SQL PL

{{Primary sources|date=November 2009}}

SQL PL stands for Structured Query Language Procedural Language and was developed by IBM as a set of commands that extend the use of SQL in the IBM Db2 (DB2 UDB Version 7) database system.[https://www.ibm.com/support/knowledgecenter/en/SSEPGG_11.1.0/com.ibm.db2.luw.apdv.sqlpl.doc/doc/c0011916.html IBM Knowledge Center] It provides procedural programmability in addition to the querying commands of SQL. It is a subset of the SQL Persistent Stored Modules (SQL/PSM) language standard.

As of DB2 version 9, SQL PL stored procedures can run natively inside the DB2 process (inside the DBM1 address space, more precisely) instead of being fenced in an external process.{{cite book|author=Craig S. Mullins|title=DB2 Developer's Guide: A Solutions-Oriented Approach to Learning the Foundation and Capabilities of DB2 for z/OS|year=2012|publisher=IBM Press|isbn=978-0-13-283644-9|edition=6th|page=658}} In DB2 version 9.7 IBM also added a PL/SQL front-end to this infrastructure (called "SQL Unified Runtime Engine"), meaning that procedural SQL using either the ISO standard or Oracle's syntax compile to bytecode running on the same engine in DB2.{{cite web|author=Serge Rielau |url=http://www.ibm.com/developerworks/data/library/techarticle/dm-0907oracleappsondb2/index.html |title=DB2 10: Run Oracle applications on DB2 10 for Linux, UNIX, and Windows |publisher=Ibm.com |date= |accessdate=2012-07-26}}