In this query, t2 is very large, and has no index:
select * from t1, t2 where c11 > 0 and c12 = c21 and c22 = 0
The abstract plan that specifies the reformatting strategy on t2 is:
( g_join (t_scan t1 (scan (store Worktab1 (t_scan t2) ) ) )
In the case of the reformatting strategy, the store operator is an operand of scan. This is the only case when the store operator is not the operand of a plan operator.