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There is also an IGNORE clause for the INSERT statement, [7] which tells the server to ignore "duplicate key" errors and go on (existing rows will not be inserted or updated, but all new rows will be inserted). SQLite's INSERT OR REPLACE INTO works similarly. It also supports REPLACE INTO as an alias for compatibility with MySQL. [8]
In SQL, the TRUNCATE TABLE statement is a data manipulation language (DML) [1] operation that deletes all rows of a table without causing a triggered action. The result of this operation quickly removes all data from a table , typically bypassing a number of integrity enforcing mechanisms.
In computing, data deduplication is a technique for eliminating duplicate copies of repeating data. Successful implementation of the technique can improve storage utilization, which may in turn lower capital expenditure by reducing the overall amount of storage media required to meet storage capacity needs.
Deleting all rows from a table can be very time-consuming. Some DBMS [clarification needed] offer a TRUNCATE TABLE command that works a lot quicker, as it only alters metadata and typically does not spend time enforcing constraints or firing triggers. DELETE only deletes the rows. For deleting a table entirely the DROP command can be used.
Menu commands to show, hide and delete all comments; Priority of conditional formatting rules can be changed with new up/down buttons; Extra sheet protection options have been added, to optionally allow insertion or deletion of rows and columns; CSV export settings are now remembered; Impress & Draw
The more fine-grained the available locks, the less likely one process/thread will request a lock held by the other. (For example, locking a row rather than the entire table, or locking a cell rather than the entire row); deadlock: the situation when each of at least two tasks is waiting for a lock that the other task holds. Unless something is ...
The TSM database (through release 5.5) was a bespoke B+ tree database; although the TSM database used many of the same underlying technologies as IBM's Db2, has a SQL engine (for read-only use), and supports access through ODBC, the database had an architectural limit of approximately 530 GB, and 13 GB of log space. Starting with TSM 6.1 ...
MongoDB has been removed from the Debian, Fedora and Red Hat Enterprise Linux distributions because of the licensing change. Fedora determined that the SSPL version 1 is not a free software license because it is "intentionally crafted to be aggressively discriminatory" towards commercial users.