MS Access 2007: Using SQL to Transpose rows to columns - sql

Question

SQL newbie here. I have table setup as the following (my apologies for the poor formatting):
Cycle ID....UBCI....chemo_cycle....csf....rsn_no_csf
57.............18001...1......................N.......N 58.............18001...2......................N.......N59.............22002...1......................Y........null
I'd like to convert it into the following format:
UBCI....chemo_cycle1....chemo_cycle2....csf1....csf2....rsn_no_csf1....rsn_no_csf2 18001...1.........................2.........................N........N........N.....................N22002...1.........................null......................Y........null.....null..................null
There can be up to 26 chemo_cycles per UBCI. I tried some of the other suggestions, but wasn't familiar enough with SQL to work out some of the finer details. Again, apologies for the formatting. Any help would be appreciated.
Thank you!
-Omar

Answer 1

The only way I can see to do this conveniently in Access is with four queries. I do not think you can use crosstab queries as subqueries, so:
Query 1: cc
TRANSFORM First(TableQ.chemo_cycle) AS FirstOfchemo_cycle
SELECT TableQ.UBCI
FROM TableQ
GROUP BY TableQ.UBCI
PIVOT "CC " & [chemo_cycle];
Query 2: csf
TRANSFORM First(TableQ.csf) AS FirstOfcsf
SELECT TableQ.UBCI
FROM TableQ
GROUP BY TableQ.UBCI
PIVOT "csf " & [chemo_cycle];
Query 3: rsn
TRANSFORM First(TableQ.rsn_no_csf) AS FirstOfrsn_no_csf
SELECT TableQ.UBCI
FROM TableQ
GROUP BY TableQ.UBCI
PIVOT "rsn " & [chemo_cycle];
Final query:
The columns [cc 1] to [cc 26] will show in the design window, and can be added, here they are indicated by <...>
SELECT CC.UBCI,
CC.[CC 1],
CC.[CC 2],
<...>
csf.[csf 1],
csf.[csf 2],
<...>
rsn.[rsn 1],
rsn.[rsn 2]
<...>
FROM (CC INNER JOIN csf
ON CC.UBCI = csf.UBCI)
INNER JOIN rsn
ON csf.UBCI = rsn.UBCI;