Third, the WHERE clause specifies the rows that you want to update.Question: I want to update multiple rows in my table, and I need to understand how to update multiple columns.Every time I use this syntax, I get the idea that there is probably a better way. Hire Period FROM #Act Empl INNER JOIN (SELECT Employee ID, CASE WHEN MONTH(e. Employee ID IN (SELECT Employee ID FROM #Emp List) ) AE ON AE. If I were to write the same update query, I would probably opt to restate my IN part as a join and also move the sub-select out like this: update a set Hire Date FY = case when month(e. Can the way this statement is written speed the query up or should I look at table design?
You will be given questions that you need to solve.
After each exercise, we provide the solution so you can check your answer.
UPDATE summary_data SET current_category = (SELECT category_id FROM products WHERE products.product_id = summary_data.product_id) WHERE EXISTS (SELECT category_id FROM products WHERE products.product_id = summary_data.product_id); If you want to test your skills using the SQL UPDATE statement, try some of our practice exercises.
These exercises allow you to try out your skills with the UPDATE statement.
Hire Date) 1 END as Hire Date FY, CASE WHEN MONTH(e. Hire Date) - 1 END as Hire Period FROM Employee e WHERE e. The where clause including the limit on the Employee ID is definitely worthwhile, bacause there might be some records in the #Act Empl which are not present in #Emp List, so those will not be updated and it looks like this is what you want. How To Return Only 1 Entry Per Row When A Column Can Contain Multiples Point of update when using case in an Update statement How to write html code in sql server 2005?
Totals across a rows columns and potentialy multiple rows Update Else Insert Procedure Search for Characters in SQL server 2000 or 2005 Is it possible to simulate older versions of SQL Server without having them installed?
design problem in general terms but there are circumstances where bulk validation / data cleaning may be required.
I am currently engaged in so doing and in SQL Server 2012 you can now update more than 1 column per @John Woo answer below.
clause allows you to update data in one or more columns determined by a list of comma-separated assignments.