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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>
94 lines
2.0 KiB
SQL
94 lines
2.0 KiB
SQL
-- String case conversion function tests
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-- Basic UPPER and LOWER functions
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SELECT UPPER('hello world');
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SELECT LOWER('HELLO WORLD');
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SELECT UPPER('MiXeD cAsE');
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SELECT LOWER('MiXeD cAsE');
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-- INITCAP (capitalize first letter of each word)
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SELECT INITCAP('hello world');
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SELECT INITCAP('HELLO WORLD');
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SELECT INITCAP('mIxEd CaSe TeSt');
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-- Test with NULL
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SELECT UPPER(NULL);
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SELECT LOWER(NULL);
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SELECT INITCAP(NULL);
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-- Test with numbers and special characters
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SELECT UPPER('hello123!@#');
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SELECT LOWER('HELLO123!@#');
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SELECT INITCAP('hello-world_test');
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-- Test with table data
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CREATE TABLE case_test("name" VARCHAR, city VARCHAR, ts TIMESTAMP TIME INDEX);
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INSERT INTO case_test VALUES
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('john doe', 'new york', 1000),
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('JANE SMITH', 'LOS ANGELES', 2000),
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('Bob Wilson', 'Chicago', 3000),
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('alice johnson', 'BOSTON', 4000);
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-- Apply case functions to table data
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SELECT "name", UPPER("name"), LOWER("name"), INITCAP("name") FROM case_test ORDER BY ts;
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SELECT city, UPPER(city), LOWER(city), INITCAP(city) FROM case_test ORDER BY ts;
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-- Combined case operations
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SELECT INITCAP(LOWER("name")) as formatted_name FROM case_test ORDER BY ts;
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-- Unicode case conversion
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SELECT UPPER('café');
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SELECT LOWER('CAFÉ');
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-- German characters
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SELECT UPPER('äöüß');
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-- German uppercase
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SELECT LOWER('ÄÖÜ');
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-- Greek letters
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SELECT UPPER('αβγ');
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SELECT LOWER('ΑΒΓ');
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-- Test with empty string
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SELECT UPPER('');
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SELECT LOWER('');
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SELECT INITCAP('');
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-- Test with single characters
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SELECT UPPER('a'), UPPER('A'), UPPER('1'), UPPER(' ');
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SELECT LOWER('a'), LOWER('A'), LOWER('1'), LOWER(' ');
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SELECT INITCAP('a'), INITCAP('A'), INITCAP('1');
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-- Complex Unicode examples
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CREATE TABLE unicode_case(s VARCHAR, ts TIMESTAMP TIME INDEX);
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INSERT INTO unicode_case VALUES
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('hello 世界', 1000),
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('HELLO 世界', 2000),
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('café à paris', 3000),
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('CAFÉ À PARIS', 4000);
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SELECT s, UPPER(s), LOWER(s), INITCAP(s) FROM unicode_case ORDER BY ts;
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DROP TABLE case_test;
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DROP TABLE unicode_case;
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