86
86
explain select distinct t1.a from t1,t3 where t1.a=t3.a;
88
88
select distinct t1.a from t1,t3 where t1.a=t3.a;
92
91
select distinct 1 from t1,t3 where t1.a=t3.a;
96
94
explain SELECT distinct t1.a from t1;
97
95
explain SELECT distinct t1.a from t1 order by a desc;