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mariadb/mysql-test/t/derived_cond_pushdown.test
Igor Babaev 9b27d3e86e Fixed bug mdev-11608. 
The fix for bug mdev-11488 introduced the virtual method
convert_to_basic_const_item for the class Item_cache.
The implementation of this method for the class Item_cache_str
was not quite correct: the server could crash if the cached item
was null.
A similar problem could appear for the implementation of
this method for the class Item_cache_decimal. Although I could not
reproduce the problem I decided to change the code appropriately.
2016-12-20 11:08:50 -08:00

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let $no_pushdown= set statement optimizer_switch='condition_pushdown_for_derived=off' for;
create table t1 (a int, b int, c int);
create table t2 (a int, b int, c int, d decimal);
insert into t1 values
(1,21,345), (1,33,7), (8,33,114), (1,21,500), (1,19,107), (5,14,787),
(8,33,123), (9,10,211), (5,16,207), (1,33,988), (5,27,132), (1,21,104),
(6,20,309), (6,20,315), (1,21,101), (8,33,404), (9,10,800), (1,21,123),
(7,11,708), (6,20,214);
insert into t2 values
(2,3,207,207.0000), (1,21,909,12.0000), (7,13,312,406.0000),
(8,64,248,107.0000), (6,20,315,279.3333), (1,19,203,107.0000),
(8,80,800,314.0000), (3,12,231,190.0000), (6,23,303,909.0000);
create table t1_double(a int, b double, c double);
insert into t1_double values
(1,23.4,14.3333), (1,12.5,18.9), (3,12.5,18.9),
(4,33.4,14.3333), (4,14.3333,13.65), (5,17.89,7.22),
(6,33.4,14.3), (10,33.4,13.65), (11,33.4,13.65);
create table t2_double(a int, b double, c double);
insert into t2_double values
(1,22.4,14.3333), (1,12.5,18.9), (2,22.4,18.9),
(4,33.4,14.3333), (5,22.4,13.65), (7,17.89,18.9),
(6,33.4,14.3333), (10,31.4,13.65), (12,33.4,13.65);
create table t1_char(a char, b char(8), c int);
insert into t1_char values
('a','Ivan',1), ('b','Vika',2), ('b','Inga',6), ('c','Vika',7),
('b','Ivan',7), ('a','Alex',6), ('b','Inga',5), ('d','Ron',9),
('d','Harry',2), ('d','Hermione',3), ('c','Ivan',3), ('c','Harry',4);
create table t2_char(a char, b char(8), c int);
insert into t2_char values
('b','Ivan',1), ('c','Vinny',3), ('c','Inga',9), ('a','Vika',1),
('c','Ivan',2), ('b','Ali',6), ('c','Inga',2), ('a','Ron',9),
('d','Harry',1), ('b','Hermes',3), ('b','Ivan',11), ('b','Harry',4);
create table t1_decimal (a decimal(3,1), b decimal(3,1), c int);
insert into t1_decimal values
(1,1,23),(2,2,11),(3,3,16),
(1,1,12),(1,1,14),(2,3,15),
(2,1,13),(2,3,11),(3,3,16);
create table t2_decimal (a decimal(3,1), b decimal(3,1), c int);
insert into t2_decimal values
(2,1,13),(2,2,11),(3,3,16),
(1,3,22),(1,3,14),(2,2,15),
(2,1,43),(2,3,11),(2,3,16);
create view v1 as select a, b, max(c) as max_c, avg(c) as avg_c from t1
group by a,b having max_c < 707;
create view v2 as select a, b, max(c) as max_c, avg(c) as avg_c from t1
where t1.a>5 group by a,b having max_c < 707;
create view v3 as select a, b, min(c) as min_c from t1
where t1.a<10 group by a,b having min_c > 109;
create view v4 as
select a, b, min(max_c) as min_c from v1
where (v1.a<15) group by a,b;
create view v_union as
select a, b, min(c) as c from t1
where t1.a<10 group by a,b having c > 109
union
select a, b, max(c) as c from t1
where t1.b>10 group by a,b having c < 300;
create view v2_union as
select a, b, min(c) as c from t1
where t1.a<10 group by a,b having c > 109
union
select a, b, max(c) as c from t1
where t1.b>10 group by a,b having c < 300
union
select a, b, avg(c) as c from t1
where t1.c>300 group by a,b having c < 707;
create view v3_union as
select a, b, (a+1) as c from t1
where t1.a<10
union
select a, b, c from t1
where t1.b>10 and t1.c>100;
create view v4_union as
select a, b, max(c)-100 as c from t1
where t1.a<10 group by a,b having c > 109
union
select a, b, (c+100) as c from t1
where t1.b>10;
create view v_double as
select a, avg(a/4) as avg_a, b, c from t1_double
where (b>12.2) group by b,c having (avg_a<22.333);
create view v_char as
select a, b, max(c) as max_c from t1_char
group by a,b having max_c < 9;
create view v_decimal as
select a, b, avg(c) as avg_c from t1_decimal
group by a,b having (avg_c>12);
--echo # conjunctive subformula : pushing into HAVING
let $query= select * from v1,t2 where (v1.max_c>214) and (t2.a>v1.a);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;
let $query=
select * from
(select a, b, max(c) as max_c, avg(c) as avg_c from t1
group by a,b having max_c < 707) v1,
t2 where (v1.a=t2.a) and (v1.max_c>300);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;
--echo # extracted or formula : pushing into HAVING
let $query=
select * from v1,t2 where
