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Excel maintains 15 figures in its numbers, but they are not always accurate; mathematically, the bottom line should be the same as the top line, in 'fp-math' the step '1 + 1/9000' leads to a rounding up as the first bit of the 14 bit tail '10111000110010' of the mantissa falling off the table when adding 1 is a '1', this up-rounding is not undone when subtracting the 1 again, since there is no ...
SQL refers to Structured Query Language, a kind of language used to access, update and manipulate database. In SQL, ROLLBACK is a command that causes all data changes since the last START TRANSACTION or BEGIN to be discarded by the relational database management systems (RDBMS), so that the state of the data is "rolled back" to the way it was before those changes were made.
The caretaker is going to do something to the originator, but wants to be able to undo the change. The caretaker first asks the originator for a memento object. Then it does whatever operation (or sequence of operations) it was going to do. To roll back to the state before the operations, it returns the memento object to the originator.
To see the changes the rollback button will revert, view the specific diff that compares the last version from the last editor with the last version from the previous editor. The rollback link looks similar to this: [rollback: # edits] Rollback works much more quickly than undo, since it:
Issuing the commands ROLLBACK or COMMIT will also discard any savepoints created since the start of the main transaction. Savepoints are defined in the SQL standard and are supported by all established SQL relational databases, including PostgreSQL , Oracle Database , Microsoft SQL Server , MySQL , IBM Db2 , SQLite (since 3.6.8), Firebird , H2 ...
Use of a user-defined function sq(x) in Microsoft Excel. The named variables x & y are identified in the Name Manager. The function sq is introduced using the Visual Basic editor supplied with Excel. Subroutine in Excel calculates the square of named column variable x read from the spreadsheet, and writes it into the named column variable y.
Formula Autocomplete, automatically suggests function names, arguments and named ranges, and automatically completing them if desired, based on the characters entered. Formulae can refer to a table as well; CUBE functions which allow importing data, including set aggregated data, from data analysis services, such as SQL Server Analysis Services
This will immediately roll back the page to the version prior to your edits and post an edit summary such as, "Reverted edits by User2 (talk) to last version by User1) (rollback: 3 edits | undo)". To see the difference between rollback and the undo tool , go back to the page history and click "undo" instead of rollback.