78893b8dc9
### What changes were proposed in this pull request? Currently, there are many DDL commands where the position of the unresolved identifiers are incorrect: ``` scala> sql("CACHE TABLE unknown") org.apache.spark.sql.AnalysisException: Table or view not found: unknown; line 1 pos 0; ``` , whereas the `pos` should be `12`. This PR proposes to fix this issue for commands using `UnresolvedRelation`: ``` CACHE TABLE unknown UNCACHE TABLE unknown DELETE FROM unknown UPDATE unknown SET name='abc' MERGE INTO unknown1 AS target USING unknown2 AS source ON target.col = source.col WHEN MATCHED THEN DELETE INSERT INTO TABLE unknown SELECT 1 INSERT OVERWRITE TABLE unknown VALUES (1, 'a') ``` ### Why are the changes needed? To fix a bug. ### Does this PR introduce _any_ user-facing change? Yes, now the above example will print the following: ``` org.apache.spark.sql.AnalysisException: Table or view not found: unknown; line 1 pos 12; ``` ### How was this patch tested? Add a new test. Closes #31209 from imback82/unresolved_relation_message. Authored-by: Terry Kim <yuminkim@gmail.com> Signed-off-by: Wenchen Fan <wenchen@databricks.com> |
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catalyst | ||
core | ||
hive | ||
hive-thriftserver | ||
create-docs.sh | ||
gen-sql-api-docs.py | ||
gen-sql-config-docs.py | ||
gen-sql-functions-docs.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 extensions that allow 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
, and SQL configuration documentation that gets included as part of configuration.md
in the main docs
directory.