1INSERT INTO init_file.startup VALUES ( NOW() ); 2SELECT * INTO @X FROM init_file.startup limit 0,1; 3SELECT * INTO @Y FROM init_file.startup limit 1,1; 4SELECT YEAR(@X)-YEAR(@Y); 5YEAR(@X)-YEAR(@Y) 60 7ok 8end of 4.1 tests 9select * from t1; 10x 113 125 137 1411 1513 16select * from t2; 17y 1830 193 2011 2113 22