((v1.max_c>400) and (t2.a>v1.a)) or ((v1.max_c<135) and (t2.a<v1.a));
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;
let $query=
select * from v1,t2 where
((v1.max_c>300) and (v1.avg_c>t2.d) and (v1.b=t2.b)) or
((v1.max_c<135) and (v1.max_c<t2.c) and (v1.a=t2.a));
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;
--echo # conjunctive subformula : pushing into WHERE
let $query= select * from v1,t2 where (v1.a>6) and (t2.b>v1.b);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;
let $query= select * from v2,t2 where (v2.b>25) and (t2.a<v2.a);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;
--echo # extracted or formula : pushing into WHERE
let $query=
select * from v1,t2 where
((v1.a>7) and (t2.c<v1.max_c)) or ((v1.a<2) and (t2.b<v1.b));
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;
let $query=
select * from v2,t2 where
((v2.a>7) and (t2.c<v2.max_c)) or ((v2.a>5) and (t2.b<v2.b));
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;
let $query=
select * from v1,t2 where
((v1.a>4) and (v1.b>t2.b) and (v1.max_c=t2.d)) or
((v1.a<2) and (v1.max_c<t2.c) and (v1.max_c=t2.d));
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;
--echo # conjunctive subformulas : pushing into HAVING and WHERE
let $query=
select * from v1,t2 where (v1.a<2) and (v1.max_c>400) and (t2.b>v1.b);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;
let $query=
select * from v_double as v,t2_double as t where
(v.a=t.a) and (v.avg_a>0.45) and (v.b>10);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;
let $query=
select * from v_decimal as v,t2_decimal as t where
(v.a=t.a) and (v.avg_c>15) and (v.b>1);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;
--echo # extracted or formula : pushing into HAVING and WHERE
let $query=
select * from v1,t2 where
((v1.a>7) and (v1.max_c>300) and (t2.c<v1.max_c)) or
((v1.a<4) and (v1.max_c<500) and (t2.b<v1.b));
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;
let $query=
select * from v1,t2 where ((v1.a<2) and (v1.max_c>120)) or (v1.a>7);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;
--echo # extracted or formulas : pushing into WHERE and HAVING
let $query=
select * from v1,t2 where
((v1.a<2) and (v1.max_c>120) and (v1.b=t2.b)) or (v1.a>7);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;
let $query=
select * from v1,t2 where
((v1.a<2) and (v1.max_c<200) and (t2.c>v1.max_c) and (v1.max_c=t2.d)) or
((v1.a>4) and (v1.max_c<500) and (t2.b<v1.b) and (v1.max_c=t2.c));
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;
--echo # prepare of a query containing extracted or formula
prepare stmt from "select * from v1,t2 where
((v1.max_c>400) and (t2.a>v1.a)) or ((v1.max_c<135) and (t2.a<v1.a));";
execute stmt;
execute stmt;
deallocate prepare stmt;
prepare stmt from
"explain format=json select * from v1,t2 where
((v1.max_c>400) and (t2.a>v1.a)) or ((v1.max_c<135) and (t2.a<v1.a));";
execute stmt;
execute stmt;
deallocate prepare stmt;
--echo # conjunctive subformula : pushing into WHERE
--echo # pushing equalities
let $query=
select * from v1,t2 where (t2.a=v1.a) and (v1.b=t2.b) and (v1.a=1);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;
let $query= select * from v1,t2 where (v1.a=5) and (v1.max_c=t2.d);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;
--echo # conjunctive subformula : pushing into WHERE using equalities
let $query= select * from v1,t2 where (t2.a<5) and (v1.a=t2.a);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;
let $query=
select * from v1,t2 where (v1.a=v1.b) and (v1.a=t2.a);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;
--echo # conjunctive subformula : pushing into HAVING using equalities
let $query= select * from v1,t2 where (t2.c>150) and (v1.max_c=t2.c);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;
--echo # extracted and formula : pushing into WHERE
--echo # pushing equalities
let $query=
select * from v1,t2 where (v1.a=v1.b) and (v1.a=t2.a) and (v1.a=3);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;
let $query=
select * from v1,t2 where (v1.a=1) and (v1.b=21) and (t2.a=2);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;
let $query=
select * from v_char as v,t2_char as t where
(v.a='c') and (v.b<'Hermes') and ((v.b=t.b) or (v.max_c>20));
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;
--echo # extracted and formula : pushing into WHERE using equalities
--echo # pushing equalities
let $query=
select * from v_decimal as v,t2_decimal as t where
(v.a=v.b) and (v.b=t.b) and ((t.b>1) or (v.a=1));
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;
--echo # extracted or formula : pushing into HAVING using equalities
