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For instance, if a field is defined as CHAR(10) and you update the value ‘Kris’ into this column, then it will be padded with six spaces.
The value is changed to ‘Kris ‘You can handle errors when executing an UPDATE statement using a TRY…CATCH construct.
In this example, we’re going to show you how to update’s column values based on a match to another table.
The general form to use is: contains the update values; we use joins to do the matching.
This “all or nothing” behavior can be modified for arithmetic errors. An exclusive (X) lock is always placed on a table when an update is run.
Recall the INNER JOIN clause is used to match the rows from one table to another using a join condition. The complete script to run to log the output into a temporary table is: This statement defines a table with three columns and names the table variable @Update Log.
The reason we’re using a table variable is temporary and will be removed once query session is closed.
This is possible since the sales person’s full name is common to both tables. The OUTPUT clause is used to log changes made to rows affect by an UPDATE statement.
In the diagram below you’ll see where there is a match between these two tables: By matching esql Sales Person. Notice here we’re constructing a full name from the views First Name and Last Name columns. So, once we have the join, the last bit of business to it do the update. Suppose the Sales Last Year figures were found to be incorrect and needed to be adjusted by five percent.