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  2. Ternary conditional operator - Wikipedia

    en.wikipedia.org/wiki/Ternary_conditional_operator

    The SQL CASE expression is a generalization of the ternary operator. Instead of one conditional and two results, n conditionals and n+1 results can be specified. With one conditional it is equivalent (although more verbose) to the ternary operator:

  3. SQL syntax - Wikipedia

    en.wikipedia.org/wiki/SQL_syntax

    SQL has the case expression, ... The current system date / time of the database server can be called by using functions like CURRENT_DATE, CURRENT_TIMESTAMP, ...

  4. Null (SQL) - Wikipedia

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

    SQL provides two flavours of conditional expressions. One is called "simple CASE" and operates like a switch statement. The other is called a "searched CASE" in the standard, and operates like an if...elseif. The simple CASE expressions use implicit equality comparisons which operate under the same rules as the DML WHERE clause

  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. Where (SQL) - Wikipedia

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

    The LIKE predicate typically performs a search without the normal performance benefit of indexes. Using '=', '<>', etc.. instead will increase performance. Case sensitivity (e.g., 'S' versus 's') may be different based upon database product or configuration.

  7. Case (SQL) - Wikipedia

    en.wikipedia.org/?title=Case_(SQL)&redirect=no

    SQL syntax#Conditional (CASE) expressions To a section : This is a redirect from a topic that does not have its own page to a section of a page on the subject. For redirects to embedded anchors on a page, use {{ R to anchor }} instead .

  8. List of SQL reserved words - Wikipedia

    en.wikipedia.org/wiki/List_of_SQL_reserved_words

    This list includes SQL reserved words – aka SQL reserved keywords, [1] [2] as the SQL:2023 specifies and some RDBMSs have added. Reserved words in SQL and related products In SQL:2023 [ 3 ]

  9. Snake case - Wikipedia

    en.wikipedia.org/wiki/Snake_case

    Snake case (sometimes stylized autologically as snake_case) is the naming convention in which each space is replaced with an underscore (_) character, and words are written in lowercase. It is a commonly used naming convention in computing , for example for variable and subroutine names, and for filenames .