e402de5fd0
## What changes were proposed in this pull request? Currently, users meet job abortions while creating a table using the Hive serde "STORED AS" with invalid column names. We had better prevent this by raising **AnalysisException** with a guide to use aliases instead like Paquet data source tables. thus making compatible with error message shown while creating Parquet/ORC native table. **BEFORE** ```scala scala> sql("set spark.sql.hive.convertMetastoreParquet=false") scala> sql("CREATE TABLE a STORED AS PARQUET AS SELECT 1 AS `COUNT(ID)`") Caused by: java.lang.IllegalArgumentException: No enum constant parquet.schema.OriginalType.col1 ``` **AFTER** ```scala scala> sql("CREATE TABLE a STORED AS PARQUET AS SELECT 1 AS `COUNT(ID)`") Please use alias to rename it.;eption: Attribute name "count(ID)" contains invalid character(s) among " ,;{}()\n\t=". ``` ## How was this patch tested? Pass the Jenkins with the newly added test case. Closes #24075 from sujith71955/master_serde. Authored-by: s71955 <sujithchacko.2010@gmail.com> Signed-off-by: Wenchen Fan <wenchen@databricks.com> |
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catalyst | ||
core | ||
hive | ||
hive-thriftserver | ||
create-docs.sh | ||
gen-sql-markdown.py | ||
mkdocs.yml | ||
README.md |
Spark SQL
This module provides support for executing relational queries expressed in either SQL or the DataFrame/Dataset API.
Spark SQL is broken up into four subprojects:
- Catalyst (sql/catalyst) - An implementation-agnostic framework for manipulating trees of relational operators and expressions.
- Execution (sql/core) - A query planner / execution engine for translating Catalyst's logical query plans into Spark RDDs. This component also includes a new public interface, SQLContext, that allows users to execute SQL or LINQ statements against existing RDDs and Parquet files.
- Hive Support (sql/hive) - Includes an extension of SQLContext called HiveContext that allows users to write queries using a subset of HiveQL and access data from a Hive Metastore using Hive SerDes. There are also wrappers that allow users to run queries that include Hive UDFs, UDAFs, and UDTFs.
- HiveServer and CLI support (sql/hive-thriftserver) - Includes support for the SQL CLI (bin/spark-sql) and a HiveServer2 (for JDBC/ODBC) compatible server.
Running sql/create-docs.sh
generates SQL documentation for built-in functions under sql/site
.