2bdd9fe5e3
### What changes were proposed in this pull request? Implement new SQL function: `to_timestamp_ntz`. The syntax is similar to the built-in function `to_timestamp`: ``` to_timestamp_ntz ( <date_expr> ) to_timestamp_ntz ( <timestamp_expr> ) to_timestamp_ntz ( <string_expr> [ , <format> ] ) ``` The naming is from snowflake: https://docs.snowflake.com/en/sql-reference/functions/to_timestamp.html ### Why are the changes needed? Adds a new SQL function to create a literal/column of timestamp without time zone. It's convenient for both end-users and developers. ### Does this PR introduce _any_ user-facing change? Yes, a new SQL function `to_timestamp_ntz`. ### How was this patch tested? Unit tests Closes #32995 from gengliangwang/toTimestampNtz. Authored-by: Gengliang Wang <gengliang@apache.org> Signed-off-by: Gengliang Wang <gengliang@apache.org> |
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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.