I am seeing significant performance issues with release 12 loads and the use of if conditions in the script.
If i load a sample table:
Load field1,
field2,
if(field2 = 'x',1) as Xflag,
if(fileld2=''y'',1) as Yflag,
if(field2='z',1) as Zflag
from file.qvd (qvd);
Performance is terrible and seems to relate the the number of if condition against the same source field.
This will virturally peg the cpu of a multiprocessor muti core server and loading 250k rows as an example with take minutes.
If i modify above to
load *,
if(field2='x',1) as XFlag,
if(field2='y'',1) as YFlag,
if(field2='z',1) as ZFlag;
Load field1,
field2
from file.qvd(qvd);
Performance is as expected. No drain on cpu and loads in seconds.
Has anyone else seen this behavior. Seems like a very significant bug.
