182566bf57
### What changes were proposed in this pull request? This PR is to move `Substitution` rule before `Hints` rule in `Analyzer` to avoid hint in CTE not working. ### Why are the changes needed? Below SQL in Spark3.0 will throw AnalysisException, but it works in Spark2.x ```sql WITH cte AS (SELECT /*+ REPARTITION(3) */ T.id, T.data FROM $t1 T) SELECT cte.id, cte.data FROM cte ``` ``` Failed to analyze query: org.apache.spark.sql.AnalysisException: cannot resolve '`cte.id`' given input columns: [cte.data, cte.id]; line 3 pos 7; 'Project ['cte.id, 'cte.data] +- SubqueryAlias cte +- Project [id#21L, data#22] +- SubqueryAlias T +- SubqueryAlias testcat.ns1.ns2.tbl +- RelationV2[id#21L, data#22] testcat.ns1.ns2.tbl 'Project ['cte.id, 'cte.data] +- SubqueryAlias cte +- Project [id#21L, data#22] +- SubqueryAlias T +- SubqueryAlias testcat.ns1.ns2.tbl +- RelationV2[id#21L, data#22] testcat.ns1.ns2.tbl ``` ### Does this PR introduce _any_ user-facing change? No ### How was this patch tested? Add a unit test Closes #29062 from LantaoJin/SPARK-32237. Authored-by: LantaoJin <jinlantao@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.