Question

I have a SQL query like this (pseudo code)

Select ID, TEXT, 1, 2, 3, 4, 5, 6, 7 from blabla

but what I need is a query with 3 columns

Select ID, TEXT, STRING(1, 2, 3, 4, 5, 6, 7) from blabla

can I do this with just SQL?

EDIT:

Extra question:
It doesn’t work if 1-7 return NULL or nothing. How can i convert NULL to an empty string? (MySQL 2005)

Answer 1

In T-SQL / MS-SQL:

# With Space
SELECT ID, TEXT, 
  (1 + ' ' + 2 + ' ' + 3 + ' ' + 4 ' ' + 5 + ' ' + 6 + ' ' + 7) as Merged 
FROM blabla

# Without Space
SELECT ID, TEXT, 
  (1 + 2 + 3 + 4 + 5 + 6 + 7) as Merged 
FROM blabla

In My-SQL:

# With Space
SELECT ID, TEXT, 
  CONCAT_WS(' ', 1, 2, 3 , 4, 5, 6, 7) as Merged 
FROM blabla

# Without Space
SELECT ID, TEXT, 
  CONCAT(1, 2, 3 , 4, 5, 6, 7) as Merged 
FROM blabla

In PL-SQL/Oracle:

# With Space
SELECT ID, TEXT, 
  1 || ' ' || 2 || ' ' || 3 || ' ' || 4 || ' ' || 5 || ' ' || 6 || ' ' || 7 as Merged 
FROM blabla

# Without Space
SELECT ID, TEXT, 
  1 || 2 || 3 || 4 || 5 || 6 || 7 as Merged 
FROM blabla