set tidb_cost_model_version=1; use test; drop table if exists t1, t2; create table t1 (c1 int primary key, c2 int, index c2 (c2)); create table t2 (c1 int unique, c2 int); insert into t1 values(1, 0), (2, 1); insert into t2 values(1, 0), (2, 1); # simple cte explain with cte(a) as (select 1) select * from cte; explain with cte(a) as (select c1 from t1) select * from cte; explain with cte(a,b,c,d) as (select * from t1, t2) select * from cte; # recursive cte explain with recursive cte(a) as (select 1 union select a+1 from cte where a < 10) select * from cte; explain with recursive cte(a) as (select c2 from t1 union select a+1 from cte where a < 10) select * from cte; # nested cte explain with cte(a) as (with recursive cte1(a) as (select 1 union select a + 1 from cte1 where a < 10) select * from cte1) select * from cte; # cte with join explain with recursive cte(a) as (select 1 union select a+1 from cte where a < 10) select * from cte t1, cte t2; explain with cte(a) as (with recursive cte1(a) as (select 1 union select a + 1 from cte1 where a < 10) select * from cte1) select * from cte t1, cte t2; # multiple cte explain with recursive cte1(a) as (select 1 union select a+1 from cte1 where a < 10), cte2(a) as (select c2 from t1 union select a+1 from cte2 where a < 10) select * from cte1, cte2; # other explain with q(a,b) as (select * from t1) select /*+ merge(q) no_merge(q1) */ * from q, q q1 where q.a=1 and q1.a=2; # explain with cte(a,b) as (select * from t1) select (select 1 from cte limit 1) from cte; explain with recursive cte(a,b) as (select 1, concat('a', 1) union select a+1, concat(b, 1) from cte where a < 5) select * from cte; explain select * from t1 dt where exists(with recursive qn as (select c1*0+1 as b union all select b+1 from qn where b=0) select * from qn where b=1); # recursive limit explain with recursive cte1(c1) as (select c1 from t1 union select c1 + 1 c1 from cte1 limit 1) select * from cte1; explain with recursive cte1(c1) as (select c1 from t1 union select c1 + 1 c1 from cte1 limit 100 offset 100) select * from cte1; explain with recursive cte1(c1) as (select c1 from t1 union select c1 + 1 c1 from cte1 limit 0 offset 0) select * from cte1; explain with recursive cte1(c1) as (select c1 from t1 union select c1 + 1 c1 from cte1 limit 1) select * from cte1 dt1 join cte1 dt2 on dt1.c1 = dt2.c1; explain with recursive cte1(c1) as (select c1 from t1 union select c1 + 1 c1 from cte1 limit 0 offset 0) select * from cte1 dt1 join cte1 dt2 on dt1.c1 = dt2.c1; # non-recursive limit explain with recursive cte1(c1) as (select c1 from t1 union select c1 from t2 limit 1) select * from cte1; explain with recursive cte1(c1) as (select c1 from t1 union select c1 from t2 limit 100 offset 100) select * from cte1; explain with recursive cte1(c1) as (select c1 from t1 union select c1 from t2 limit 0 offset 0) select * from cte1; # TPC-DS Q11 CREATE TABLE `customer` ( `c_customer_sk` int(11) NOT NULL, `c_customer_id` char(16) NOT NULL, `c_current_cdemo_sk` int(11) DEFAULT