let $query=
select * from v1,t2
where ((t2.a<4) and (v1.a=t2.a)) or ((t2.c>150) and (v1.max_c=t2.c));
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;
--echo # conjunctive subformulas : pushing into WHERE and HAVING using equalities
let $query=
select * from v1,t2
where ((t2.a>5) and (v1.a=t2.a)) and ((t2.c>250) and (v1.max_c=t2.c));
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;
--echo # conjunctive subformulas : pushing into WHERE and HAVING
--echo # pushing equalities
let $query=
select * from
(select a, b, max(c) as max_c, avg(c) as avg_c from t1
group by a,b having max_c < 707) v1,
t2 where (v1.a=8) and (v1.a=t2.a) and (v1.max_c=404);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;
--echo # conjunctive subformulas : pushing into WHERE and HAVING
let $query=
select * from v1,t2 where
(v1.a>3) and (v1.max_c>200) and (t2.b<v1.b) and (t2.d=v1.max_c);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;
--echo # conjunctive subformula : pushing into WHERE
--echo # extracted or formula : pushing into HAVING using equalities
--echo # pushing equalities
let $query=
select * from v_double as v,t2_double as t where
(v.b=v.c) and (v.c=t.c) and ((t.c>10) or (v.a=1));
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;
--echo # conjunctive subformula : pushing into WHERE
--echo # extracted or formula : pushing into HAVING using equalities
let $query=
select * from v_double as v,t2_double as t where
(((v.a>0.2) or (v.b<17)) or (t.c>17)) and (t.c=v.c) and (v.c>18);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;
--echo # extracted or formula : pushing into WHERE
--echo # conjunctive subformula : pushing into HAVING
--echo # pushing equalities
let $query=
select * from v_decimal as v,t2_decimal as t where
(((v.a>4) or (v.a=2)) or (v.b>3)) and (v.avg_c=13);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;
let $query=
select * from
(select a, b, max(c) as max_c, avg(c) as avg_c from t1
where t1.a>5 group by a,b having max_c < 707) v1,
t2 where (v1.a=t2.a) and (v1.max_c>300) and (v1.a=v1.b);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;
--echo # nothing to push
let $query=
select * from v1,t2 where (t2.a<2) and (t2.c>900);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;
let $query= select * from v1,t2 where (v1.a=t2.a) and (v1.b=t2.b);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;
let $query=
select * from v1,t2 where
(t2.a=v1.a) or (v1.b=t2.b) and ((v1.a=1) or (v1.a=6));
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;
let $query=
select * from v1,t2 where (v1.a=1) or (v1.b=21) or (t2.a=2);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;
let $query=
select * from v1,t2 where
(t2.a<2) and (t2.c>900) and ((v1.a<t2.a) or (t2.a<11));
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;
--echo # using several derived tables : nothing to push
let $query= select * from v1,v2,t2 where
(v1.a=v2.a) and (v1.a=t2.a) and (v2.b<50);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;
let $query=
select * from v1,v2,t2 where
((v1.a=v2.a) or (v1.a=t2.a)) and (t2.b<50) and (v1.b=v2.b);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;
let $query=
select * from v1,v2,t2 where
((v1.a=v2.a) and (v1.a=t2.a)) or ((v2.b>13) and (t2.c<115));
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;
--echo # using several derived tables : pushing in all tables
--echo # conjunctive subformula : pushing into HAVING
--echo # extracted or formula : pushing into WHERE
--echo # pushing equalities
let $query=
select * from v1,v2,t2 where ((v1.a=v2.a) or (v1.a=t2.a)) and
((v2.b<50) or (v2.b=19)) and (v1.max_c<300);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;
--echo # using several derived tables : pushing only in one table
--echo # conjunctive subformula : pushing into WHERE
--echo # pushing equalities
let $query=
select * from v1,v2,t2 where
(v1.a=t2.a) and (v1.a=v1.b) and (v1.a=v2.a) and (v2.max_c<300);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;
--echo # using several derived tables : pushing only in one table
--echo # extracted and formula : pushing into WHERE
--echo # conjunctive subformula : pushing into WHERE using equalities
--echo # pushing equalities
let $query=
select * from v1,v2,t2 where (v1.a=1) and (v1.b>10) and (v1.b=v2.b);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;
--echo # extracted or formula : pushing into WHERE
--echo # conjunctive subformula : pushing into WHERE using equalities
--echo # pushing equalities
let $query=
select * from v_char as v,t2_char as t where
(v.a=t.a) and (t.a='b') and ((v.b='Vika') or (v.b='Ali'));
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;
