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This commit is contained in:
Alexey Milovidov 2019-04-12 03:55:50 +03:00
parent 0db5ec9227
commit bd3c9833c4
2 changed files with 18 additions and 0 deletions
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3
dbms/tests/queries/0_stateless/00936_substring_utf8_non_const.reference
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@ -226,3 +226,6 @@ o, пр
lo, п
lo, п
lo, п
1
1
1

15
dbms/tests/queries/0_stateless/00936_substring_utf8_non_const.sql
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@ -25,3 +25,18 @@ SELECT substringUTF8(materialize('hello, привет'), 1, 10) FROM numbers(3);
SELECT substringUTF8(materialize('hello, привет'), 5, 5) FROM numbers(3);
SELECT substringUTF8(materialize('hello, привет'), -5) FROM numbers(3);
SELECT substringUTF8(materialize('hello, привет'), -10, 5) FROM numbers(3);
SELECT DISTINCT substring(toString(range(rand(1) % 50)), rand(2) % 50, rand(3) % 50) = substringUTF8(toString(range(rand(1) % 50)), rand(2) % 50, rand(3) % 50) AS res FROM numbers(1000000);
SELECT DISTINCT substring(toString(range(rand(1) % 50)), rand(2) % 50) = substringUTF8(toString(range(rand(1) % 50)), rand(2) % 50) AS res FROM numbers(1000000);
-- NOTE: The behaviour of substring and substringUTF8 is inconsistent when negative offset is greater than string size:
-- substring:
-- hello
-- ^-----^ - offset -10, length 7, result: "he"
-- substringUTF8:
-- hello
-- ^-----^ - offset -10, length 7, result: "hello"
-- SELECT DISTINCT substring(toString(range(rand(1) % 50)), -(rand(2) % 50), rand(3) % 50) = substringUTF8(toString(range(rand(1) % 50)), -(rand(2) % 50), rand(3) % 50) AS res FROM numbers(1000000);
SELECT DISTINCT substring(toString(range(rand(1) % 50)), -(rand(2) % 50)) = substringUTF8(toString(range(rand(1) % 50)), -(rand(2) % 50)) AS res FROM numbers(1000000);