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  2. Hierarchical and recursive queries in SQL - Wikipedia

    en.wikipedia.org/wiki/Hierarchical_and_recursive...

    A common table expression, or CTE, (in SQL) is a temporary named result set, derived from a simple query and defined within the execution scope of a SELECT, INSERT, UPDATE, or DELETE statement. CTEs can be thought of as alternatives to derived tables ( subquery ), views , and inline user-defined functions.

  3. SQL:1999 - Wikipedia

    en.wikipedia.org/wiki/SQL:1999

    The SQL:1999 standard calls for a Boolean type, [1] but many commercial SQL servers (Oracle Database, IBM Db2) do not support it as a column type, variable type or allow it in the results set. Microsoft SQL Server is one of the few database systems that properly supports BOOLEAN values using its "BIT" data type [ citation needed ] .

  4. SQL syntax - Wikipedia

    en.wikipedia.org/wiki/SQL_syntax

    SQL includes operators and functions for calculating values on stored values. SQL allows the use of expressions in the select list to project data, as in the following example, which returns a list of books that cost more than 100.00 with an additional sales_tax column containing a sales tax figure calculated at 6% of the price.

  5. SQL - Wikipedia

    en.wikipedia.org/wiki/SQL

    SQL was initially developed at IBM by Donald D. Chamberlin and Raymond F. Boyce after learning about the relational model from Edgar F. Codd [12] in the early 1970s. [13] This version, initially called SEQUEL (Structured English Query Language), was designed to manipulate and retrieve data stored in IBM's original quasirelational database management system, System R, which a group at IBM San ...

  6. Twin and triplet births are on the decline. Here's how it ...

    www.aol.com/twin-triplet-births-decline-heres...

    Northwell Health partnered with Stacker to examine the decline of multiple births in the U.S. using Centers for Disease Control and Prevention data.

  7. Salah sets another goal record by inspiring Liverpool to ...

    www.aol.com/salah-sets-another-goal-record...

    LONDON (AP) — If this is to be Mohamed Salah's final season at Liverpool, he is going out with a bang. The Egypt forward scored two goals and set up two more in Liverpool's wild 6-3 win at ...

  8. Factbox-What to expect on Trump's Inauguration Day - AOL

    www.aol.com/news/factbox-expect-trumps...

    Amazon.com, led by founder Jeff Bezos, and Meta Platforms , helmed by Mark Zuckerberg, have said they will donate $1 million each to the committee.

  9. SQL:2011 - Wikipedia

    en.wikipedia.org/wiki/SQL:2011

    SQL:2011 or ISO/IEC 9075:2011 (under the general title "Information technology – Database languages – SQL") is the seventh revision of the ISO (1987) and ANSI (1986) standard for the SQL database query language. It was formally adopted in December 2011. [1] The standard consists of 9 parts which are described in detail in SQL.