--echo # using several derived tables : pushing in all tables
--echo # extracted or formula : pushing into WHERE
--echo # conjunctive subformulas : pushing into HAVING
--echo # pushing equalities
let $query=
select * from v1,v2,v3,t2 where
((v1.a=v2.a) or (v1.a=t2.a)) and ((v3.b<50) or (v3.b=33))
and (v1.max_c<500) and (v3.a=t2.a) and (v2.max_c>300);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;
--echo # using several derived tables : pushing in all tables
--echo # conjunctive subformulas : pushing into HAVING
let $query=
select * from
(select a, b, max(c) as max_c, avg(c) as avg_c from t1
where t1.a>5 group by a,b having max_c < 707) v1,
(select a, b, min(c) as min_c from t1
where t1.a>5 group by a,b having min_c < 707) v2,
t2 where (v1.a=v2.a) and (v1.b=t2.b) and (v1.max_c>130) and (v2.min_c<130);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;
--echo # using several derived tables : pushing in all tables
--echo # extracted or formulas : pushing into HAVING
--echo # conjunctive subformula : pushing into HAVING
let $query=
select * from
(select a, b, max(c) as max_c, avg(c) as avg_c from t1
where t1.a>5 group by a,b having max_c < 707) v1,
(select a, b, min(c) as min_c from t1
where t1.a>5 group by a,b having min_c < 707) v2,
(select a, b, avg(c) as avg_c from t1
where t1.a<8 group by a,b) v3,
t2 where (v1.a=v2.a) and (v1.b=v3.b) and ((v3.avg_c>170) or (v3.a<5))
and ((v1.avg_c<400) or (v1.a>1)) and (v2.min_c<200);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;
--echo # extracted or formula : pushing into HAVING
--echo # conjunctive subformula : pushing into WHERE
let $query=
select * from
(select a, b, max(c) as max_c, avg(c) as avg_c from t1
group by a,b having max_c < 707) v1,
t2 where ((v1.a=1) or (v1.max_c<300)) and (v1.b>25);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;
--echo # extracted and formula : pushing into WHERE
--echo # conjunctive subformula : pushing into HAVING
let $query=
select * from
(select a, b, max(c) as max_c, avg(c) as avg_c from t1
where t1.a>5 group by a,b having max_c < 707) v1,
t2 where (v1.a=t2.a) and (v1.max_c>300) and (v1.b<30);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;
--echo # using query with union
--echo # conjunctive subformula : pushing into WHERE
--echo # conjunctive subformulas : pushing into HAVING and WHERE
let $query=
select * from v1,t2 where (v1.a<5) and (v1.b=t2.b) and (t2.c>800)
union
select * from v1,t2 where (v1.max_c>100) and (v1.a>7) and (t2.d>800);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;
--echo # using query with union
--echo # extracted and formula : pushing into WHERE
--echo # extracted or formula : pushing into HAVING
--echo # pushing equalities
let $query=
select * from v1,t2 where (v1.a<5) and (v1.b=t2.b) and (v1.b=19)
union
select * from v1,t2 where ((v1.max_c>400) or (v1.avg_c>270)) and (v1.a<t2.a);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;
--echo # using query with union
--echo # extracted or formula : pushing into HAVING
--echo # extracted or formula : pushing into WHERE
--echo # pushing equalities
let $query=
select * from v1,t2 where
((t2.a=v1.a) or (v1.b=t2.b)) and ((v1.a=1) or (v1.a=6))
union
select * from v1,t2 where ((v1.a>3) and (v1.b>27)) or (v1.max_c>550);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;
--echo # using query with union
--echo # extracted or formula : pushing into HAVING
--echo # conjunctive subformulas : pushing into WHERE
--echo # pushing equalities
let $query=
select * from v1,t2 where
((v1.a=1) and (v1.a=t2.a)) and ((v1.max_c<500) or (v1.avg_c>500))
union
select * from v2,t2 where
((v2.a<t2.b) or (v2.max_c>200)) and (v2.b>10) and (t2.a<2)
union
select * from v2,t2 where
(v2.max_c=t2.c) and (v2.b<10);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;
--echo # using derived table with union
--echo # conjunctive subformulas : pushing into WHERE and HAVING
let $query= select * from v_union,t2 where (v_union.a<3) and (v_union.c>100);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;
--echo # using derived table with union
--echo # conjunctive subformula : pushing into WHERE
--echo # extracted or formula : pushing into HAVING
let $query=
select * from v_union,t2 where
((v_union.a<2) or (v_union.c>800)) and (v_union.b>12);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;
--echo # using derived table with union
--echo # conjunctive subformula : pushing into HAVING
--echo # conjunctive subformula : pushing into WHERE
--echo # pushing equalities
let $query=
select * from v_union,t2 where
(v_union.a=1) and (v_union.a=t2.a) and (v_union.c<200);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;
