1. UNLOGGED tables				Operating System: Suse-Linux 10.2 x86_64
	2. 10GB shared buffers				Hardware : 4 core (Intel(R) Xeon(R) CPU L5408 @ 2.13GHz)
	3. Number of tuples - 2,000,000				RAM : 24GB
	4. Single connection
	5. All columns INT data type
	ALL cols has data				Last columns has NULLS
	64 cols	300 cols	800 cols		800 cols - 600 nulls		800 cols - 300 nulls		300 cols - 150 nulls		300 cols - 250 nulls
	Execution time(ms)	Execution time(ms)	Execution time(ms)		Execution time(ms)	space (pages)	Execution time(ms)	space (pages)	Execution time(ms)	space (pages)	Execution time(ms)	space (pages)
	3780.463	12537.545	110927.318		9659.534	250000	70964.223	666667	7139.723	166667	3633.513	66667
	3763.355	12395.152	117314.811		9660.523	250000	71137.35	666667	7181.817	166667	3690.42	66667
	3861.599	12383.04	116850.063		9624.601	250000	71493.857	666667	7164.65	166667	3663.35	66667
	3782.834	12384.603	114851.073		9708.767	250000	71358.109	666667	7027.79	166667	3680.935	66667
	3784.745	12542.94	115328.117		9709.173	250000	71560.704	666667	7008.517	166667	3690.72	66667
	3794.5992	12448.656	115054.2764		9672.5196	250000	71302.8486	666667	7104.499	166667	3671.788	66667
	3797.515	12243.555	114084.584		8728.914	222223	69659.69	666667	6942.56	166667	3388.882	58824
	3783.741	12317.067	113870.478		8706.79	222223	69646.359	666667	6908.025	166667	3336.522	58824
	3805.318	12232.241	112064.184		8589.396	222223	69853.287	666667	6841.875	166667	3359.254	58824
	3770.726	12265.632	112872.178		8729.362	222223	69277.953	666667	6891.575	166667	3267.011	58824
	3796.17	12303.039	114184.811		8685.041	222223	69728.952	666667	6914.374	166667	3325.61	58824
	3790.694	12272.3068	113415.247		8687.9006	222223	69633.2482	666667	6899.682	166667	3335.456	58824
	0.10%	1.42%	1.42%		10.18%	11.11%	2.34%	0.00%	2.88%	0.00%	9.16%	11.76%