4d58cd77f9
### What changes were proposed in this pull request? I execute some query as` select get_json_object(ytag, '$.y1') AS y1 from t4`; SparkSQL return null but Hive return correct results. In my production environment, ytag is a json wrapped by single quotes,as follows ``` {'y1': 'shuma', 'y2': 'shuma:shouji'} {'y1': 'jiaoyu', 'y2': 'jiaoyu:gaokao'} {'y1': 'yule', 'y2': 'yule:mingxing'} ``` Then l realized some functions including get_json_object and json_tuple does not support single quotes json parsing. So l provide this PR to resolve the question. ### Why are the changes needed? Enabled for Hive compatibility ### Does this PR introduce any user-facing change? NO ### How was this patch tested? NEW TESTS Closes #26965 from wenfang6/enableSingleQuotesJsonForSparkSQL. Authored-by: wenfang <wenfang@360.cn> Signed-off-by: HyukjinKwon <gurwls223@apache.org> |
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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 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
.