let $query=
select * from v_char as v,t2_char as t where
(v.a=t.a) and (v.b='Vika') and (v.max_c>2);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;
--echo # using derived table with union
--echo # using several derived tables : pushing in all tables
--echo # conjunctive subformula : pushing into WHERE using equalities
--echo # pushing equalities
let $query=
select * from v_union,v1,t2 where
(v_union.a=v1.a) and (v1.a=t2.a) and (t2.a=1)
and ((v_union.c>800) or (v1.max_c>200));
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;
--echo # using derived table with union
--echo # extracted or formula : pushing into WHERE
--echo # conjunctive subformula : pushing into HAVING
--echo # pushing equalities
let $query=
select * from v2_union as v,t2 where
((v.a=6) or (v.a=8)) and (v.c>200) and (v.a=t2.a);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;
--echo # using derived table with union of selects without aggregation
--echo # extracted conjunctive predicate: pushing in WHERE of both selects
let $query=
select * from v3_union as v,t2 where (v.a=t2.a) and (v.c>6);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;
--echo # using derived table with union of selects without aggregation
--echo # extracted conjunctive OR subformula: pushing in WHERE using equalities
let $query=
select * from v3_union as v,t2 where (v.a=t2.a) and ((t2.a>1) or (v.b<20));
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;
--echo # using derived table with union of selects without aggregation
--echo # extracted the whole condition: in WHERE of both selects
let $query=
select * from v3_union as v,t2 where
(v.a=t2.a) and ((v.b=19) or (v.b=21)) and ((v.c<3) or (v.c>600));
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;
--echo # using derived table with union of
--echo # a select without aggregation and a select with aggregation
--echo # extracted conjunctive predicate: pushing in WHERE of both selects
let $query=
select * from v4_union as v,t2 where (v.a=t2.a) and (v.b<20);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;
--echo # using derived table with union of
--echo # a select without aggregation and a select with aggregation
--echo # extracted subformula: pushing in WHERE of one select
--echo # extracted subformula: pushing in HAVING of the other select
--echo # extracted sub-subformula: pushing in WHERE of the other select
--echo # using an equality in all pushdowns
let $query=
select * from v4_union as v,t2 where
(v.a=t2.a) and ((t2.a<3) or (v.b<40)) and (v.c>500);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;
--echo # using embedded derived table : pushing the same conditions
--echo # using several derived tables : pushing in all tables
--echo # conjunctive subformula : pushing into WHERE
--echo # extracted and formula : pushing into WHERE
let $query=
select * from v4,v1 where
(v4.a<13) and (v1.a>5) and (v1.b>12);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;
--echo # using embedded view : nothing to push
--echo # using several derived tables : pushing only in one table
--echo # conjunctive subformula : pushing into WHERE
let $query=
select * from v4,v1,t2 where
(v4.a=t2.a) and (v4.a=v1.a) and (v1.b>30);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;
--echo # using embedded view : pushing different conditions
--echo # using several derived tables : pushing in all tables
--echo # conjunctive subformula : pushing into WHERE using equalities
--echo # extracted and formula : pushing into WHERE using equalities
--echo # conjunctive subformula : pushing into HAVING
let $query=
select * from v4,v1,t2 where
(v4.a=t2.a) and (v4.a>1) and (v4.a=v1.a) and (v4.min_c>100) and (v1.b<30);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;
--echo # using embedded view : pushing different conditions
--echo # using several derived tables : pushing in all tables
--echo # extracted or formula : pushing into WHERE
--echo # conjunctive subformula : pushing into HAVING
let $query=
select * from v4,v1,t2 where
(((v4.b>10) and (v4.a>1)) or (v4.b<20)) and (v1.max_c>200) and (v1.a=v4.a);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;
--echo # using embedded view : pushing different conditions
--echo # using several derived tables : pushing only in one table
--echo # extracted or formula : pushing into WHERE
--echo # extracted or formula : pushing into HAVING
let $query=
select * from v4,v2 where
((v4.a>12) and (v4.min_c<300) and (v4.b>13)) or (v4.a<1);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;
--echo # using embedded view : pushing different conditions
--echo # using several derived tables : pushing only in one table
