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SAP Sybase SQL Anywhere 16.0 » SQL Anywhere Server - SQL Usage » Queries and data modification » Data manipulation statements


Data changes using UPDATE

The UPDATE statement specifies the row or rows you want changed, and the expressions to be used as the new values for specific columns in those rows.

You can use the UPDATE statement to change single rows, groups of rows, or all the rows in a table. Unlike the other data manipulation statements (INSERT, MERGE, and DELETE), the UPDATE statement can also modify rows in more than one table at the same time. In all cases, the execution of the UPDATE statement is atomic; either all of the rows are modified without error, or none of them are. For example, if one of the values being modified is the wrong data type, or if the new value causes a CHECK constraint violation, the UPDATE fails and the entire operation is rolled back.

 UPDATE syntax
 SET clause
 WHERE clause
 Complex UPDATE statements
 UPDATE and constraint violations
 See also