topic sql view is taking more time to copy into table or print in SAS Procedures

sql view is taking more time to copy into table or print

sunilreddy — Wed, 29 Aug 2012 18:50:42 GMT

when i am copying the records from view to table, its taking around 12 mins for 70K records, but when i am copying from view to view its taking less than a min

by using simple select statement.

I am using simple proc print statement for view and table. view is taking lot of more time than table.

is there any way to reduce the time to print with view

Re: sql view is taking more time to copy into table or print

ballardw — Wed, 29 Aug 2012 23:17:13 GMT

Trying to optimize code without an example of what the code is doing is extremely difficult. So an example of code would be helpful. Also are the views/ tables/ datasets SAS or accessing an external database?

In general a view has to excecute the equivalent of the code each time. If the source data is large or lots of complex code involved performance takes a hit. View to view is basically just constructing the instructions, not actually moving any data. The instructions execute when the view is used, such as in Proc print.

Re: sql view is taking more time to copy into table or print

Doc_Duke — Thu, 30 Aug 2012 13:27:20 GMT

Thus is working as intended. Copying a view to a view just copies the associated commands; no data are moved. That's why there is such a time difference. RTFM.