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  2. Month-to-date - Wikipedia

    en.wikipedia.org/wiki/Month-to-date

    Month-to-date (MTD) is a period starting at the beginning of the current calendar month and ending on either the current date or the last business day before the current date. Month-to-date is used in many contexts, mainly for recording results of an activity in the time between a date (exclusive, since this day may not yet be "complete") and ...

  3. Year-to-date - Wikipedia

    en.wikipedia.org/wiki/Year-to-date

    YTD measures are more sensitive to changes early in the year than later in the year. In contrast, measures like the 12-month ending (or year-ending) are less affected by seasonal influences. For example, to calculate year-to-date invoicing for a company, sum the invoice totals for each month of the current year up to the present date. [2]

  4. Set operations (SQL) - Wikipedia

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

    Set operations in SQL is a type of operations which allow the results of multiple queries to be combined into a single result set. [ 1 ] Set operators in SQL include UNION , INTERSECT , and EXCEPT , which mathematically correspond to the concepts of union , intersection and set difference .

  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. Third normal form - Wikipedia

    en.wikipedia.org/wiki/Third_normal_form

    Analytics via query, reporting, and dashboards were often facilitated by a different type of data model that provided pre-calculated analysis such as trend lines, period-to-date calculations (month-to-date, quarter-to-date, year-to-date), cumulative calculations, basic statistics (average, standard deviation, moving averages) and previous ...

  7. SQL Server Management Studio - Wikipedia

    en.wikipedia.org/wiki/SQL_Server_Management_Studio

    Microsoft SQL Server Management Studio (SSMS) is a software application developed by Microsoft that is used for configuring, managing, and administering all components within Microsoft SQL Server. First launched with Microsoft SQL Server 2005, it is the successor to the Enterprise Manager in SQL 2000 or before. The tool includes both script ...

  8. Quarter-to-date - Wikipedia

    en.wikipedia.org/wiki/Quarter-To-Date

    Quarter-to-date (QTD) is a period starting at the beginning of the current quarter and ending at the current date.Quarter-to-date is used in many contexts, mainly for recording results of an activity in the time between a date (exclusive, since this day may not yet be “complete”) and the beginning of either the calendar or fiscal quarter.

  9. YTD - Wikipedia

    en.wikipedia.org/wiki/YTD

    YTD may refer to: Abbreviation of year-to-date; Thicket Portage Airport, Canada, IATA code This page was last edited on 11 ...