NULL, `c_current_hdemo_sk` int(11) DEFAULT NULL, `c_current_addr_sk` int(11) DEFAULT NULL, `c_first_shipto_date_sk` int(11) DEFAULT NULL, `c_first_sales_date_sk` int(11) DEFAULT NULL, `c_salutation` char(10) DEFAULT NULL, `c_first_name` char(20) DEFAULT NULL, `c_last_name` char(30) DEFAULT NULL, `c_preferred_cust_flag` char(1) DEFAULT NULL, `c_birth_day` int(11) DEFAULT NULL, `c_birth_month` int(11) DEFAULT NULL, `c_birth_year` int(11) DEFAULT NULL, `c_birth_country` varchar(20) DEFAULT NULL, `c_login` char(13) DEFAULT NULL, `c_email_address` char(50) DEFAULT NULL, `c_last_review_date_sk` int(11) DEFAULT NULL, PRIMARY KEY (`c_customer_sk`) /*T![clustered_index] NONCLUSTERED */ ); CREATE TABLE `store_sales` ( `ss_sold_date_sk` int(11) DEFAULT NULL, `ss_sold_time_sk` int(11) DEFAULT NULL, `ss_item_sk` int(11) NOT NULL, `ss_customer_sk` int(11) DEFAULT NULL, `ss_cdemo_sk` int(11) DEFAULT NULL, `ss_hdemo_sk` int(11) DEFAULT NULL, `ss_addr_sk` int(11) DEFAULT NULL, `ss_store_sk` int(11) DEFAULT NULL, `ss_promo_sk` int(11) DEFAULT NULL, `ss_ticket_number` int(11) NOT NULL, `ss_quantity` int(11) DEFAULT NULL, `ss_wholesale_cost` decimal(7,2) DEFAULT NULL, `ss_list_price` decimal(7,2) DEFAULT NULL, `ss_sales_price` decimal(7,2) DEFAULT NULL, `ss_ext_discount_amt` decimal(7,2) DEFAULT NULL, `ss_ext_sales_price` decimal(7,2) DEFAULT NULL, `ss_ext_wholesale_cost` decimal(7,2) DEFAULT NULL, `ss_ext_list_price` decimal(7,2) DEFAULT NULL, `ss_ext_tax` decimal(7,2) DEFAULT NULL, `ss_coupon_amt` decimal(7,2) DEFAULT NULL, `ss_net_paid` decimal(7,2) DEFAULT NULL, `ss_net_paid_inc_tax` decimal(7,2) DEFAULT NULL, `ss_net_profit` decimal(7,2) DEFAULT NULL, PRIMARY KEY (`ss_item_sk`,`ss_ticket_number`) /*T![clustered_index] NONCLUSTERED */ ); CREATE TABLE `date_dim` ( `d_date_sk` int(11) NOT NULL, `d_date_id` char(16) NOT NULL, `d_date` date DEFAULT NULL, `d_month_seq` int(11) DEFAULT NULL, `d_week_seq` int(11) DEFAULT NULL, `d_quarter_seq` int(11) DEFAULT NULL, `d_year` int(11) DEFAULT NULL, `d_dow` int(11) DEFAULT NULL, `d_moy` int(11) DEFAULT NULL, `d_dom` int(11) DEFAULT NULL, `d_qoy` int(11) DEFAULT NULL, `d_fy_year` int(11) DEFAULT NULL, `d_fy_quarter_seq` int(11) DEFAULT NULL, `d_fy_week_seq` int(11) DEFAULT NULL, `d_day_name` char(9) DEFAULT NULL, `d_quarter_name` char(6) DEFAULT NULL, `d_holiday` char(1) DEFAULT NULL, `d_weekend` char(1) DEFAULT NULL, `d_following_holiday` char(1) DEFAULT NULL, `d_first_dom` int(11) DEFAULT NULL, `d_last_dom` int(11) DEFAULT NULL, `d_same_day_ly` int(11) DEFAULT NULL, `d_same_day_lq` int(11) DEFAULT NULL, `d_current_day` char(1) DEFAULT NULL, `d_current_week` char(1) DEFAULT NULL, `d_current_month` char(1) DEFAULT NULL, `d_current_quarter` char(1) DEFAULT NULL, `d_current_year` char(1) DEFAULT NULL, PRIMARY KEY (`d_date_sk`) /*T![clustered_index] NONCLUSTERED */ ); CREATE TABLE `web_sales` ( `ws_sold_date_sk` int(11) DEFAULT NULL, `ws_sold_time_sk` int(11) DEFAULT NULL, `ws_ship_date_sk` int(11) DEFAULT NULL, `ws_item_sk` int(11) NOT NULL, `ws_bill_customer_sk` int(11) DEFAULT