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UPDATE changes the values of the specified columns in all rows that satisfy the condition. Only the columns to be modified need be mentioned in the SET clause; columns not explicitly modified retain their previous values.

UPDATE (SQL)

An SQL UPDATE statement changes the data of one or more records in a table. Either all the rows can be updated, or a subset may be chosen using a condition.

UPDATE (computing/software)

Piece of software that includes fixing security vulnerabilities and other bugs, and/or improving the usability or performance.