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# name: test/optimizer/pushdown_set_op.test
# description: Pushdown set operations
# group: [optimizer]
statement ok
PRAGMA explain_output = 'OPTIMIZED_ONLY'
query II
explain select 42 intersect select 42;
----
logical_opt <REGEX>:.*INTERSECT.*
# intersect is empty if either side is empty
query II
explain select 42 intersect select 42 where 1=0;
----
logical_opt <!REGEX>:.*INTERSECT.*
query II
explain select 42 where 1=0 intersect select 42;
----
logical_opt <!REGEX>:.*INTERSECT.*
# except is empty if LHS is empty
query II
explain select 42 where 1=0 except select 42;
----
logical_opt <!REGEX>:.*EXCEPT.*
# if RHS is empty we can optimize away the except
query II
explain select 42 except all select 42 where 1=0;
----
logical_opt <!REGEX>:.*EXCEPT.*
# now pushdown subquery with set ops
query II
explain select * from (select 42 intersect select 42) tbl(i) where i=42;
----
logical_opt <REGEX>:.*INTERSECT.*
query II
explain select * from (select 42 intersect all select 43) tbl(i) where i=42;
----
logical_opt <!REGEX>:.*INTERSECT.*
query II
explain select * from (select 43 intersect all select 42) tbl(i) where i=42;
----
logical_opt <!REGEX>:.*INTERSECT.*
query II
explain select * from (select 42 except select 42) tbl(i) where i=42;
----
logical_opt <REGEX>:.*EXCEPT.*
query II
explain select * from (select 42 except all select 43) tbl(i) where i=42;
----
logical_opt <!REGEX>:.*EXCEPT.*
query II
explain select * from (select 43 except all select 42) tbl(i) where i=42;
----
logical_opt <!REGEX>:.*EXCEPT.*
query I
select 42 intersect select 42;
----
42
query I
select 42 intersect select 42 where 1=0;
----
query I
select 42 where 1=0 intersect select 42;
----
query I
select 42 where 1=0 except select 42;
----
query I
select 42 except select 42 where 1=0;
----
42
query I
select * from (select 42 intersect select 42) tbl(i) where i=42;
----
42
query I
select * from (select 42 intersect select 43) tbl(i) where i=42;
----
query I
select * from (select 43 intersect select 42) tbl(i) where i=42;
----
query I
select * from (select 42 except select 42) tbl(i) where i=42;
----
query I
select * from (select 42 except select 43) tbl(i) where i=42;
----
42
query I
select * from (select 43 except select 42) tbl(i) where i=42;
----
|
