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| author | Dongjoon Hyun <dongjoon@apache.org> | 2016-07-27 13:23:59 +0800 |
|---|---|---|
| committer | Cheng Lian <lian@databricks.com> | 2016-07-27 13:23:59 +0800 |
| commit | 5b8e848bbfbc0c99a5faf758e40b188b0bbebb7b (patch) | |
| tree | 66b1998a319f0f7c4698ba99062f73e60f084a1c /sql/hive/src/test/resources/sqlgen/multi_distinct.sql | |
| parent | 738b4cc548ca48c010b682b8bc19a2f7e1947cfe (diff) | |
| download | spark-5b8e848bbfbc0c99a5faf758e40b188b0bbebb7b.tar.gz spark-5b8e848bbfbc0c99a5faf758e40b188b0bbebb7b.tar.bz2 spark-5b8e848bbfbc0c99a5faf758e40b188b0bbebb7b.zip | |
[SPARK-16621][SQL] Generate stable SQLs in SQLBuilder
## What changes were proposed in this pull request?
Currently, the generated SQLs have not-stable IDs for generated attributes.
The stable generated SQL will give more benefit for understanding or testing the queries.
This PR provides stable SQL generation by the followings.
- Provide unique ids for generated subqueries, `gen_subquery_xxx`.
- Provide unique and stable ids for generated attributes, `gen_attr_xxx`.
**Before**
```scala
scala> new org.apache.spark.sql.catalyst.SQLBuilder(sql("select 1")).toSQL
res0: String = SELECT `gen_attr_0` AS `1` FROM (SELECT 1 AS `gen_attr_0`) AS gen_subquery_0
scala> new org.apache.spark.sql.catalyst.SQLBuilder(sql("select 1")).toSQL
res1: String = SELECT `gen_attr_4` AS `1` FROM (SELECT 1 AS `gen_attr_4`) AS gen_subquery_0
```
**After**
```scala
scala> new org.apache.spark.sql.catalyst.SQLBuilder(sql("select 1")).toSQL
res1: String = SELECT `gen_attr_0` AS `1` FROM (SELECT 1 AS `gen_attr_0`) AS gen_subquery_0
scala> new org.apache.spark.sql.catalyst.SQLBuilder(sql("select 1")).toSQL
res2: String = SELECT `gen_attr_0` AS `1` FROM (SELECT 1 AS `gen_attr_0`) AS gen_subquery_0
```
## How was this patch tested?
Pass the existing Jenkins tests.
Author: Dongjoon Hyun <dongjoon@apache.org>
Closes #14257 from dongjoon-hyun/SPARK-16621.
Diffstat (limited to 'sql/hive/src/test/resources/sqlgen/multi_distinct.sql')
| -rw-r--r-- | sql/hive/src/test/resources/sqlgen/multi_distinct.sql | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/sql/hive/src/test/resources/sqlgen/multi_distinct.sql b/sql/hive/src/test/resources/sqlgen/multi_distinct.sql index b5c7cf0b0c..3ca526fcc4 100644 --- a/sql/hive/src/test/resources/sqlgen/multi_distinct.sql +++ b/sql/hive/src/test/resources/sqlgen/multi_distinct.sql @@ -1,4 +1,4 @@ -- This file is automatically generated by LogicalPlanToSQLSuite. SELECT a, COUNT(DISTINCT b), COUNT(DISTINCT c), SUM(d) FROM parquet_t2 GROUP BY a -------------------------------------------------------------------------------- -SELECT `gen_attr` AS `a`, `gen_attr` AS `count(DISTINCT b)`, `gen_attr` AS `count(DISTINCT c)`, `gen_attr` AS `sum(d)` FROM (SELECT `gen_attr`, count(DISTINCT `gen_attr`) AS `gen_attr`, count(DISTINCT `gen_attr`) AS `gen_attr`, sum(`gen_attr`) AS `gen_attr` FROM (SELECT `a` AS `gen_attr`, `b` AS `gen_attr`, `c` AS `gen_attr`, `d` AS `gen_attr` FROM `default`.`parquet_t2`) AS gen_subquery_0 GROUP BY `gen_attr`) AS parquet_t2 +SELECT `gen_attr_0` AS `a`, `gen_attr_1` AS `count(DISTINCT b)`, `gen_attr_3` AS `count(DISTINCT c)`, `gen_attr_5` AS `sum(d)` FROM (SELECT `gen_attr_0`, count(DISTINCT `gen_attr_2`) AS `gen_attr_1`, count(DISTINCT `gen_attr_4`) AS `gen_attr_3`, sum(`gen_attr_6`) AS `gen_attr_5` FROM (SELECT `a` AS `gen_attr_0`, `b` AS `gen_attr_2`, `c` AS `gen_attr_4`, `d` AS `gen_attr_6` FROM `default`.`parquet_t2`) AS gen_subquery_0 GROUP BY `gen_attr_0`) AS parquet_t2 |