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  2. SQLSTATE - Wikipedia

    en.wikipedia.org/wiki/SQLSTATE

    In addition to SQLSTATE the SQL command GET DIAGNOSTICS offers more details about the last executed SQL command. In very early versions of the SQL standard the return code was called SQLCODE and used a different coding schema. The following table lists the standard-conforming values - based on SQL:2011. [1]

  3. Data query language - Wikipedia

    en.wikipedia.org/wiki/Data_query_language

    The purpose of DQL commands is to get the schema relation based on the query passed to it. Although often considered part of DML, the SQL SELECT statement is strictly speaking an example of DQL. When adding FROM or WHERE data manipulators to the SELECT statement the statement is then considered part of the DML.

  4. Relational algebra - Wikipedia

    en.wikipedia.org/wiki/Relational_algebra

    The relational algebra uses set union, set difference, and Cartesian product from set theory, and adds additional constraints to these operators to create new ones.. For set union and set difference, the two relations involved must be union-compatible—that is, the two relations must have the same set of attributes.

  5. 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.

  6. Hi/Lo algorithm - Wikipedia

    en.wikipedia.org/wiki/Hi/Lo_algorithm

    There is a variable defined to hold the currently assigned low value and it is assigned the value of the maximum low value plus 1 (one). The steps are: If the currently assigned low value is greater or equal than the maximum low value then call a function to fetch a new high value and reset the currently assigned low value to 0 (zero).

  7. AOL Mail

    mail.aol.com

    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

  8. Our Crockpot Mac & Cheese Is Impossible To Mess Up - AOL

    www.aol.com/crockpot-mac-cheese-impossible-mess...

    Yields: 8-10 servings. Prep Time: 10 mins. Total Time: 1 hour 45 mins. Ingredients. Mac & Cheese. Kosher salt. 1 lb. (16 oz.) large elbow or corkscrew pasta

  9. Federal government proposes 19,112 square mile protected zone ...

    www.aol.com/news/federal-government-proposes-19...

    (The Center Square) – The U.S. Fish and Wildlife Service wants to take action to protect the threatened Canada lynx population in the continental United States. The Service proposed changes to ...