Question

I have a question about inserting row order number by spesific order type.

Products table has OrderNumber field. I want to programaticly add new line to appropriate OrderNumber by its name. If the reference column would be integer it has to be easy like that

update products set OrderNumber=OrderNumber+1 where Price>555

Is there similar way for varchar field like

update products set OrderNumber=OrderNumber+1 where Name>'bla%'

Thank you

Answer 1

You can use STRCMP(‘text’, ‘text2’)

update products 
set OrderNumber=OrderNumber+1 
where STRCMP(Name, 'bla') = 1;

I missunderstood your point. Can you try something like this?

SET @rownum:=0;
update 
set OrderNumber=@rownum:=@rownum + 1
from products
order by Name;