Question

change all the [Titles] of a sql table without any condition

I used a loop but don’t know how to affect all the rows within the Update statement

it should be easy one

something like :

WHILE @counter < 89 
BEGIN

    Update Products 
        SET Title = ('Product ' + @counter) 
        Where Title LIKE ''
    SET @counter = @counter + 1 ;
END 

SELECT Title FROM Products

Answer 1

Update Products 
    SET Title = ('Product ' + cast(@counter as varchar)) ;

This updates all the rows with the same value

BUT

if you need an autonumerated different values, try this:

Update Products SET 
  Title = ('Product ' + cast(@counter as varchar)), 
  @counter = @counter+1 ;

It definitely work, try this

CREATE table t (a VARCHAR(100))

INSERT t VALUES('a')
INSERT t VALUES('a')
INSERT t VALUES('a')
INSERT t VALUES('a')


DECLARE @counter INT = 0

UPDATE t SET a = 'aaa'+CAST(@counter AS VARCHAR), @counter = @counter+1

SELECT * FROM t

The output is

a
----
aaa1
aaa2
aaa3
aaa4