SQL update syntax and instances

SQL update syntax and instances

The daily use of the database tutorial is a constantly changing data store. In SQL is used to modify data that has been updated and deleted in the database commands.the UPDATE statement can update one or more record commands in the table.

UPDATE table_name

SET column_name = Expression

WHERE conditions

Instance One

UPDATE antiqueowners

SET address = ', Lincoln St. '

WHERE ownerfirstname= ' Jane ' and ownerlastname = ' Akins '

The UPDATE statement can be used in the updated table. This declares that a field will update the Antiqueowners table Jane Akins address 77, Lincoln St..

Note: The update does not generate a result set. If you want to know which records will be modified, run the Select query first, and it uses the same criteria. If the results are satisfactory, then run an update query.

Example Two

UPDATE antiqueowners

SET address = ', Lincoln St. ', city = ' Kirkland ', state = ' Washington '

WHERE ownerfirstname= ' Jane ' and ownerlastname= ' Akins '