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...

Structured Query Language (SQL) (pronounced S-Q-L; historically "sequel") is a domain-specific language used to manage data, especially in a relational...

programming Computational problem Hierarchical and recursive queries in SQL Kleene–Rosser paradox Open recursion Recursion (in general) Sierpiński curve McCarthy...

PostgreSQL (/ˌpoʊstɡrɛskjuˈɛl/ POHST-gres-kew-EL) also known as Postgres, is a free and open-source relational database management system (RDBMS) emphasizing...

plan for the query, within applicable constraints. The SELECT statement has many optional clauses: SELECT list is the list of columns or SQL expressions...

page has been removed from MySQL.com) Hierarchical data in MySQL: parents and children in one query Create Hierarchy Chart from Hierarchical Database...

recursive CTEs include Microsoft SQL Server, Oracle, PostgreSQL and others. Join Hierarchical and recursive queries in SQL Zygiaris, Sotirios (2018-08-23)...

standard part of the SQL grammar. Insignificant whitespace is generally ignored in SQL statements and queries, making it easier to format SQL code for readability...

SQL Server 2008 also natively supports hierarchical data, and includes T-SQL constructs to directly deal with them, without using recursive queries....

represented in a hierarchical database but not a SQL database, since SQL does not support nested tables. The automated evaluation of any query relating to...

DPSI), recursive SQL. Internal catalog is converted to Unicode. In 2007, GA of V9. It added, e.g., Trusted Context (a security feature), and "native...

queries against the data tables, and some of these queries may be arbitrarily recursive. This approach works well for object-at-a-time queries, as in...

constructs, such as MySQL 5.x. However, recursive SQL queries can be expected to perform comparably for 'find immediate descendants' queries, and much faster for...

for storing the data and retrieval procedures for answering queries. Most relational databases use the SQL data definition and query language; these systems...

information (for example spatial data and engineering data) where access is inherently recursive: the mathematics underpinning SQL (specifically, first-order predicate...

logical query language called Datalog. Hierarchical data can therefore be naturally queried in .QL in a recursive manner. Queries written in .QL are optimised...

tags/ and @/ is the actual query. The +/ operator joins the results of different sub-queries in one single list. The @/ operator ends the query. To be...

database query languages, such as recursive WITH in SQL:1999. More expressive logics, like fixpoint logics, have therefore been studied in finite model...

services and a service can be composed of other nested services in a hierarchical manner with virtually limitless depth to this service stack hierarchy. A composite...

automatically by a parser. See also the UML class and object diagram below. Specialized database query languages such as SQL. Specialized computer languages that are...

declarative languages like SQL and Lex/Yacc use some elements of functional programming, such as not allowing mutable values. In addition, many other programming...

arranged in a hierarchy. At the top was the application itself, referenced via a null object descriptor. Other objects were referenced by (recursively) specifying...

Access HTC—High-Throughput Computing HSM—Hierarchical Storage Management HT—Hyper Threading HTM—Hierarchical Temporal Memory HTML—Hypertext Markup Language...

embedded SQL or printf use strings to hold commands that will be interpreted. Many scripting programming languages, including Perl, Python, Ruby, and Tcl employ...

language SQL is usually said as three letters, but in reference to Microsoft's implementation is traditionally pronounced like the word sequel. In writing...

backward tracing queries for MapReduce dataflows, but are not generic to different DISC systems and do not perform efficient forward queries. Lipstick, a...

notion of recursive enumerability for fuzzy subsets is the adequate one. In order to solve this, an extension of the notions of fuzzy grammar and fuzzy Turing...

and "?" to match a single character. Relics of this can be found today in the glob syntax for filenames, and in the SQL LIKE operator. Starting in 1997...

and the simple recursive nature of their data structures. Typical applications of this combination include natural language processing, visual query answering...

NoSQL systems are also sometimes called "Not only SQL" to emphasize that they may support SQL-like query languages or sit alongside SQL databases in polyglot-persistent...