--echo # conjunctive subformula : pushing into WHERE
--echo # conjunctive subformula : pushing into HAVING
--echo # pushing equalities
let $query=
select * from v4,v2 where
(v4.a=v2.b) and (v4.a=v4.b) and (v4.min_c<100);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;
--echo # using embedded view : pushing the same conditions
--echo # using several derived tables : pushing in all tables
--echo # extracted and formula : pushing into WHERE using equalities
--echo # conjunctive subformula : pushing into WHERE
--echo # pushing equalities
let $query=
select * from v4,v2 where
(v4.a=v2.b) and (v4.a=v4.b) and (v2.b<30);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;
--echo # using embedded view : pushing the same conditions
--echo # using several derived tables : pushing in all tables
--echo # extracted or formula : pushing into WHERE using equalities
--echo # extracted and formula : pushing into WHERE using equalities
--echo # pushing equalities
let $query=
select * from v4,v2 where
(v4.a=v2.b) and (v4.a=v4.b) and ((v2.b<30) or (v4.a>2));
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;
--echo # using embedded view : pushing the same conditions
--echo # using several derived tables : pushing in all tables
--echo # extracted or formula : pushing into WHERE
--echo # conjunctive subformula : pushing into WHERE
--echo # pushing equalities
let $query=
select * from v4,v2 where
(((v4.a<12) and (v4.b>13)) or (v4.a>10)) and
(v4.min_c=v2.max_c) and (v4.min_c>100);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;
--echo # using embedded view : pushing the same conditions
--echo # using several derived tables : pushing only in one table
--echo # extracted or formula : pushing into WHERE
let $query=
select * from v4,v2,t2 where
(((v4.a<12) and (t2.b>13)) or (v4.a>10)) and
(v4.min_c=t2.c) and (t2.c>100);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;
drop view v1,v2,v3,v4;
drop view v_union,v2_union,v3_union,v4_union;
drop view v_double,v_char,v_decimal;
drop table t1,t2,t1_double,t2_double,t1_char,t2_char,t1_decimal,t2_decimal;
--echo #
--echo # MDEV-10782: condition extracted from a multiple equality
--echo # pushed into HAVING
--echo #
CREATE TABLE t1 (i int);
INSERT INTO t1 VALUES (1),(2);
EXPLAIN EXTENDED
SELECT *
FROM ( SELECT * FROM ( SELECT MIN(i) as f FROM t1 ) sq1 ) AS sq2
WHERE f = 8;
SELECT *
FROM ( SELECT * FROM ( SELECT MIN(i) as f FROM t1 ) sq1 ) AS sq2
WHERE f = 8;
SELECT *
FROM ( SELECT * FROM ( SELECT MIN(i) as f FROM t1 ) sq1 ) AS sq2
WHERE f = 1;
DROP TABLE t1;
--echo #
--echo # MDEV-10783: pushdown into constant view
--echo #
CREATE TABLE t1 (i int) ENGINE=MyISAM;
CREATE VIEW v AS SELECT 5;
SELECT * FROM t1 WHERE 1 IN ( SELECT * FROM v );
DROP VIEW v;
DROP TABLE t1;
--echo #
--echo # MDEV-10785: second execution of a query with condition
--echo # pushed into view
--echo #
CREATE TABLE t1 (i int);
CREATE VIEW v1 AS SELECT i FROM t1 WHERE i < 5;
CREATE FUNCTION f (in1 int) RETURNS int RETURN in1;
CREATE VIEW v2 AS SELECT * FROM v1 GROUP BY i;
PREPARE stmt FROM "SELECT * FROM v2 WHERE f(0) <> 2";
EXECUTE stmt;
EXECUTE stmt;
DROP FUNCTION f;
DROP VIEW v2,v1;
DROP TABLE t1;
--echo #
--echo # MDEV-10884: condition pushdown into derived specified by
--echo # 1. unit with SELECT containing ORDER BY ... LIMIT
--echo # 2. unit containing global ORDER BY ... LIMIT
--echo #
create table t1(a int);
insert into t1 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
select a from t1 order by a limit 5;
set statement optimizer_switch='condition_pushdown_for_derived=off' for
select * from (select a from t1 order by a limit 5) t where t.a not in (1,2,3);
set statement optimizer_switch='condition_pushdown_for_derived=on' for
select * from (select a from t1 order by a limit 5) t where t.a not in (1,2,3);
select a from t1 where a < 4 union select a from t1 where a > 5
order by a limit 5;
set statement optimizer_switch='condition_pushdown_for_derived=off' for
select * from
(select a from t1 where a < 4 union select a from t1 where a > 5
order by a limit 5) t where t.a not in (2,9);
set statement optimizer_switch='condition_pushdown_for_derived=on' for
select * from
(select a from t1 where a < 4 union select a from t1 where a > 5
order by a limit 5) t where t.a not in (2,9);
drop table t1;
--echo #
--echo # MDEV-11072: pushdown of the condition obtained
--echo # after constant row substitution
--echo #
CREATE TABLE t1 (a INT) ENGINE=MyISAM;
CREATE TABLE t2 (b INT) ENGINE=MyISAM;
CREATE OR REPLACE VIEW v2 AS SELECT * FROM t2;
CREATE TABLE t3 (c INT) ENGINE=MyISAM;
CREATE OR REPLACE ALGORITHM=TEMPTABLE VIEW v3 AS SELECT * FROM t3;
