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* feat: support function aliases and add MySQL-compatible aliases Signed-off-by: Dennis Zhuang <killme2008@gmail.com> * fix: get_table_function_source Signed-off-by: Dennis Zhuang <killme2008@gmail.com> * refactor: add function_alias mod Signed-off-by: Dennis Zhuang <killme2008@gmail.com> * fix: license Signed-off-by: Dennis Zhuang <killme2008@gmail.com> --------- Signed-off-by: Dennis Zhuang <killme2008@gmail.com>
73 lines
2.1 KiB
Plaintext
73 lines
2.1 KiB
Plaintext
-- MySQL-compatible function alias tests
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-- ucase -> upper
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SELECT
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ucase('dataFusion') AS ucase_value,
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upper('dataFusion') AS upper_value;
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+-------------+-------------+
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| ucase_value | upper_value |
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+-------------+-------------+
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| DATAFUSION | DATAFUSION |
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+-------------+-------------+
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-- lcase -> lower
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SELECT
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lcase('DataFusion') AS lcase_value,
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lower('DataFusion') AS lower_value;
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+-------------+-------------+
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| lcase_value | lower_value |
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+-------------+-------------+
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| datafusion | datafusion |
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+-------------+-------------+
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-- ceiling -> ceil
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SELECT
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ceiling(1.2) AS ceiling_pos,
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ceil(1.2) AS ceil_pos,
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ceiling(-1.2) AS ceiling_neg,
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ceil(-1.2) AS ceil_neg;
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+-------------+----------+-------------+----------+
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| ceiling_pos | ceil_pos | ceiling_neg | ceil_neg |
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+-------------+----------+-------------+----------+
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| 2.0 | 2.0 | -1.0 | -1.0 |
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+-------------+----------+-------------+----------+
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-- mid -> substr
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SELECT
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mid('datafusion', 5, 3) AS mid_value,
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substr('datafusion', 5, 3) AS substr_value;
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+-----------+--------------+
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| mid_value | substr_value |
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+-----------+--------------+
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| fus | fus |
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+-----------+--------------+
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-- rand -> random
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-- NOTE: RAND([seed]) is supported by MySQL, but seed is not supported here.
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-- This test only validates that rand() exists and returns values in [0, 1).
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SELECT rand() >= 0.0 AND rand() < 1.0 AS rand_in_range;
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+---------------+
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| rand_in_range |
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+---------------+
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| true |
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+---------------+
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-- std -> stddev_pop, variance -> var_pop
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SELECT
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round(std(x), 6) AS std_value,
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round(stddev_pop(x), 6) AS stddev_pop_value,
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round(variance(x), 6) AS variance_value,
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round(var_pop(x), 6) AS var_pop_value
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FROM (VALUES (1.0), (2.0), (3.0)) AS t(x);
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+-----------+------------------+----------------+---------------+
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| std_value | stddev_pop_value | variance_value | var_pop_value |
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+-----------+------------------+----------------+---------------+
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| 0.816497 | 0.816497 | 0.666667 | 0.666667 |
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+-----------+------------------+----------------+---------------+
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