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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. Correlated subquery - Wikipedia

    en.wikipedia.org/wiki/Correlated_subquery

    In a SQL database query, a correlated subquery (also known as a synchronized subquery) is a subquery (a query nested inside another query) that uses values from the outer query. This can have major impact on performance because the correlated subquery might get recomputed every time for each row of the outer query is processed.

  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. SEC and its Dear Leader should accept reality: League no ...

    www.aol.com/sec-dear-leader-accept-reality...

    The time has come for the SEC’s fans, its media machine and especially its commissioner to fess up to the reality that has simmered under the surface this entire college football season.

  7. Is It Just Stress...Or Perimenopause? Doctors Explain ... - AOL

    www.aol.com/just-stress-perimenopause-doctors...

    Finally, ensure you’re prioritizing sleep: Adults need seven to nine hours per night, according to the AHA, to help prevent chronic diseases, promote brain function, and aid in healing.

  8. Man abandons haircut to help officer under attack - AOL

    www.aol.com/man-abandons-haircut-help-officer...

    A man having his hair cut leapt out of the barber's chair and ran to help a police officer who was being wrestled to the ground in a headlock. Kyle Whiting was having a trim at Heron Barbers in ...

  9. Select (SQL) - Wikipedia

    en.wikipedia.org/wiki/Select_(SQL)

    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.