NULL, `ws_bill_cdemo_sk` int(11) DEFAULT NULL, `ws_bill_hdemo_sk` int(11) DEFAULT NULL, `ws_bill_addr_sk` int(11) DEFAULT NULL, `ws_ship_customer_sk` int(11) DEFAULT NULL, `ws_ship_cdemo_sk` int(11) DEFAULT NULL, `ws_ship_hdemo_sk` int(11) DEFAULT NULL, `ws_ship_addr_sk` int(11) DEFAULT NULL, `ws_web_page_sk` int(11) DEFAULT NULL, `ws_web_site_sk` int(11) DEFAULT NULL, `ws_ship_mode_sk` int(11) DEFAULT NULL, `ws_warehouse_sk` int(11) DEFAULT NULL, `ws_promo_sk` int(11) DEFAULT NULL, `ws_order_number` int(11) NOT NULL, `ws_quantity` int(11) DEFAULT NULL, `ws_wholesale_cost` decimal(7,2) DEFAULT NULL, `ws_list_price` decimal(7,2) DEFAULT NULL, `ws_sales_price` decimal(7,2) DEFAULT NULL, `ws_ext_discount_amt` decimal(7,2) DEFAULT NULL, `ws_ext_sales_price` decimal(7,2) DEFAULT NULL, `ws_ext_wholesale_cost` decimal(7,2) DEFAULT NULL, `ws_ext_list_price` decimal(7,2) DEFAULT NULL, `ws_ext_tax` decimal(7,2) DEFAULT NULL, `ws_coupon_amt` decimal(7,2) DEFAULT NULL, `ws_ext_ship_cost` decimal(7,2) DEFAULT NULL, `ws_net_paid` decimal(7,2) DEFAULT NULL, `ws_net_paid_inc_tax` decimal(7,2) DEFAULT NULL, `ws_net_paid_inc_ship` decimal(7,2) DEFAULT NULL, `ws_net_paid_inc_ship_tax` decimal(7,2) DEFAULT NULL, `ws_net_profit` decimal(7,2) DEFAULT NULL, PRIMARY KEY (`ws_item_sk`,`ws_order_number`) /*T![clustered_index] NONCLUSTERED */ ); desc format='brief' with year_total as ( select c_customer_id customer_id ,c_first_name customer_first_name ,c_last_name customer_last_name ,c_preferred_cust_flag customer_preferred_cust_flag ,c_birth_country customer_birth_country ,c_login customer_login ,c_email_address customer_email_address ,d_year dyear ,sum(ss_ext_list_price-ss_ext_discount_amt) year_total ,'s' sale_type from customer ,store_sales ,date_dim where c_customer_sk = ss_customer_sk and ss_sold_date_sk = d_date_sk group by c_customer_id ,c_first_name ,c_last_name ,c_preferred_cust_flag ,c_birth_country ,c_login ,c_email_address ,d_year union all select c_customer_id customer_id ,c_first_name customer_first_name ,c_last_name customer_last_name ,c_preferred_cust_flag customer_preferred_cust_flag ,c_birth_country customer_birth_country ,c_login customer_login ,c_email_address customer_email_address ,d_year dyear ,sum(ws_ext_list_price-ws_ext_discount_amt) year_total ,'w' sale_type from customer ,web_sales ,date_dim where c_customer_sk = ws_bill_customer_sk and ws_sold_date_sk = d_date_sk group by c_customer_id ,c_first_name ,c_last_name ,c_preferred_cust_flag ,c_birth_country ,c_login ,c_email_address ,d_year ) select t_s_secyear.customer_id ,t_s_secyear.customer_first_name ,t_s_secyear.customer_last_name ,t_s_secyear.customer_email_address from year_total t_s_firstyear ,year_total t_s_secyear ,year_total t_w_firstyear ,year_total t_w_secyear where t_s_secyear.customer_id = t_s_firstyear.customer_id and t_s_firstyear.customer_id = t_w_secyear.customer_id and t_s_firstyear.customer_id = t_w_firstyear.customer_id and t_s_firstyear.sale_type = 's' and t_w_firstyear.sale_type = 'w' and