Search results
Results from the WOW.Com Content Network
Excel at using Excel with these keyboard hotkeys that will save you minutes of time—and hours of aggravation. The post 80 of the Most Useful Excel Shortcuts appeared first on Reader's Digest.
To process this statement without an index the database software must look at the last_name column on every row in the table (this is known as a full table scan). With an index the database simply follows the index data structure (typically a B-tree) until the Smith entry has been found; this is much less computationally expensive than a full ...
The cost is predictable, as every time database system needs to scan full table row by row. When table is less than 2 percent of database block buffer, the full scan table is quicker. Cons: Full table scan occurs when there is no index or index is not being used by SQL. And the result of full scan table is usually slower that index table scan.
[1] [2] [3] Spreadsheets were developed as computerized analogs of paper accounting worksheets. [4] The program operates on data entered in cells of a table. Each cell may contain either numeric or text data, or the results of formulas that automatically calculate and display a value based on the contents of other cells.
A point q is reachable from p if there is a path p 1, ..., p n with p 1 = p and p n = q, where each p i+1 is directly reachable from p i. Note that this implies that the initial point and all points on the path must be core points, with the possible exception of q. All points not reachable from any other point are outliers or noise points.
The post 96 Shortcuts for Accents and Symbols: A Cheat Sheet appeared first on Reader's Digest. These printable keyboard shortcut symbols will make your life so much easier.
New details about a study that warned against black plastic spatulas and other kitchen tools have come out. (Getty Creative) (Анатолий Тушенцов via Getty Images)
These few keyboard shortcuts allow the user to perform all the basic editing operations, and the keys are clustered at the left end of the bottom row of the standard QWERTY keyboard. These are the standard shortcuts: Control-Z (or ⌘ Command+Z) to undo; Control-X (or ⌘ Command+X) to cut; Control-C (or ⌘ Command+C) to copy