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  2. SQL syntax - Wikipedia

    en.wikipedia.org/wiki/SQL_syntax

    In MySQL, double quotes are string literal delimiters by default instead. Enabling the ansi_quotes SQL mode enforces the SQL standard behavior. These can also be used regardless of this mode through backticks: `YEAR`. Clauses, which are constituent components of statements and queries. (In some cases, these are optional.) [1]

  3. Magic quotes - Wikipedia

    en.wikipedia.org/wiki/Magic_quotes

    Single quotes, double quotes, backslashes and null characters in all user-supplied data all have a backslash prepended to them before being passed to the script in the $_GET, $_REQUEST, $_POST and $_COOKIE global variables. Developers can then in theory use string concatenation to construct safe SQL queries with data provided by the user.

  4. Query language - Wikipedia

    en.wikipedia.org/wiki/Query_language

    Cypher is a query language for the Neo4j graph database; DMX is a query language for data mining models; Datalog is a query language for deductive databases; F-logic is a declarative object-oriented language for deductive databases and knowledge representation. FQL enables you to use a SQL-style interface to query the data exposed by the Graph API.

  5. Select (SQL) - Wikipedia

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

    A query includes a list of columns to include in the final result, normally immediately following the SELECT keyword. An asterisk ("*") can be used to specify that the query should return all columns of all the queried tables. SELECT is the most complex statement in SQL, with optional keywords and clauses that include:

  6. String literal - Wikipedia

    en.wikipedia.org/wiki/String_literal

    One of the oldest examples is in shell scripts, where single quotes indicate a raw string or "literal string", while double quotes have escape sequences and variable interpolation. For example, in Python , raw strings are preceded by an r or R – compare 'C:\\Windows' with r'C:\Windows' (though, a Python raw string cannot end in an odd number ...

  7. Quotation mark - Wikipedia

    en.wikipedia.org/wiki/Quotation_mark

    The closing single quotation mark is identical in form to the apostrophe and similar to the prime symbol. The double quotation mark is identical to the ditto mark in English-language usage. It is also similar to—and often used to represent—the double prime symbol. These all serve different purposes.

  8. C Sharp syntax - Wikipedia

    en.wikipedia.org/wiki/C_Sharp_syntax

    They are only consumable and yet very useful in a scenario like where one has a LINQ query which returns an object on select and one just wants to return some specific values. Then, define an anonymous type containing auto-generated read-only fields for the values.

  9. Quotation marks in English - Wikipedia

    en.wikipedia.org/wiki/Quotation_marks_in_English

    Single or double quotation marks denote either speech or a quotation. Double quotes are preferred in the United States, and also tend to be preferred in Australia [11] [12] (though the Australian Government prefers single quotes) [13] and Canada. Single quotes are more usual in the United Kingdom, Ireland and South Africa, though double quotes ...