t_s_secyear.sale_type = 's' and t_w_secyear.sale_type = 'w' and t_s_firstyear.dyear = 2001 and t_s_secyear.dyear = 2001+1 and t_w_firstyear.dyear = 2001 and t_w_secyear.dyear = 2001+1 and t_s_firstyear.year_total > 0 and t_w_firstyear.year_total > 0 and case when t_w_firstyear.year_total > 0 then t_w_secyear.year_total / t_w_firstyear.year_total else 0.0 end > case when t_s_firstyear.year_total > 0 then t_s_secyear.year_total / t_s_firstyear.year_total else 0.0 end order by t_s_secyear.customer_id ,t_s_secyear.customer_first_name ,t_s_secyear.customer_last_name ,t_s_secyear.customer_email_address limit 100; # predicate pushdown drop table if exists t1; create table t1 (id int, bench_type varchar(10),version varchar(10),tps int(20)); insert into t1 (id,bench_type,version,tps) values (1,'sysbench','5.4.0',1111111); insert into t1 (id,bench_type,version,tps) values (2,'sysbench','6.0.0',222222); with all_data as (select * from t1 ),version1 as (select * from all_data where version ='5.4.0' ),version2 as(select * from all_data where version ='6.0.0') select v1.tps v1_tps,v2.tps v2_tps from version1 v1, version2 v2 where v1.bench_type =v2.bench_type; desc format='brief' with all_data as (select * from t1 ),version1 as (select * from all_data where version ='5.4.0' ),version2 as(select * from all_data where version ='6.0.0') select v1.tps v1_tps,v2.tps v2_tps from version1 v1, version2 v2 where v1.bench_type =v2.bench_type; # issue 35404 drop table if exists tbl; create table tbl (id int); explain with t1 as (select id from tbl), t2 as (select a.id from t1 a join t1 b on a.id = b.id) select * from t2 where id in (select id from t2); # issue 35758 drop table if exists t1, t2, t3; create table t1 (a int, b int); create table t2 (c int, d int); create table t3 (e int, f int); insert into t1 values(1,1); insert into t2 values(1,1); insert into t3 values(1,1234); explain update t1 inner join (select t2.c from t2 inner join (with temp as (select e from t3 where t3.f = 1234) select e from temp) tt on t2.d = tt.e) t on t1.a = t.c set t1.b = 4321; update t1 inner join (select t2.c from t2 inner join (with temp as (select e from t3 where t3.f = 1234) select e from temp) tt on t2.d = tt.e) t on t1.a = t.c set t1.b = 4321; select * from t1; explain insert into t1 select t1.a, t1.b from t1 inner join (select t2.c from t2 inner join (with temp as (select e from t3 where t3.f = 1234) select e from temp) tt on t2.d = tt.e) t on t1.a = t.c; insert into t1 select t1.a, t1.b from t1 inner join (select t2.c from t2 inner join (with temp as (select e from t3 where t3.f = 1234) select e from temp) tt on t2.d = tt.e) t on t1.a = t.c; select * from t1; explain delete from t1 using t1 inner join (select t2.c from t2 inner join (with temp as (select e from t3 where t3.f = 1234) select e from temp) tt on t2.d = tt.e) t on t1.a = t.c; delete from t1 using t1 inner join (select t2.c from t2 inner join (with temp as (select e from t3 where t3.f = 1234) select e from temp) tt on t2.d = tt.e) t on t1.a = t.c; select * from t1;