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Posted to reviews@spark.apache.org by "sadikovi (via GitHub)" <gi...@apache.org> on 2023/09/13 03:08:58 UTC
[GitHub] [spark] sadikovi opened a new pull request, #42896: [SPARK-45139] Add DatabricksDialect to handle SQL type conversion
sadikovi opened a new pull request, #42896:
URL: https://github.com/apache/spark/pull/42896
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### What changes were proposed in this pull request?
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This PR adds `DatabricksDialect` to Spark to allow users to query Databricks clusters and Databricks SQL warehouses with more precise SQL type conversion and quote identifiers instead of doing it manually in the code.
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The PR fixes type conversion and makes it easier to query Databricks clusters.
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No.
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I added unit tests in JDBCSuite to check conversion.
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No.
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[GitHub] [spark] sadikovi commented on pull request #42896: [SPARK-45139][SQL] Add DatabricksDialect to handle SQL type conversion
Posted by "sadikovi (via GitHub)" <gi...@apache.org>.
sadikovi commented on PR #42896:
URL: https://github.com/apache/spark/pull/42896#issuecomment-1718347021
Thank you @dongjoon-hyun!
I forgot to mention in the PR, I did test the dialect manually for a few tables and queries. For example, this query works:
```
scala> val df = spark.read.format("jdbc")
.option("url", "jdbc:databricks://<host>.cloud.databricks.com:443/default;transportMode=http;ssl=1;httpPath=sql/protocolv1/o/23982398239232323/0912-023325-neasdf78;AuthMech=3;UID=token;PWD=<token>")
.option("dbtable", "ivan_test")
.option("driver", "com.databricks.client.jdbc.Driver") // for some reason, the driver was not loading automatically on my machine
.load()
df: org.apache.spark.sql.DataFrame = [a: int, b: string ... 3 more fields]
scala> df.show
+---+---+----+---+---+
| a| b| c| d| e|
+---+---+----+---+---+
| 1| 2|true|3.4|5.6|
+---+---+----+---+---+
```
while it fails without the dialect with some type conversion errors.
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[GitHub] [spark] dongjoon-hyun closed pull request #42896: [SPARK-45139][SQL] Add DatabricksDialect to handle SQL type conversion
Posted by "dongjoon-hyun (via GitHub)" <gi...@apache.org>.
dongjoon-hyun closed pull request #42896: [SPARK-45139][SQL] Add DatabricksDialect to handle SQL type conversion
URL: https://github.com/apache/spark/pull/42896
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[GitHub] [spark] sadikovi commented on pull request #42896: [SPARK-45139][SQL] Add DatabricksDialect to handle SQL type conversion
Posted by "sadikovi (via GitHub)" <gi...@apache.org>.
sadikovi commented on PR #42896:
URL: https://github.com/apache/spark/pull/42896#issuecomment-1716874963
cc @HyukjinKwon @cloud-fan
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[GitHub] [spark] dongjoon-hyun commented on pull request #42896: [SPARK-45139][SQL] Add DatabricksDialect to handle SQL type conversion
Posted by "dongjoon-hyun (via GitHub)" <gi...@apache.org>.
dongjoon-hyun commented on PR #42896:
URL: https://github.com/apache/spark/pull/42896#issuecomment-1718353042
Thank you!
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[GitHub] [spark] dongjoon-hyun commented on pull request #42896: [SPARK-45139][SQL] Add DatabricksDialect to handle SQL type conversion
Posted by "dongjoon-hyun (via GitHub)" <gi...@apache.org>.
dongjoon-hyun commented on PR #42896:
URL: https://github.com/apache/spark/pull/42896#issuecomment-1717277183
Merged to master for Apache Spark 4.0.
The Python failures in CIs are irrelevant to this `DatabricksDialect`.
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