2:59
SQL/JRT, or SQL Routines and Types for the Java Programming Language, is an extension to the SQL standard first published as ISO/IEC 9075-13:2002 (part 13 of SQL:1999). SQL/JRT specifies the ability to invoke static Java methods as routines from within SQL applications, commonly referred to as "Java stored procedures". SQL/JRT also calls for the ability to use Java classes as SQL structured user-defined types. The two parts of the extension originate from the earlier ANSI SQLJ part 1 and 2 standards (not to be confused with SQLJ part 0, which defined an embedding of SQL into Java, later standardized by ISO as SQL/OLB.)
SQL/JRT allows a Java function to be called from SQL code like this:[1]
CREATE FUNCTION sinh(v DOUBLE) RETURNS DOUBLE
LANGUAGE JAVA DETERMINISTIC NO SQL
EXTERNAL NAME 'CLASSPATH:java.lang.Math.sinh'
SELECT sinh(doublecolumn) FROM mytable
SQL/JRT also allows Java code to dynamically generate tables using a java.sql.ResultSet object. The result sets returned are converted to SQL tables and can be used anywhere a table or view can be used.[1]
![[icon]](http://codedocs.org/uploads/20px-Wiki_letter_w_cropped.svg.png){kind=small} | This section needs expansion. You can help by adding to it. (November 2012) |
SQL/JRT stored procedures are implemented in HSQLDB.[1] Java stored procedures have also been implemented in Oracle's JServer (or Aurora JVM), which was introduced in the Oracle Database version 8i in 1999;[2][3] it is now called Oracle JVM.[4]IBM DB2 also supported Java stored procedures since about 1998, although using an external JVM (at that time).[5]
 | This database-related article is a stub. You can help Wikipedia by expanding it. |
By: Wikipedia.org
Edited: 2021-06-19 11:17:19
Source: Wikipedia.org