144 lines
3.4 KiB
SQL
144 lines
3.4 KiB
SQL
# name: test/optimizer/statistics/statistics_setop.test
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# description: Statistics propagation test with set operations
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# group: [statistics]
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statement ok
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CREATE TABLE integers AS SELECT * FROM (VALUES (1), (2), (3)) tbl(i);
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statement ok
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CREATE TABLE integers2 AS SELECT * FROM (VALUES (4), (5), (6)) tbl(i);
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statement ok
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CREATE TABLE integers3 AS SELECT * FROM (VALUES (4), (5), (NULL)) tbl(i);
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statement ok
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PRAGMA explain_output = OPTIMIZED_ONLY;
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# union all
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# total min/max after union all is [1, 6]: 7 is out of bounds, so i=7 can be optimized away
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query II
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EXPLAIN SELECT i=7 FROM (SELECT * FROM integers UNION ALL SELECT * FROM integers2) tbl(i);
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----
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logical_opt <!REGEX>:.*\(i = 7\).*
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# 5 is in bounds, so this cannot be optimized away
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query II
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EXPLAIN SELECT i=5 FROM (SELECT * FROM integers UNION ALL SELECT * FROM integers2) tbl(i);
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----
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logical_opt <REGEX>:.*\(i = 5\).*
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# neither integers nor integers2 has null values, so this is false
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query II
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EXPLAIN SELECT i IS NULL FROM (SELECT * FROM integers UNION ALL SELECT * FROM integers2) tbl(i);
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----
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logical_opt <!REGEX>:.*IS NULL.*
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# integers3 has null values, so once we include integers3 we need to execute the IS_NULL predicate
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query II
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EXPLAIN SELECT i IS NULL FROM (SELECT * FROM integers UNION ALL SELECT * FROM integers2 UNION ALL SELECT * FROM integers3) tbl(i);
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----
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logical_opt <REGEX>:.*IS NULL.*
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# except
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# except has the same stats as the LHS (as in the worst case, nothing is filtered out)
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# in this case the LHS stats are [4, 6] without null values
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query II
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EXPLAIN SELECT i=7 FROM (SELECT * FROM integers2 EXCEPT SELECT * FROM integers3) tbl(i);
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----
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logical_opt <!REGEX>:.*\(i = 7\).*
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query II
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EXPLAIN SELECT i=5 FROM (SELECT * FROM integers2 EXCEPT SELECT * FROM integers3) tbl(i);
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----
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logical_opt <REGEX>:.*\(i = 5\).*
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query II
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EXPLAIN SELECT i IS NULL FROM (SELECT * FROM integers2 EXCEPT SELECT * FROM integers3) tbl(i);
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----
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logical_opt <!REGEX>:.*IS NULL.*
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# intersect
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# intersect has as stats the intersection of the LHS with the RHS
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# in this case that would be [4, 5] with no null values
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# however, we don't actually intersect the stats yet, so limit our testing to the stats of the LHS
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query II
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EXPLAIN SELECT i=7 FROM (SELECT * FROM integers2 INTERSECT SELECT * FROM integers3) tbl(i);
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----
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logical_opt <!REGEX>:.*\(i = 7\).*
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query II
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EXPLAIN SELECT i=5 FROM (SELECT * FROM integers2 INTERSECT SELECT * FROM integers3) tbl(i);
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----
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logical_opt <REGEX>:.*\(i = 5\).*
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# now check the results of all these queries
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query I
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SELECT i=7 FROM (SELECT * FROM integers UNION ALL SELECT * FROM integers2) tbl(i);
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----
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0
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0
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0
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0
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0
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0
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query I
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SELECT i=5 FROM (SELECT * FROM integers UNION ALL SELECT * FROM integers2) tbl(i);
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----
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0
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0
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0
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0
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1
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0
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query I
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SELECT i IS NULL FROM (SELECT * FROM integers UNION ALL SELECT * FROM integers2) tbl(i);
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----
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0
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0
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0
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0
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0
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0
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query I
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SELECT i IS NULL FROM (SELECT * FROM integers UNION ALL SELECT * FROM integers2 UNION ALL SELECT * FROM integers3) tbl(i);
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----
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0
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0
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0
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0
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0
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0
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0
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0
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1
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query I
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SELECT i=7 FROM (SELECT * FROM integers2 EXCEPT SELECT * FROM integers3) tbl(i);
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----
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0
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query I
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SELECT i=5 FROM (SELECT * FROM integers2 EXCEPT SELECT * FROM integers3) tbl(i);
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----
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0
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query I
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SELECT i IS NULL FROM (SELECT * FROM integers2 EXCEPT SELECT * FROM integers3) tbl(i);
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----
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0
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query I
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SELECT i=7 FROM (SELECT * FROM integers2 INTERSECT SELECT * FROM integers3) tbl(i);
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----
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0
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0
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query I
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SELECT i=5 FROM (SELECT * FROM integers2 INTERSECT SELECT * FROM integers3) tbl(i) ORDER BY i;
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----
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0
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1
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