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[SPARK-28312][SQL][TEST] Port numeric.sql

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## What changes were proposed in this pull request?

This PR is to port numeric.sql from PostgreSQL regression tests. https://github.com/postgres/postgres/blob/REL_12_BETA2/src/test/regress/sql/numeric.sql

The expected results can be found in the link: https://github.com/postgres/postgres/blob/REL_12_BETA2/src/test/regress/expected/numeric.out

When porting the test cases, found four PostgreSQL specific features that do not exist in Spark SQL:
[SPARK-28315](https://issues.apache.org/jira/browse/SPARK-28315): Decimal can not accept `NaN` as input
[SPARK-28317](https://issues.apache.org/jira/browse/SPARK-28317): Built-in Mathematical Functions: SCALE
[SPARK-28318](https://issues.apache.org/jira/browse/SPARK-28318): Decimal can only support precision up to 38
[SPARK-28322](https://issues.apache.org/jira/browse/SPARK-28322): DIV support decimal type

Also, found four inconsistent behavior:
[SPARK-28316](https://issues.apache.org/jira/browse/SPARK-28316): Decimal precision issue
[SPARK-28324](https://issues.apache.org/jira/browse/SPARK-28324): The LOG function using 10 as the base, but Spark using E
[SPARK-27923](https://issues.apache.org/jira/browse/SPARK-27923): Spark SQL insert bad inputs to NULL
[SPARK-28007](https://issues.apache.org/jira/browse/SPARK-28007):  Caret operator (^) means bitwise XOR in Spark/Hive and exponentiation in Postgres

## How was this patch tested?

N/A

Closes #25092 from wangyum/SPARK-28312.

Authored-by: Yuming Wang <yumwang@ebay.com>
Signed-off-by: Dongjoon Hyun <dhyun@apple.com>
This commit is contained in:
Yuming Wang 2019-07-18 13:49:51 -07:00 committed by Dongjoon Hyun
parent 3776fbdfde
commit 0c21404f7c
2 changed files with 5928 additions and 0 deletions
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