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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.
Saving a ddl file in Oracle SQL Developer. In the context of SQL, data definition or data description language (DDL) is a syntax for creating and modifying database objects such as tables, indices, and users. DDL statements are similar to a computer programming language for defining data structures, especially database schemas.
The Data Definition Language (DDL) manages table and index structure. The most basic items of DDL are the CREATE, ALTER, RENAME, DROP and TRUNCATE statements: CREATE creates an object (a table, for example) in the database, e.g.:
At a minimum, the SHOW statement should also be discussed. (2) Due in large part to a lack of standardization of DDL, most DMLs provide a DML interface that can be used as a DDL. A table showing correspondences between DDL and equivalent DML would be very useful. Vrmlguy 12:07, 7 January 2013 (UTC)
As cases of the HMPV virus continue to increase in the U.S. and in China, here's what you need to know about the virus.
An aerial view of the Kayenta Solar Plant in Kayenta, Arizona, part of a project backed by the Department of Energy to bring clean power to communities off the main electrical grid.
Jackie Kennedy (1961) There’s a reason Jackie Kennedy is considered a style icon to this day. For her husband’s inauguration in 1961, Jackie O sported a beige topcoat from Oleg Cassini that ...
the TRUNCATE TABLE statement, comma-separated WHEN clauses in a CASE expression, INSTEAD OF database triggers, partitioned JOIN tables, support for various XQuery regular expression/pattern-matching features, and; enhancements to derived column names. [1]