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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/case.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/case.sql')
| -rw-r--r-- | sql/hive/src/test/resources/sqlgen/case.sql | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/sql/hive/src/test/resources/sqlgen/case.sql b/sql/hive/src/test/resources/sqlgen/case.sql index f6a8c32cf0..99630e88cf 100644 --- a/sql/hive/src/test/resources/sqlgen/case.sql +++ b/sql/hive/src/test/resources/sqlgen/case.sql @@ -1,4 +1,4 @@ -- This file is automatically generated by LogicalPlanToSQLSuite. SELECT CASE WHEN id % 2 > 0 THEN 0 WHEN id % 2 = 0 THEN 1 END FROM parquet_t0 -------------------------------------------------------------------------------- -SELECT `gen_attr` AS `CASE WHEN ((id % CAST(2 AS BIGINT)) > CAST(0 AS BIGINT)) THEN 0 WHEN ((id % CAST(2 AS BIGINT)) = CAST(0 AS BIGINT)) THEN 1 END` FROM (SELECT CASE WHEN ((`gen_attr` % CAST(2 AS BIGINT)) > CAST(0 AS BIGINT)) THEN 0 WHEN ((`gen_attr` % CAST(2 AS BIGINT)) = CAST(0 AS BIGINT)) THEN 1 END AS `gen_attr` FROM (SELECT `id` AS `gen_attr` FROM `default`.`parquet_t0`) AS gen_subquery_0) AS gen_subquery_1 +SELECT `gen_attr_0` AS `CASE WHEN ((id % CAST(2 AS BIGINT)) > CAST(0 AS BIGINT)) THEN 0 WHEN ((id % CAST(2 AS BIGINT)) = CAST(0 AS BIGINT)) THEN 1 END` FROM (SELECT CASE WHEN ((`gen_attr_1` % CAST(2 AS BIGINT)) > CAST(0 AS BIGINT)) THEN 0 WHEN ((`gen_attr_1` % CAST(2 AS BIGINT)) = CAST(0 AS BIGINT)) THEN 1 END AS `gen_attr_0` FROM (SELECT `id` AS `gen_attr_1` FROM `default`.`parquet_t0`) AS gen_subquery_0) AS gen_subquery_1 |