USE tpch1;
set autocommit=0;
update lineitem a join region b on b.r_regionkey = a.l_orderkey set b.r_regionkey=2;
select * from region;
r_regionkey	r_name	r_comment
0	AFRICA	lar deposits. blithely final packages cajole. regular waters are final requests. regular accounts are according to 
2	AMERICA	hs use ironic, even requests. s
2	ASIA	ges. thinly even pinto beans ca
2	EUROPE	ly final courts cajole furiously final excuse
2	MIDDLE EAST	uickly special accounts cajole carefully blithely close requests. carefully final asymptotes haggle furiousl
rollback;
select * from region;
r_regionkey	r_name	r_comment
0	AFRICA	lar deposits. blithely final packages cajole. regular waters are final requests. regular accounts are according to 
1	AMERICA	hs use ironic, even requests. s
2	ASIA	ges. thinly even pinto beans ca
3	EUROPE	ly final courts cajole furiously final excuse
4	MIDDLE EAST	uickly special accounts cajole carefully blithely close requests. carefully final asymptotes haggle furiousl
update region b join lineitem a on b.r_regionkey = a.l_orderkey set b.r_regionkey=2;
select * from region;
r_regionkey	r_name	r_comment
0	AFRICA	lar deposits. blithely final packages cajole. regular waters are final requests. regular accounts are according to 
2	AMERICA	hs use ironic, even requests. s
2	ASIA	ges. thinly even pinto beans ca
2	EUROPE	ly final courts cajole furiously final excuse
2	MIDDLE EAST	uickly special accounts cajole carefully blithely close requests. carefully final asymptotes haggle furiousl
rollback;
select * from region;
r_regionkey	r_name	r_comment
0	AFRICA	lar deposits. blithely final packages cajole. regular waters are final requests. regular accounts are according to 
1	AMERICA	hs use ironic, even requests. s
2	ASIA	ges. thinly even pinto beans ca
3	EUROPE	ly final courts cajole furiously final excuse
4	MIDDLE EAST	uickly special accounts cajole carefully blithely close requests. carefully final asymptotes haggle furiousl