recompose this grid

testing results for: sql
lab01
GNU-Fed-i64
sql/test/wlcr29.253 
wlr20 X X1.432 
wlr30 X X0.976 
wlr40 X O0.636 
wlr50 X O0.632 
wlr70 X O4.765 
wlr100 X O5.553 
73667 (linear-hashing)