udf
Differences
This shows you the differences between two versions of the page.
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udf [2015/09/23 20:27] 127.0.0.1 external edit |
udf [2016/04/20 07:54] (current) dmtolpeko |
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| - | ====== Hive UDF to Run PL/HQL Scripts from Hive CLI ====== | + | ====== Hive UDF to Run HPL/SQL Scripts from Hive CLI ====== |
| - | PL/HQL includes a Hive UDF function that allows you to execute PL/HQL scripts (user-defined functions written in PL/HQL language) in Hive queries. | + | HPL/SQL includes a Hive UDF function that allows you to execute HPL/SQL scripts (user-defined functions written in HPL/SQL language) in Hive queries. |
| For example, let's call the following function from a Hive query: | For example, let's call the following function from a Hive query: | ||
| Line 13: | Line 13: | ||
| </code> | </code> | ||
| - | ===== Running PL/HQL from Hive CLI ===== | + | ===== Running HPL/SQL from Hive CLI ===== |
| - | Put this script to //plhqlrc// file, then register PL/HQL UDF in Hive as follows (set your path for jars and configuration files): | + | Put this script to //hplsqlrc// file, then register HPL/SQL UDF in Hive as follows (set your path for jars and configuration files): |
| <code language=sql> | <code language=sql> | ||
| - | ADD JAR /home/pl/plhql.jar; | + | ADD JAR /home/pl/hplsql.jar; |
| - | ADD JAR /home/pl/antlr-runtime-4.4.jar; | + | ADD JAR /home/pl/antlr-runtime-4.5.jar; |
| - | ADD FILE /home/pl/plhql-site.xml; | + | ADD FILE /home/pl/hplsql-site.xml; |
| - | ADD FILE /home/pl/plhqlrc; | + | ADD FILE /home/pl/hplsqlrc; |
| - | CREATE TEMPORARY FUNCTION plhql AS 'org.plhql.Udf'; | + | CREATE TEMPORARY FUNCTION hplsql AS 'org.apache.hive.hplsql.Udf'; |
| </code> | </code> | ||
| - | Now let's use //hello// function written in PL/HQL language in Hive: | + | Now let's use //hello// function written in HPL/SQL language in Hive: |
| <code language=sql> | <code language=sql> | ||
| - | SELECT plhql('hello(:1)', name) FROM users; | + | SELECT hplsql('hello(:1)', name) FROM users; |
| </code> | </code> | ||
| - | ===== Running PL/HQL from PL/HQL CLI ===== | + | ===== Running HPL/SQL from HPL/SQL CLI ===== |
| - | When you run PL/HQL scripts using PL/HQL CLI tool you can just use user-defined functions the same way as you use built-in functions: | + | When you run HPL/SQL scripts using HPL/SQL CLI tool you can just use user-defined functions the same way as you use built-in functions: |
| <code language=sql> | <code language=sql> | ||
| Line 41: | Line 41: | ||
| </code> | </code> | ||
| - | PL/HQL CLI tool automatically puts referenced PL/HQL user-defined functions and stored procedures to Distributed Cache, registers the Hive UDF and modifies the function call in the SQL statements. | + | HPL/SQL CLI tool automatically puts referenced HPL/SQL user-defined functions and stored procedures to Distributed Cache, registers the Hive UDF and modifies the function call in the SQL statements. |
| For more information, see [[udf-sproc|User-Defined Functions and Stored Procedures]]. | For more information, see [[udf-sproc|User-Defined Functions and Stored Procedures]]. | ||
| - | **Version**: PL/HQL 0.3.1 | + | **Version**: HPL/SQL 0.3.1 |
| ~~NOTOC~~ | ~~NOTOC~~ | ||
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