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A hierarchical query is a type of SQL query that handles hierarchical model data. They are special cases of more general recursive fixpoint queries, which compute transitive closures . In standard SQL:1999 hierarchical queries are implemented by way of recursive common table expressions (CTEs).
This file is in PDF format. Portable Document Format ( PDF ) is a file format created by Adobe Systems for document exchange. PDF is used for representing two-dimensional documents in a manner independent of the application software, hardware, and operating system.
Excel pivot tables include the feature to directly query an online analytical processing (OLAP) server for retrieving data instead of getting the data from an Excel spreadsheet. On this configuration, a pivot table is a simple client of an OLAP server.
The Oracle, ODBC, and DB2 CLI Template Library (OTL) is a C++ library for database access, written by Sergei Kuchin. The OTL exists since 1996. It consists of a single header file. Besides Oracle, the OTL supports DB2 (natively), and various database systems now, [when?] directly or indirectly, via ODBC.
Reserved words in SQL and related products In SQL:2023 [3] In IBM Db2 13 [4] In Mimer SQL 11.0 [5] In MySQL 8.0 [6] In Oracle Database 23c [7] In PostgreSQL 16 [1] In Microsoft SQL Server 2022 [2]
Oracle BI Publisher (formerly known as Oracle XML Publisher) is an enterprise reporting tool designed by Oracle. It was originally developed to solve the reporting problems faced by Oracle applications. The tool was first released with Oracle E-Business Suite 11.5.10 in 2003.
A subquery can use values from the outer query, in which case it is known as a correlated subquery. Since 1999 the SQL standard allows WITH clauses, i.e. named subqueries often called common table expressions (named and designed after the IBM DB2 version 2 implementation; Oracle calls these subquery factoring).
Query by Example (QBE) is a database query language for relational databases. It was devised by Moshé M. Zloof at IBM Research during the mid-1970s, in parallel to the development of SQL . [ 1 ] It is the first graphical query language, using visual tables where the user would enter commands, example elements and conditions.