Hi,
I was trying speeding up a query. After modifying it bigtime the query did not return any records. The query itself didn't make sense anymore, but I still expected it to return some data. After removing a dummy column, the expected resultset returned. After analysing the executionplan of both queries I noticed that the 'buggy' query was using a parallel statement... Is this a known issue?
The buggy query is:
The query working. Note that the column removed is identical to the other columns.
When the removed column is changed into a 'select top 1 1' the query works as expected.
Please,... can somebody explain what is going on here????
Stephan