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# insert test insert into t1 values (100, 1.1, 'pune'); insert into t1 values (99, 1.2, 'mumbai'); insert into t1 values (98, 1.3, 'jaipur'); insert into t1 values (97, 1.4, 'delhi'); insert into t1 values (96, 1.5, 'ahmedabad'); select * from t1; select * from t1 where i = 98; select * from t1 where i < 100; # # add index using alter table table explain select * from t1 where f > 1.29999; alter table t1 add index sec_index(f); explain select * from t1 where f > 1.29999; select * from t1 where f > 1.29999; # explain select * from t1 where i = 100; alter table t1 add unique index pri_index(i); explain select * from t1 where i = 100; select * from t1 where i = 100; # # delete test delete from t1 where i < 97; select * from t1; insert into t1 values (96, 1.5, 'kolkata'); select * from t1; # # update test update t1 set f = 1.44 where c = 'delhi'; select * from t1; # # truncate table truncate table t1; insert into t1 values (100, 1.1, 'pune'); insert into t1 values (99, 1.2, 'mumbai'); insert into t1 values (98, 1.3, 'jaipur'); insert into t1 values (97, 1.4, 'delhi'); insert into t1 values (96, 1.5, 'ahmedabad'); select * from t1;