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  2. Update (SQL) - Wikipedia

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

    Prepend the value in column C1 with the string "text" if the value in column C2 is "a". UPDATE T SET C1 = 'text' || C1 WHERE C2 = 'a' Set the value of column C1 in table T1 to 2, only if the value of column C2 is found in the sublist of values in column C3 in table T2 having the column C4 equal to 0.

  3. Increment and decrement operators - Wikipedia

    en.wikipedia.org/wiki/Increment_and_decrement...

    The post-increment and post-decrement operators increase (or decrease) the value of their operand by 1, but the value of the expression is the operand's value prior to the increment (or decrement) operation. In languages where increment/decrement is not an expression (e.g., Go), only one version is needed (in the case of Go, post operators only).

  4. Python syntax and semantics - Wikipedia

    en.wikipedia.org/wiki/Python_syntax_and_semantics

    A snippet of Python code with keywords highlighted in bold yellow font. The syntax of the Python programming language is the set of rules that defines how a Python program will be written and interpreted (by both the runtime system and by human readers). The Python language has many similarities to Perl, C, and Java. However, there are some ...

  5. AutoNumber - Wikipedia

    en.wikipedia.org/wiki/AutoNumber

    This is one example of occasion where the start value of an AutoNumber field is raised, so that customer number 6 has, say, AutoNumber field value 10006. [2] Using random values is desirable in cases where it would be unfortunate if it were possible to guess the next values assigned to new rows in the table. This usage is rare, however. [2]

  6. SQL syntax - Wikipedia

    en.wikipedia.org/wiki/SQL_syntax

    For a decimal number with scale S, the exact numeric value is the integer value of the significant digits divided by 10 S. SQL provides the functions CEILING and FLOOR to round numerical values. (Popular vendor specific functions are TRUNC (Informix, DB2, PostgreSQL, Oracle and MySQL) and ROUND (Informix, SQLite, Sybase, Oracle, PostgreSQL ...

  7. Query string - Wikipedia

    en.wikipedia.org/wiki/Query_string

    A query string is a part of a uniform resource locator that assigns values to specified parameters.A query string commonly includes fields added to a base URL by a Web browser or other client application, for example as part of an HTML document, choosing the appearance of a page, or jumping to positions in multimedia content.

  8. While loop - Wikipedia

    en.wikipedia.org/wiki/While_loop

    first checks whether x is less than 5, which it is, so then the {loop body} is entered, where the printf function is run and x is incremented by 1. After completing all the statements in the loop body, the condition, (x < 5), is checked again, and the loop is executed again, this process repeating until the variable x has the value 5.

  9. Incremental computing - Wikipedia

    en.wikipedia.org/wiki/Incremental_computing

    When incremental computing is implemented by a tool that can implement it for a variety of different pieces of code automatically, that tool is an example of a program analysis tool for optimization. Incremental computing derives a new input/output pair from one or more old input/output relationships.