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| author | Xin Wu <xinwu@us.ibm.com> | 2016-09-14 21:14:29 +0200 |
|---|---|---|
| committer | Herman van Hovell <hvanhovell@databricks.com> | 2016-09-14 21:14:29 +0200 |
| commit | 040e46979d5f90edc7f9be3cbedd87e8986e8053 (patch) | |
| tree | 65b9ac14a2ddf54a1f0e8d3c251645fb4ea23273 /sql/hive/src/test/resources/sqlgen/generate_with_other_1.sql | |
| parent | a79838bdeeb12cec4d50da3948bd8a33777e53a6 (diff) | |
| download | spark-040e46979d5f90edc7f9be3cbedd87e8986e8053.tar.gz spark-040e46979d5f90edc7f9be3cbedd87e8986e8053.tar.bz2 spark-040e46979d5f90edc7f9be3cbedd87e8986e8053.zip | |
[SPARK-10747][SQL] Support NULLS FIRST|LAST clause in ORDER BY
## What changes were proposed in this pull request?
Currently, ORDER BY clause returns nulls value according to sorting order (ASC|DESC), considering null value is always smaller than non-null values.
However, SQL2003 standard support NULLS FIRST or NULLS LAST to allow users to specify whether null values should be returned first or last, regardless of sorting order (ASC|DESC).
This PR is to support this new feature.
## How was this patch tested?
New test cases are added to test NULLS FIRST|LAST for regular select queries and windowing queries.
(If this patch involves UI changes, please attach a screenshot; otherwise, remove this)
Author: Xin Wu <xinwu@us.ibm.com>
Closes #14842 from xwu0226/SPARK-10747.
Diffstat (limited to 'sql/hive/src/test/resources/sqlgen/generate_with_other_1.sql')
| -rw-r--r-- | sql/hive/src/test/resources/sqlgen/generate_with_other_1.sql | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/sql/hive/src/test/resources/sqlgen/generate_with_other_1.sql b/sql/hive/src/test/resources/sqlgen/generate_with_other_1.sql index 805197a4ea..ab444d0c70 100644 --- a/sql/hive/src/test/resources/sqlgen/generate_with_other_1.sql +++ b/sql/hive/src/test/resources/sqlgen/generate_with_other_1.sql @@ -5,4 +5,4 @@ WHERE id > 2 ORDER BY val, id LIMIT 5 -------------------------------------------------------------------------------- -SELECT `gen_attr_0` AS `val`, `gen_attr_1` AS `id` FROM (SELECT `gen_attr_0`, `gen_attr_1` FROM (SELECT gen_subquery_0.`gen_attr_2`, gen_subquery_0.`gen_attr_3`, gen_subquery_0.`gen_attr_4`, gen_subquery_0.`gen_attr_1` FROM (SELECT `arr` AS `gen_attr_2`, `arr2` AS `gen_attr_3`, `json` AS `gen_attr_4`, `id` AS `gen_attr_1` FROM `default`.`parquet_t3`) AS gen_subquery_0 WHERE (`gen_attr_1` > CAST(2 AS BIGINT))) AS gen_subquery_1 LATERAL VIEW explode(`gen_attr_2`) gen_subquery_2 AS `gen_attr_0` ORDER BY `gen_attr_0` ASC, `gen_attr_1` ASC LIMIT 5) AS parquet_t3 +SELECT `gen_attr_0` AS `val`, `gen_attr_1` AS `id` FROM (SELECT `gen_attr_0`, `gen_attr_1` FROM (SELECT gen_subquery_0.`gen_attr_2`, gen_subquery_0.`gen_attr_3`, gen_subquery_0.`gen_attr_4`, gen_subquery_0.`gen_attr_1` FROM (SELECT `arr` AS `gen_attr_2`, `arr2` AS `gen_attr_3`, `json` AS `gen_attr_4`, `id` AS `gen_attr_1` FROM `default`.`parquet_t3`) AS gen_subquery_0 WHERE (`gen_attr_1` > CAST(2 AS BIGINT))) AS gen_subquery_1 LATERAL VIEW explode(`gen_attr_2`) gen_subquery_2 AS `gen_attr_0` ORDER BY `gen_attr_0` ASC NULLS FIRST, `gen_attr_1` ASC NULLS FIRST LIMIT 5) AS parquet_t3 |