Question

I currently have my data stored in this format :

Word1 - Word2 - Number.I.Need.To.Extract.Separated.By.Periods - Word3 - Word4

What I would like to do is write an update statement that will set a column which I have just created to Number.I.Need.To.Extract.Separated.By.Periods.

What is my best way to do this, or work like this?

I have tried to write it as follows :

UPDATE Table1
SET NewColumn = 
               (SELECT SUBSTRING(Column, 19, 14)
                FROM Table1)

Which results in :

Subquery returned more than 1 value. This is not permitted when the
subquery follows =, !=, <, <= , >, >= or when the subquery is used as
an expression. The statement has been terminated.

How can I fix this ?

Answer 1

You don’t need the subquery as the update occurs “inside” the same row.

Doesn’t this work?

UPDATE Table1 SET NewColumn = SUBSTRING(Column, 19, 14)