Pivoting SQL Data
So, the other day I was trying to pivot some SQL data that was basically in this format…
I wanted to see it like this …
It took me a while to figure out the syntax for this, but here it is. It uses the SQL pivot keyword.
This first portion dynamically creates the column names to be used in the pivot.
declare @cols varchar(max) select @cols = stuff ( ( select '], [' + FieldName from table group by FieldName order by min(ColNumber) for xml path('') ), 1, 2, '' ) + ']'
This next part creates a query within a string that we will run with the SQL exec command.
declare @query varchar(max) set @query = ' select RecNumber, ' + @cols + ' from ( select RecNumber, FieldName, FieldValue from table ) dta pivot ( min(FieldValue) for FieldName in (' + @cols + ') ) pvt '
All that is left to do is to execute the query that was created. I ended up putting this into a stored procedure.