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https://github.com/GreptimeTeam/greptimedb.git
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d8563ba56d
* feat: adds format, regex_extract function and more type tests Signed-off-by: Dennis Zhuang <killme2008@gmail.com> * fix: forgot functions Signed-off-by: Dennis Zhuang <killme2008@gmail.com> * chore: forgot null type Signed-off-by: Dennis Zhuang <killme2008@gmail.com> * test: forgot date type Signed-off-by: Dennis Zhuang <killme2008@gmail.com> * feat: remove format function Signed-off-by: Dennis Zhuang <killme2008@gmail.com> * test: update results after upgrading datafusion Signed-off-by: Dennis Zhuang <killme2008@gmail.com> --------- Signed-off-by: Dennis Zhuang <killme2008@gmail.com>
64 lines
1.1 KiB
SQL
64 lines
1.1 KiB
SQL
-- String REVERSE function tests
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-- Basic REVERSE function
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SELECT REVERSE('hello');
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SELECT REVERSE('world');
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SELECT REVERSE('');
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SELECT REVERSE(NULL);
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-- REVERSE with numbers and special characters
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SELECT REVERSE('12345');
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SELECT REVERSE('hello!');
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SELECT REVERSE('a!@#$%b');
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-- REVERSE with palindromes
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SELECT REVERSE('radar');
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SELECT REVERSE('madam');
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SELECT REVERSE('racecar');
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-- Test with table data
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CREATE TABLE reverse_test(s VARCHAR, ts TIMESTAMP TIME INDEX);
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INSERT INTO reverse_test VALUES
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('hello', 1000),
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('world', 2000),
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('12345', 3000),
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('radar', 4000),
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('', 5000),
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(NULL, 6000);
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SELECT s, REVERSE(s) FROM reverse_test ORDER BY ts;
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-- Unicode REVERSE
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SELECT REVERSE('世界');
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SELECT REVERSE('café');
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SELECT REVERSE('🚀🌟');
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-- REVERSE with spaces
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SELECT REVERSE('hello world');
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SELECT REVERSE(' spaces ');
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-- Combining REVERSE with other functions
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SELECT UPPER(REVERSE('hello'));
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SELECT REVERSE(UPPER('hello'));
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SELECT LENGTH(REVERSE('hello world'));
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-- Double REVERSE (should return original)
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SELECT REVERSE(REVERSE('hello world'));
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SELECT REVERSE(REVERSE('中文测试'));
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DROP TABLE reverse_test;
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