use test; drop table if exists t1, t2, t3; create table t1 (c1 int primary key, c2 int, c3 int, index c2 (c2)); load stats 's/explain_easy_stats_t1.json'; create table t2 (c1 int unique, c2 int); load stats 's/explain_easy_stats_t2.json'; create table t3 (a bigint, b bigint, c bigint, d bigint); load stats 's/explain_easy_stats_t3.json'; create table index_prune(a bigint(20) NOT NULL, b bigint(20) NOT NULL, c tinyint(4) NOT NULL, primary key(a, b), index idx_b_c_a(b, c, a)); load stats 's/explain_easy_stats_index_prune.json'; set @@session.tidb_opt_agg_push_down = 1; set @@session.tidb_opt_insubq_to_join_and_agg=1; set @@session.tidb_hashagg_partial_concurrency = 1; set @@session.tidb_hashagg_final_concurrency = 1; explain select * from t3 where exists (select s.a from t3 s having sum(s.a) = t3.a ); explain select * from t1; explain select * from t1 order by c2; explain select * from t2 order by c2; explain select * from t1 where t1.c1 > 0; explain select t1.c1, t1.c2 from t1 where t1.c2 = 1; explain select * from t1 left join t2 on t1.c2 = t2.c1 where t1.c1 > 1; explain update t1 set t1.c2 = 2 where t1.c1 = 1; explain delete from t1 where t1.c2 = 1; explain select count(b.c2) from t1 a, t2 b where a.c1 = b.c2 group by a.c1; explain select * from t2 order by t2.c2 limit 0, 1; explain select * from t1 where c1 > 1 and c2 = 1 and c3 < 1; explain select * from t1 where c1 = 1 and c2 > 1; # TODO: Add this test after support stream agg on TiKV. # explain select sum(t1.c1 in (select c1 from t2)) from t1; # id parents children task operator info count # TableScan_20 StreamAgg_13 cop table:t1, range:(-inf,+inf), keep order:false 8000 # StreamAgg_13 TableScan_20 cop , funcs:sum(in(test.t1.c1, 1, 2)) 1 # TableReader_22 StreamAgg_21 root data:StreamAgg_13 1 # StreamAgg_21 TableReader_22 root , funcs:sum(col_0) 1 explain select c1 from t1 where c1 in (select c2 from t2); # explain select (select count(1) k from t1 s where s.c1 = t1.c1 having k != 0) from t1; explain select * from information_schema.columns; explain select c2 = (select c2 from t2 where t1.c1 = t2.c1 order by c1 limit 1) from t1; explain select * from t1 order by c1 desc limit 1; set @@session.tidb_opt_insubq_to_join_and_agg=0; # explain select sum(t1.c1 in (select c1 from t2)) from t1; explain select 1 in (select c2 from t2) from t1; # explain select sum(6 in (select c2 from t2)) from t1; # explain format="dot" select sum(t1.c1 in (select c1 from t2)) from t1; explain format="dot" select 1 in (select c2 from t2) from t1; explain select * from index_prune WHERE a = 1010010404050976781 AND b = 26467085526790 LIMIT 1; explain select * from index_prune WHERE a = 1010010404050976781 AND b = 26467085526790 LIMIT 0; explain select * from index_prune WHERE a = 1010010404050976781 AND b = 26467085526790 LIMIT 1, 1; explain select * from index_prune WHERE a = 1010010404050976781 AND b = 26467085526790 LIMIT 1, 0; explain select * from index_prune WHERE a = 1010010404050976781 AND b = 26467085526790 LIMIT 0, 1; explain select * from index_prune WHERE a = 1010010404050976781 AND b = 26467085526790 ORDER BY a; explain select * from index_prune WHERE a = 1010010404050976781 AND b = 26467085526790 GROUP BY b; explain select * from index_prune WHERE a = 1010010404050976781 AND b = 26467085526790 GROUP BY b ORDER BY a limit 1; drop table if exists t1, t2, t3, index_prune; set @@session.tidb_opt_insubq_to_join_and_agg=1; drop table if exists tbl; create table tbl(column1 int, column2 int, index idx(column1, column2)); load stats 's/explain_easy_stats_tbl_dnf.json'; explain select * from tbl where (column1=0 and column2=1) or (column1=1 and column2=3) or (column1=2 and column2=5);