Mysql updating

Mysql updating

Updating multiple columns The following example updates the values in the Bonus, CommissionPct, and SalesQuota columns for all rows in the SalesPerson table. These results can be returned to the processing application for use in such things as confirmation messages, archiving, and other such application requirements. The following example doubles the value in the ListPrice column for all rows in the Product table.

The following example showsOnly the rows returned by theIf more than

Three methods are demonstrated. We do not recommend this method for streaming large amounts of data to a file. Note that you must specify a valid server name for datasrc.

This data is then replaced with the correct data by using the. The linked server name created in the previous example is used in this example. Updating data in a remote table by using a linked server The following example updates a table on a remote server.

Specifying a table alias as the target object The follow example updates rows in the table Production. The value is used only during query optimization, and not during query execution.

Only the rows returned by the common table expression are modified. The following example shows how to update a value in a column of user-defined type Point, by explicitly converting from a string. If more than one sale for a specified salesperson can be recorded on the same day, the example shown does not work correctly. Specifying a table variable as the target object The following example updates rows in a table variable.

The subquery must return only a scalar value that is, a single value per row. The linked server name, MyLinkServer, is then specified as part of the four-part object name in the form server.

The RowCount output parameter is used to return the number of rows affected to a local variable. The expression supplying the value must be implicitly convertible to the type of the property. For more information, see ad hoc distributed queries Server Configuration Option.