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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>
85 lines
1.9 KiB
SQL
85 lines
1.9 KiB
SQL
-- String position/search function tests
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-- POSITION function
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SELECT POSITION('world' IN 'hello world');
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SELECT POSITION('xyz' IN 'hello world');
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SELECT POSITION('' IN 'hello world');
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SELECT POSITION('world' IN '');
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-- STRPOS function (same as POSITION)
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SELECT STRPOS('hello world', 'world');
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SELECT STRPOS('hello world', 'xyz');
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SELECT STRPOS('hello world', 'hello');
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SELECT STRPOS('hello world', 'o');
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-- INSTR function
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SELECT INSTR('hello world', 'world');
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SELECT INSTR('hello world', 'o');
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SELECT INSTR('hello world', 'xyz');
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-- Case sensitive search
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SELECT POSITION('WORLD' IN 'hello world');
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SELECT POSITION('World' IN 'hello world');
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-- LEFT and RIGHT functions
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SELECT LEFT('hello world', 5);
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SELECT RIGHT('hello world', 5);
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-- More than string length
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SELECT LEFT('hello', 10);
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-- More than string length
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SELECT RIGHT('hello', 10);
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-- Test with NULL values
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SELECT POSITION('world' IN NULL);
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SELECT POSITION(NULL IN 'hello world');
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SELECT LEFT(NULL, 5);
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SELECT RIGHT('hello', NULL);
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-- Test with table data
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CREATE TABLE position_test(s VARCHAR, "search" VARCHAR, ts TIMESTAMP TIME INDEX);
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INSERT INTO position_test VALUES
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('hello world', 'world', 1000),
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('hello world', 'hello', 2000),
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('hello world', 'xyz', 3000),
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('programming', 'gram', 4000),
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('database', 'base', 5000);
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SELECT s, "search", POSITION("search" IN s) AS a, STRPOS(s, "search") AS b FROM position_test ORDER BY ts;
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-- Test LEFT and RIGHT with table data
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SELECT s, LEFT(s, 5), RIGHT(s, 5) FROM position_test ORDER BY ts;
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-- Unicode position tests
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SELECT POSITION('世' IN 'hello世界');
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SELECT POSITION('界' IN 'hello世界');
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SELECT STRPOS('café shop', 'é');
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SELECT LEFT('中文测试', 2);
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SELECT RIGHT('中文测试', 2);
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-- Multiple occurrences (finds first one)
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SELECT POSITION('o' IN 'hello world');
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SELECT STRPOS('hello world', 'l');
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DROP TABLE position_test;
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