# name: test/sql/function/string/test_jaccard.test
# description: Test jaccard function
# group: [string]

statement ok
PRAGMA enable_verification

# jaccard
query I
SELECT jaccard('hello', 'hello')
----
1

query I
SELECT jaccard('hello', NULL)
----
NULL

query I
SELECT jaccard(NULL, 'hello')
----
NULL

query I
SELECT jaccard(NULL, NULL)
----
NULL

query I
SELECT jaccard('ab', 'aabb')
----
1.0

query I
SELECT jaccard('aabb', 'ab')
----
1.0

query I
SELECT jaccard('ab', 'cd')
----
0.0

query I
SELECT jaccard('cd', 'ab')
----
0.0

query I
SELECT round(jaccard('ab', 'aabbcc'), 3)
----
0.667

query I
SELECT round(jaccard('aabbcc', 'ab'), 3)
----
0.667

query I
SELECT round(jaccard('aabbccddeeff', 'ab'), 3)
----
0.333

query I
SELECT round(jaccard('ab', 'aabbccddeeff'), 3)
----
0.333

query I
SELECT round(jaccard('aabbccddeeffg', 'ab'), 3)
----
0.286

query I
SELECT round(jaccard('ab', 'aaaabbbccddeeffgabcccc'), 3)
----
0.286

query I
SELECT round(jaccard('ababababababba', 'aaaabbbccddeeffgabcccc'), 3)
----
0.286

statement error
SELECT jaccard('hello', '')
----

statement error
SELECT jaccard('', 'hello')
----

statement error
SELECT jaccard('', '')
----


statement ok
CREATE TABLE strings(s VARCHAR, t VARCHAR)

statement ok
INSERT INTO strings VALUES ('hello', 'hallo'), ('aloha', 'fello'), ('fellow', 'ducks'), (NULL, NULL)

query I
select round(jaccard(s, t), 1) from strings
----
0.6
0.3
0.0
NULL

query I
select round(jaccard(s, 'hallo'), 1) from strings
----
0.6
1.0
0.3
NULL

query I
select round(jaccard('hallo', t), 1) from strings
----
1.0
0.3
0.0
NULL

query I
select round(jaccard(NULL, t), 1) from strings
----
NULL
NULL
NULL
NULL

query I
select round(jaccard(s, NULL), 1) from strings
----
NULL
NULL
NULL
NULL

statement error
select round(jaccard('', t), 1) from strings
----

statement error
select round(jaccard(s, ''), 1) from strings
----