patch fails Scala style tests.
• This patch merges cleanly.
• This patch adds no public classes.

[AmplabJenkins]

Merged build finished. Test FAILed.

[AmplabJenkins]

Test FAILed.
Refer to this link for build results (access rights to CI server needed):
https://amplab.cs.berkeley.edu/jenkins/job/SparkPullRequestBuilder/32778/
Test FAILed.

[cloud-fan]

It this logic already in Union.resolved?

[scwf]

aha, yes it is .

[AmplabJenkins]

Merged build triggered.

[AmplabJenkins]

Merged build started.

[SparkQA]

Test build #32782 has started for PR 6174 at commit cf1475a.

[SparkQA]

Test build #32782 has finished for PR 6174 at commit cf1475a.

• This patch fails Spark unit tests.
• This patch merges cleanly.
• This patch adds no public classes.

[AmplabJenkins]

Merged build finished. Test FAILed.

[AmplabJenkins]

Test FAILed.
Refer to this link for build results (access rights to CI server needed):
https://amplab.cs.berkeley.edu/jenkins/job/SparkPullRequestBuilder/32782/
Test FAILed.

[scwf]

seems in hive it allow union's children have diff outputsize
such as

explain FROM (select 'tst1' as key, cast(count(1) as string) as value from src s1
UNION ALL select s2.key as key, s2.value as value from src s2) unionsrc
INSERT OVERWRITE TABLE DEST1 SELECT unionsrc.key, COUNT(DISTINCT SUBSTR(unionsrc.value,5)) GROUP BY unionsrc.key
INSERT OVERWRITE TABLE DEST2 SELECT unionsrc.key, unionsrc.value, COUNT(DISTINCT SUBSTR(unionsrc.value,5)) GROUP BY unionsrc.key, unionsrc.value;