# Establish connection conn1 (user = root) SET STORAGE_ENGINE = 'tokudb'; DROP TABLE IF EXISTS foo; set session transaction isolation level read committed; create table foo ( a int, b int, primary key (a)); insert into foo values (1,1),(2,2),(3,1),(4,3); select * from foo; a b 1 1 2 2 3 1 4 3 begin; update foo set b=10 where b=1; select * from foo; a b 1 10 2 2 3 10 4 3 set session transaction isolation level read committed; select * from foo; a b 1 1 2 2 3 1 4 3 set session transaction isolation level read uncommitted; select * from foo; a b 1 10 2 2 3 10 4 3 rollback; begin; insert into foo values (5,1),(6,2),(7,1),(8,3); select * from foo; a b 1 1 2 2 3 1 4 3 5 1 6 2 7 1 8 3 set session transaction isolation level read committed; select * from foo; a b 1 1 2 2 3 1 4 3 set session transaction isolation level read uncommitted; select * from foo; a b 1 1 2 2 3 1 4 3 5 1 6 2 7 1 8 3 commit; begin; delete from foo where b=1; select * from foo; a b 2 2 4 3 6 2 8 3 set session transaction isolation level read committed; select * from foo; a b 1 1 2 2 3 1 4 3 5 1 6 2 7 1 8 3 set session transaction isolation level read uncommitted; select * from foo; a b 2 2 4 3 6 2 8 3 commit; set session transaction isolation level serializable; DROP TABLE foo;