SELECT * FROM t1 WHERE a IN (
SELECT b FROM v2 WHERE b < a OR b IN (
SELECT c FROM v3 WHERE c = a
)
);
INSERT INTO t1 VALUES (2);
INSERT INTO t2 VALUES (3), (2);
INSERT INTO t3 VALUES (4), (1), (2), (7);
SELECT * FROM t1 WHERE a IN (
SELECT b FROM v2 WHERE b < a OR b IN (
SELECT c FROM v3 WHERE c = a
)
);
EXPLAIN FORMAT=JSON
SELECT * FROM t1 WHERE a IN (
SELECT b FROM v2 WHERE b < a OR b IN (
SELECT c FROM v3 WHERE c = a
)
);
CREATE TABLE t4 (d INT, e INT) ENGINE=MyISAM;
INSERT INTO t4 VALUES (1,10),(3,11),(2,10),(2,20),(3,21);
CREATE OR REPLACE VIEW v4 AS
SELECT d, sum(e) AS s FROM t4 GROUP BY d;
let $query =
SELECT * FROM t1 WHERE a IN (
SELECT b FROM v2 WHERE b < a OR b IN (
SELECT d FROM v4 WHERE s > a
)
);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;
DROP VIEW v2,v3,v4;
DROP TABLE t1,t2,t3,t4;
--echo #
--echo # MDEV-10800: pushdown of the condition obtained
--echo # after constant row substitution
--echo #
CREATE TABLE t1 (a INT) ENGINE=MyISAM;
INSERT INTO t1 VALUES (1);
CREATE TABLE t2 (b INT) ENGINE=MyISAM;
INSERT INTO t2 VALUES (3),(4);
CREATE OR REPLACE ALGORITHM=TEMPTABLE VIEW v2 AS SELECT * FROM t2;
SELECT * FROM
( SELECT * FROM t1
WHERE EXISTS ( SELECT * FROM v2 WHERE b = a ) ) AS sq;
EXPLAIN FORMAT=JSON
SELECT * FROM
( SELECT * FROM t1
WHERE EXISTS ( SELECT * FROM v2 WHERE b = a ) ) AS sq;
DROP VIEW v2;
DROP TABLE t1,t2;
--echo #
--echo # MDEV-11102: condition pushdown into materialized inner table
--echo # of outer join is not applied as not being valid
--echo #
CREATE TABLE t1 (a INT);
INSERT INTO t1 VALUES (0),(2);
CREATE TABLE t2 (b INT);
INSERT INTO t2 VALUES (1),(2);
CREATE OR REPLACE ALGORITHM=TEMPTABLE VIEW v2 AS SELECT * FROM t2;
SELECT * FROM t1 LEFT JOIN t2 ON a = b WHERE b IS NULL;
SELECT * FROM t1 LEFT JOIN v2 ON a = b WHERE b IS NULL;
EXPLAIN FORMAT=JSON
SELECT * FROM t1 LEFT JOIN v2 ON a = b WHERE b IS NULL;
DROP VIEW v2;
DROP TABLE t1,t2;
--echo #
--echo # MDEV-11103: pushdown condition with ANY subquery
--echo #
CREATE TABLE t1 (i INT);
CREATE OR REPLACE ALGORITHM=TEMPTABLE VIEW v1 AS SELECT * FROM t1;
INSERT INTO t1 VALUES (1),(2);
EXPLAIN FORMAT=JSON
SELECT * FROM v1 WHERE i <= ANY ( SELECT 3 );
SELECT * FROM v1 WHERE i <= ANY ( SELECT 3 );
DROP VIEW v1;
DROP TABLE t1;
--echo #
--echo # MDEV-11315: condition with outer reference to mergeable derived
--echo #
CREATE TABLE t1 (pk1 INT PRIMARY KEY, a INT, b INT) ENGINE=MyISAM;
INSERT INTO t1 VALUES (10,7,1),(11,0,2);
CREATE TABLE t2 (pk2 INT PRIMARY KEY, c INT, d DATETIME) ENGINE=MyISAM;
INSERT INTO t2 VALUES
(1,4,'2008-09-27 00:34:58'),
(2,5,'2007-05-28 00:00:00'),
(3,6,'2009-07-25 09:21:20');
CREATE VIEW v1 AS SELECT * FROM t1;
CREATE ALGORITHM=TEMPTABLE VIEW v2 AS SELECT * FROM t2;
SELECT * FROM v1 AS sq
WHERE b IN ( SELECT pk2 FROM v2 WHERE c > sq.b ) OR b = 100;
EXPLAIN FORMAT=JSON
SELECT * FROM v1 AS sq
WHERE b IN ( SELECT pk2 FROM v2 WHERE c > sq.b ) OR b = 100;
SELECT * FROM ( SELECT * FROM t1 ) AS sq
WHERE b IN ( SELECT pk2 FROM v2 WHERE c > sq.b ) OR b = 100;
EXPLAIN FORMAT=JSON
SELECT * FROM ( SELECT * FROM t1 ) AS sq
WHERE b IN ( SELECT pk2 FROM v2 WHERE c > sq.b ) OR b = 100;
DROP VIEW v1,v2;
DROP TABLE t1,t2;
--echo #
--echo # MDEV-11313: pushdown of the condition obtained
--echo # after constant row substitution
--echo #
CREATE TABLE t1 (a INT) ENGINE=MyISAM;
INSERT INTO t1 VALUES (1),(2);
CREATE TABLE t2 (b INT) ENGINE=MyISAM;
INSERT INTO t2 VALUES (50);
CREATE ALGORITHM=TEMPTABLE VIEW v1 AS SELECT * FROM t1;
SELECT ( SELECT COUNT(*) FROM v1 WHERE a = t2.b ) AS f FROM t2 GROUP BY f;
EXPLAIN FORMAT=JSON
SELECT ( SELECT COUNT(*) FROM v1 WHERE a = t2.b ) AS f FROM t2 GROUP BY f;
CREATE TABLE t3 (a INT, b INT) ENGINE=MYISAM;
INSERT INTO t3 VALUES (1,10),(3,11),(2,10),(2,20),(3,21);
CREATE VIEW v2 AS SELECT a, sum(b) AS s FROM t3 GROUP BY a ;
SELECT ( SELECT COUNT(*) FROM v2 WHERE s < t2.b ) AS f FROM t2 GROUP BY f;
EXPLAIN FORMAT=JSON
SELECT ( SELECT COUNT(*) FROM v2 WHERE s < t2.b ) AS f FROM t2 GROUP BY f;
DROP VIEW v1,v2;
DROP TABLE t1,t2,t3;
--echo #
--echo # MDEV-10882: pushdown of the predicate with cached value
--echo #
CREATE TABLE t1 (a INT NOT NULL, b INT NOT NULL) ENGINE=MyISAM;
CREATE OR REPLACE ALGORITHM=TEMPTABLE VIEW v1 AS SELECT * FROM t1;
INSERT INTO t1 VALUES (1,2),(3,4);
CREATE TABLE t2 (c INT NOT NULL) ENGINE=MyISAM;
INSERT INTO t2 VALUES (5),(6);
SELECT a, GROUP_CONCAT(b) FROM v1
WHERE b IN ( SELECT COUNT(c) FROM t2 ) GROUP BY a;
EXPLAIN FORMAT=JSON
SELECT a, GROUP_CONCAT(b) FROM v1
WHERE b IN ( SELECT COUNT(c) FROM t2 ) GROUP BY a;
DROP VIEW v1;
DROP TABLE t1,t2;
--echo #
