26f312e95f
### What changes were proposed in this pull request? 1. Extend SQL syntax rules to support a sign before the interval strings of ANSI year-month and day-time intervals. 2. Recognize `-` in `AstBuilder` and negate parsed intervals. ### Why are the changes needed? To conform to the SQL standard which allows a sign before the string interval, see `"5.3 <literal>"`: ``` <interval literal> ::= INTERVAL [ <sign> ] <interval string> <interval qualifier> <interval string> ::= <quote> <unquoted interval string> <quote> <unquoted interval string> ::= [ <sign> ] { <year-month literal> | <day-time literal> } <sign> ::= <plus sign> | <minus sign> ``` ### Does this PR introduce _any_ user-facing change? Should not because it just extends supported intervals syntax. ### How was this patch tested? By running new tests in `interval.sql`: ``` $ build/sbt "sql/testOnly *SQLQueryTestSuite -- -z interval.sql" ``` Closes #32134 from MaxGekk/negative-parsed-intervals. Authored-by: Max Gekk <max.gekk@gmail.com> Signed-off-by: Max Gekk <max.gekk@gmail.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.