All The Columns

It doesn't happen to me frequently, but once in a while a tool returns a bunch of SQL that I need to investigate, yet when I look I can't recognize what database it's running against. When your tool doesn't give you a clue, you can use this handy SQL statement to return a list of all of the columns, in all of the databases on your entire instance:

DECLARE @SQL varchar(max)
SET @SQL=''

SELECT @SQL=@SQL+'UNION
select
'''+d.name+'.''+sh.name+''.''+o.name,c.name,c.column_id
from '+d.name+'.sys.columns  c
    inner join sys.objects  o on c.object_id=o.object_id
    INNER JOIN sys.schemas  sh on o.schema_id=sh.schema_id
'
FROM sys.databases d
SELECT @SQL=RIGHT(@SQL,LEN(@SQL)-5)+'order by 1,3'

EXEC (@SQL)

Pretty handy, eh?