170 lines
4.2 KiB
SQL
170 lines
4.2 KiB
SQL
# name: test/sql/join/semianti/semijoin.test
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# description: Test semi joins
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# group: [semianti]
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statement ok
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PRAGMA enable_verification
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statement ok
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CREATE TABLE left_table (a INTEGER, b INTEGER, c INTEGER);
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statement ok
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INSERT INTO left_table VALUES(42, 1, 1), (43, 1, 1);
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statement ok
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CREATE TABLE right_table (a INTEGER, b INTEGER);
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statement ok
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INSERT INTO right_table VALUES(42, 1);
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# * expression expands all of the left table
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query III
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SELECT * FROM left_table SEMI JOIN right_table ON left_table.a = right_table.a;
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----
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42 1 1
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# can filter on columns in left table
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query III
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SELECT * FROM left_table SEMI JOIN right_table ON left_table.a = right_table.a WHERE a > 5;
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----
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42 1 1
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# can have list type expressions in the condition
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query III
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SELECT * FROM left_table SEMI JOIN right_table ON ([left_table.a, left_table.b] = [right_table.a, right_table.b]);
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----
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42 1 1
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# right table can be a subquery
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query III
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SELECT * FROM left_table SEMI JOIN (SELECT a as foo from right_table where b = 1) buzz ON left_table.a = buzz.foo
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----
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42 1 1
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# Should throw error when filtering on column in right table
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statement error
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SELECT * FROM left_table SEMI JOIN right_table ON left_table.a = right_table.a WHERE right_table.a < 43;
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----
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Binder Error
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# left results are not deduplicated
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statement ok
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INSERT INTO left_table VALUES (42, 1, 5), (42, 1, 5), (42, 1, 5), (42, 1, 5);
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query III
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SELECT * FROM left_table SEMI JOIN right_table ON (left_table.a = right_table.a);
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----
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42 1 1
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42 1 5
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42 1 5
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42 1 5
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42 1 5
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query I
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CREATE TABLE other (a INTEGER, b INTEGER);
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statement ok
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INSERT INTO other VALUES (42, 1), (43, 1);
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# a table that is the result of a join can also be semi joined on
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query III
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SELECT * FROM left_table
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SEMI JOIN (select right_table.a FROM right_table JOIN other ON (other.a = right_table.a)) joined_right_table
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ON left_table.a = joined_right_table.a;
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----
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42 1 1
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42 1 5
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42 1 5
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42 1 5
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42 1 5
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statement ok
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DELETE FROM left_table where c=5;
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# USING COLUMNS also works
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query III
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SELECT * FROM left_table SEMI JOIN right_table USING (a);
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----
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42 1 1
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# natural semi join also works
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query III
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SELECT * FROM left_table NATURAL SEMI JOIN right_table;
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----
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42 1 1
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# also with subqueries
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query III
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SELECT * FROM left_table
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NATURAL SEMI JOIN (select right_table.a FROM right_table JOIN other ON (other.a = right_table.a)) joined_right_table;
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----
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42 1 1
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# test correlated queries
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# right_table.a and left_table.a have the value 42
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# only left_table.a has the value 43
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# test inequality joins
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query III
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SELECT * FROM left_table SEMI JOIN right_table ON (left_table.a <> right_table.a) ORDER BY a, c;
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----
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43 1 1
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# range joins
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query III
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SELECT * FROM left_table SEMI JOIN right_table ON (left_table.a > right_table.a);
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----
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43 1 1
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# complex condition resulting in an any join
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query III
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SELECT * FROM left_table SEMI JOIN right_table ON (left_table.a + right_table.a = 85 OR left_table.a + right_table.b = 84) order by left_table.a, left_table.c;
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----
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43 1 1
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statement ok
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INSERT INTO right_table VALUES (1, 42), (1, 42);
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# Insert more values so that the scan side in the cross product is the right hand side
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statement ok
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INSERT INTO left_table VALUES (42, 1, 5), (42, 1, 5), (42, 1, 5), (2000, 20000, 200000);
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# complex condition resulting in an any join
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query III
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SELECT * FROM left_table SEMI JOIN right_table ON (left_table.a + right_table.a = 85 OR left_table.a + right_table.b = 84) order by left_table.a, left_table.c;
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----
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42 1 1
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42 1 5
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42 1 5
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42 1 5
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43 1 1
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# complex condition resulting in an any join
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query III
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SELECT * FROM left_table SEMI JOIN right_table ON ((left_table.a = NULL AND right_table.a = NULL) OR left_table.a = right_table.a) order by left_table.a, left_table.c;
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----
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42 1 1
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42 1 5
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42 1 5
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42 1 5
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# correlated subqueries
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query II
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SELECT a as outer_a, (SELECT ANY_VALUE(b) FROM right_table where right_table.a != outer_a) right_table_b FROM left_table SEMI JOIN right_table ON (left_table.a = right_table.a) Order by outer_a, right_table_b;
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----
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42 42
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42 42
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42 42
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42 42
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statement ok
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SET scalar_subquery_error_on_multiple_rows=false
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query II
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SELECT a as outer_a, (SELECT b FROM right_table where right_table.a != outer_a) right_table_b FROM left_table SEMI JOIN right_table ON (left_table.a = right_table.a) Order by outer_a, right_table_b;
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----
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42 42
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42 42
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42 42
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42 42
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