Question : concatenating multiple rows into a single row in a sybase table

Can someone please help me out in writing the Sql to concatenate the Text_desc
for each code for all the seq_nos in the ascending order of seq_no and load into the target table. I want to implement this in Sybase 12.5.

Source table : S1 (2700 records in S1 table)

Code Seq_no Text_desc
----- ------------ -------------------------
1579 0 BCN5, CO20, ER75
1579 1 FP5, WC6, MATW, OPRH
1579 2 T
1600 0 TW, FP5, AS5, MHSA15, DME20
1600 1 ER100, UR40

Target table: T1

Text_desc (concatenate all the strings for each code in ascending order of seq_no)

code Text_desc
----- ---------
1579 BCN5, CO20, ER75FP5, WC6, MATW, OPRHT
1600 TW, FP5, AS5, MHSA15, DME20ER100, UR40

thanks,
maddy

Answer : concatenating multiple rows into a single row in a sybase table

Try this version. I re-keyed the CASE statements to run off of the SEQ_NO assuming you will always have a '0' sequence number.

Regards,
Bill

                       
         
           
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             CREATE PROC test_concat
AS
BEGIN
  DECLARE @LastCode char(4),
          @LastDesc VARCHAR(512)
 
  SELECT PDBC_PFX, BSTX_SEQ_NO,CONVERT(VARCHAR(512),BSTX_TEXT) BSTX_TEXT
    INTO #CMC_BSTX_SUM_TEXT
    FROM CMC_BSTX_SUM_TEXT where  PDBC_PFX IN ('0157','0158','1579')
   ORDER BY PDBC_PFX, BSTX_SEQ_NO
 
  SET @LastCode = '',
      @LastDesc = ''
 
  UPDATE #CMC_BSTX_SUM_TEXT
     SET @LastDesc = CASE WHEN BSTX_SEQ_NO = 0
                          THEN BSTX_TEXT
                          ELSE @LastDesc + BSTX_TEXT END,
         BSTX_TEXT = CASE WHEN BSTX_SEQ_NO = 0
                          THEN BSTX_TEXT
                          ELSE @LastDesc + BSTX_TEXT END
         
--SELECT PDBC_PFX, MAX(BSTX_TEXT)
  --  FROM #CMC_BSTX_SUM_TEXT  GROUP BY PDBC_PFX
 
 Select * from #CMC_BSTX_SUM_TEXT  order by PDBC_PFX,BSTX_SEQ_NO
END

           
         

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