Sql queries for updating column values consolidating itunes library duplicates
Though an update statement can modify columns data from many sources, such as literal values or other query results, the basic format is the same.There are three components to an UPDATE statement: We’re now going to do some sample updates, so if you haven’t done so already, run the script to create the esql Sales Person table.
The previous example showed an inner join specified in the FROM clause of an UPDATE statement.
statement can be accomplished in one of two ways, primarily depending upon which version of SQL Server you are using.
We’ll briefly explore both options so you can find what works best for you.
Second, the SET clause specifies which column that you want to modify and the new values.
To update multiple columns, you use a list comma-separated assignments.