mirror of
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>
279 lines
8.4 KiB
Plaintext
279 lines
8.4 KiB
Plaintext
-- 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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+-------------------------------------------+
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| strpos(Utf8("hello world"),Utf8("world")) |
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+-------------------------------------------+
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| 7 |
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+-------------------------------------------+
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SELECT POSITION('xyz' IN 'hello world');
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+-----------------------------------------+
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| strpos(Utf8("hello world"),Utf8("xyz")) |
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+-----------------------------------------+
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| 0 |
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+-----------------------------------------+
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SELECT POSITION('' IN 'hello world');
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+--------------------------------------+
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| strpos(Utf8("hello world"),Utf8("")) |
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+--------------------------------------+
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| 1 |
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+--------------------------------------+
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SELECT POSITION('world' IN '');
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+--------------------------------+
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| strpos(Utf8(""),Utf8("world")) |
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+--------------------------------+
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| 0 |
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+--------------------------------+
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-- STRPOS function (same as POSITION)
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SELECT STRPOS('hello world', 'world');
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+-------------------------------------------+
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| strpos(Utf8("hello world"),Utf8("world")) |
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+-------------------------------------------+
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| 7 |
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+-------------------------------------------+
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SELECT STRPOS('hello world', 'xyz');
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+-----------------------------------------+
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| strpos(Utf8("hello world"),Utf8("xyz")) |
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+-----------------------------------------+
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| 0 |
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+-----------------------------------------+
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SELECT STRPOS('hello world', 'hello');
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+-------------------------------------------+
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| strpos(Utf8("hello world"),Utf8("hello")) |
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+-------------------------------------------+
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| 1 |
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+-------------------------------------------+
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SELECT STRPOS('hello world', 'o');
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+---------------------------------------+
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| strpos(Utf8("hello world"),Utf8("o")) |
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+---------------------------------------+
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| 5 |
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+---------------------------------------+
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-- INSTR function
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SELECT INSTR('hello world', 'world');
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+------------------------------------------+
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| instr(Utf8("hello world"),Utf8("world")) |
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+------------------------------------------+
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| 7 |
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+------------------------------------------+
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SELECT INSTR('hello world', 'o');
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+--------------------------------------+
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| instr(Utf8("hello world"),Utf8("o")) |
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+--------------------------------------+
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| 5 |
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+--------------------------------------+
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SELECT INSTR('hello world', 'xyz');
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+----------------------------------------+
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| instr(Utf8("hello world"),Utf8("xyz")) |
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+----------------------------------------+
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| 0 |
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+----------------------------------------+
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-- Case sensitive search
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SELECT POSITION('WORLD' IN 'hello world');
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+-------------------------------------------+
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| strpos(Utf8("hello world"),Utf8("WORLD")) |
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+-------------------------------------------+
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| 0 |
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+-------------------------------------------+
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SELECT POSITION('World' IN 'hello world');
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+-------------------------------------------+
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| strpos(Utf8("hello world"),Utf8("World")) |
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+-------------------------------------------+
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| 0 |
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+-------------------------------------------+
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-- LEFT and RIGHT functions
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SELECT LEFT('hello world', 5);
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+------------------------------------+
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| left(Utf8("hello world"),Int64(5)) |
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+------------------------------------+
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| hello |
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+------------------------------------+
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SELECT RIGHT('hello world', 5);
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+-------------------------------------+
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| right(Utf8("hello world"),Int64(5)) |
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+-------------------------------------+
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| world |
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+-------------------------------------+
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-- More than string length
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SELECT LEFT('hello', 10);
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+-------------------------------+
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| left(Utf8("hello"),Int64(10)) |
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+-------------------------------+
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| hello |
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+-------------------------------+
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-- More than string length
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SELECT RIGHT('hello', 10);
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+--------------------------------+
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| right(Utf8("hello"),Int64(10)) |
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+--------------------------------+
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| hello |
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+--------------------------------+
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-- Test with NULL values
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SELECT POSITION('world' IN NULL);
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+----------------------------+
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| strpos(NULL,Utf8("world")) |
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+----------------------------+
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+----------------------------+
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SELECT POSITION(NULL IN 'hello world');
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+----------------------------------+
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| strpos(Utf8("hello world"),NULL) |
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+----------------------------------+
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+----------------------------------+
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SELECT LEFT(NULL, 5);
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+---------------------+
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| left(NULL,Int64(5)) |
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+---------------------+
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+---------------------+
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SELECT RIGHT('hello', NULL);
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+---------------------------+
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| right(Utf8("hello"),NULL) |
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+---------------------------+
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+---------------------------+
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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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Affected Rows: 0
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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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Affected Rows: 5
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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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+-------------+--------+---+---+
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| s | search | a | b |
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+-------------+--------+---+---+
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| hello world | world | 7 | 7 |
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| hello world | hello | 1 | 1 |
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| hello world | xyz | 0 | 0 |
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| programming | gram | 4 | 4 |
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| database | base | 5 | 5 |
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+-------------+--------+---+---+
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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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+-------------+--------------------------------+---------------------------------+
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| s | left(position_test.s,Int64(5)) | right(position_test.s,Int64(5)) |
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+-------------+--------------------------------+---------------------------------+
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| hello world | hello | world |
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| hello world | hello | world |
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| hello world | hello | world |
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| programming | progr | mming |
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| database | datab | abase |
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+-------------+--------------------------------+---------------------------------+
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-- Unicode position tests
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SELECT POSITION('世' IN 'hello世界');
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+--------------------------------------+
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| strpos(Utf8("hello世界"),Utf8("世")) |
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+--------------------------------------+
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| 6 |
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+--------------------------------------+
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SELECT POSITION('界' IN 'hello世界');
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+--------------------------------------+
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| strpos(Utf8("hello世界"),Utf8("界")) |
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+--------------------------------------+
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| 7 |
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+--------------------------------------+
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SELECT STRPOS('café shop', 'é');
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+-------------------------------------+
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| strpos(Utf8("café shop"),Utf8("é")) |
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+-------------------------------------+
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| 4 |
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+-------------------------------------+
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SELECT LEFT('中文测试', 2);
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+---------------------------------+
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| left(Utf8("中文测试"),Int64(2)) |
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+---------------------------------+
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| 中文 |
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+---------------------------------+
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SELECT RIGHT('中文测试', 2);
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+----------------------------------+
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| right(Utf8("中文测试"),Int64(2)) |
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+----------------------------------+
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| 测试 |
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+----------------------------------+
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-- Multiple occurrences (finds first one)
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SELECT POSITION('o' IN 'hello world');
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+---------------------------------------+
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| strpos(Utf8("hello world"),Utf8("o")) |
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+---------------------------------------+
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| 5 |
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+---------------------------------------+
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SELECT STRPOS('hello world', 'l');
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+---------------------------------------+
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| strpos(Utf8("hello world"),Utf8("l")) |
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+---------------------------------------+
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| 3 |
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+---------------------------------------+
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DROP TABLE position_test;
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Affected Rows: 0
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