--echo # MDEV-10836: pushdown of the predicate with cached value
--echo #
CREATE TABLE t (pk INT PRIMARY KEY, f INT) ENGINE=MyISAM;
CREATE ALGORITHM=TEMPTABLE VIEW v AS SELECT * FROM t;
INSERT INTO t VALUES (1,1),(3,2);
SELECT * FROM v AS v1, v AS v2
WHERE v2.pk > v1.f AND v1.f IN ( SELECT COUNT(pk) FROM t );
EXPLAIN FORMAT=JSON
SELECT * FROM v AS v1, v AS v2
WHERE v2.pk > v1.f AND v1.f IN ( SELECT COUNT(pk) FROM t );
DROP VIEW v;
DROP TABLE t;
--echo #
--echo # MDEV-11488: pushdown of the predicate with cached value
--echo #
CREATE TABLE t1 (i INT) ENGINE=MyISAM;
INSERT INTO t1 VALUES (1),(3),(2);
CREATE TABLE t2 (j INT, KEY(j)) ENGINE=MyISAM;
INSERT INTO t2 VALUES (3),(4);
SELECT * FROM ( SELECT DISTINCT * FROM t1 ) AS sq
WHERE i IN ( SELECT MIN(j) FROM t2 );
EXPLAIN FORMAT=JSON
SELECT * FROM ( SELECT DISTINCT * FROM t1 ) AS sq
WHERE i IN ( SELECT MIN(j) FROM t2 );
UPDATE t2 SET j = 2 WHERE j = 3;
SELECT * FROM ( SELECT DISTINCT * FROM t1 ) AS sq
WHERE i IN ( SELECT MIN(j) FROM t2 );
DROP TABLE t1,t2;
CREATE TABLE t1 (i FLOAT) ENGINE=MyISAM;
INSERT INTO t1 VALUES (1.5),(3.2),(2.71);
CREATE TABLE t2 (j FLOAT, KEY(j)) ENGINE=MyISAM;
INSERT INTO t2 VALUES (3.2),(2.71);
SELECT * FROM ( SELECT DISTINCT * FROM t1 ) AS sq
WHERE i IN ( SELECT MIN(j) FROM t2 );
EXPLAIN FORMAT=JSON
SELECT * FROM ( SELECT DISTINCT * FROM t1 ) AS sq
WHERE i IN ( SELECT MIN(j) FROM t2 );
DROP TABLE t1,t2;
CREATE TABLE t1 (i DECIMAL(10,2)) ENGINE=MyISAM;
INSERT INTO t1 VALUES (1.5),(3.21),(2.47);
CREATE TABLE t2 (j DECIMAL(10,2), KEY(j)) ENGINE=MyISAM;
INSERT INTO t2 VALUES (3.21),(4.55);
SELECT * FROM ( SELECT DISTINCT * FROM t1 ) AS sq
WHERE i IN ( SELECT MIN(j) FROM t2 );
EXPLAIN FORMAT=JSON
SELECT * FROM ( SELECT DISTINCT * FROM t1 ) AS sq
WHERE i IN ( SELECT MIN(j) FROM t2 );
DROP TABLE t1,t2;
CREATE TABLE t1 (i VARCHAR(32)) ENGINE=MyISAM;
INSERT INTO t1 VALUES ('cc'),('aa'),('ddd');
CREATE TABLE t2 (j VARCHAR(16), KEY(j)) ENGINE=MyISAM;
INSERT INTO t2 VALUES ('bbb'),('aa');
SELECT * FROM ( SELECT DISTINCT * FROM t1 ) AS sq
WHERE i IN ( SELECT MIN(j) FROM t2 );
EXPLAIN FORMAT=JSON
SELECT * FROM ( SELECT DISTINCT * FROM t1 ) AS sq
WHERE i IN ( SELECT MIN(j) FROM t2 );
DROP TABLE t1,t2;
CREATE TABLE t1 (i DATETIME) ENGINE=MyISAM;
INSERT INTO t1 VALUES
('2008-09-27 00:34:58'),('2007-05-28 00:00:00'), ('2009-07-25 09:21:20');
CREATE TABLE t2 (j DATETIME, KEY(j)) ENGINE=MyISAM;
INSERT INTO t2 VALUES
('2007-05-28 00:00:00'), ('2010-08-25 00:00:00');
SELECT * FROM ( SELECT DISTINCT * FROM t1 ) AS sq
WHERE i IN ( SELECT MIN(j) FROM t2 );
EXPLAIN FORMAT=JSON
SELECT * FROM ( SELECT DISTINCT * FROM t1 ) AS sq
WHERE i IN ( SELECT MIN(j) FROM t2 );
DROP TABLE t1,t2;
CREATE TABLE t1 (i DATE) ENGINE=MyISAM;
INSERT INTO t1 VALUES ('2008-09-27'),('2007-05-28'), ('2009-07-25');
CREATE TABLE t2 (j DATE, KEY(j)) ENGINE=MyISAM;
INSERT INTO t2 VALUES ('2007-05-28'), ('2010-08-25');
SELECT * FROM ( SELECT DISTINCT * FROM t1 ) AS sq
WHERE i IN ( SELECT MIN(j) FROM t2 );
EXPLAIN FORMAT=JSON
SELECT * FROM ( SELECT DISTINCT * FROM t1 ) AS sq
WHERE i IN ( SELECT MIN(j) FROM t2 );
DROP TABLE t1,t2;
CREATE TABLE t1 (i TIME) ENGINE=MyISAM;
INSERT INTO t1 VALUES ('00:34:58'),('10:00:02'), ('09:21:20');
CREATE TABLE t2 (j TIME, KEY(j)) ENGINE=MyISAM;
INSERT INTO t2 VALUES ('10:00:02'), ('11:00:10');
SELECT * FROM ( SELECT DISTINCT * FROM t1 ) AS sq
WHERE i IN ( SELECT MIN(j) FROM t2 );
EXPLAIN FORMAT=JSON
SELECT * FROM ( SELECT DISTINCT * FROM t1 ) AS sq
WHERE i IN ( SELECT MIN(j) FROM t2 );
DROP TABLE t1,t2;
--echo #
--echo # MDEV-11593: pushdown of condition with NULLIF
--echo #
CREATE TABLE t1 (i INT);
CREATE OR REPLACE ALGORITHM=TEMPTABLE VIEW v1 AS SELECT * FROM t1;
INSERT INTO t1 VALUES (2), (1);
SELECT * FROM v1 WHERE NULLIF(1, i);
EXPLAIN FORMAT=JSON
SELECT * FROM v1 WHERE NULLIF(1, i);
DROP VIEW v1;
DROP TABLE t1;
--echo #
--echo # MDEV-11608: pushdown of the predicate with cached null value
--echo #
CREATE TABLE t1 (c VARCHAR(3));
CREATE ALGORITHM=TEMPTABLE VIEW v1 AS SELECT * FROM t1;
INSERT INTO t1 VALUES ('foo'),('bar');
CREATE TABLE t2 (c VARCHAR(3));
INSERT INTO t2 VALUES ('foo'),('xyz');
SELECT * FROM v1 WHERE v1.c IN ( SELECT MIN(c) FROM t2 WHERE 0 );
EXPLAIN FORMAT=JSON
SELECT * FROM v1 WHERE v1.c IN ( SELECT MIN(c) FROM t2 WHERE 0 );
DROP VIEW v1;
DROP TABLE t1,t2;
CREATE TABLE t1 (d DECIMAL(10,2));
CREATE ALGORITHM=TEMPTABLE VIEW v1 AS SELECT * FROM t1;
INSERT INTO t1 VALUES (5.37),(1.1);
CREATE TABLE t2 (d DECIMAL(10,2));
INSERT INTO t2 VALUES ('1.1'),('2.23');
SELECT * FROM v1 WHERE v1.d IN ( SELECT MIN(d) FROM t2 WHERE 0 );
DROP VIEW v1;
DROP TABLE t1,t2;
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