mirror of
https://github.com/GreptimeTeam/greptimedb.git
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cc2f7efb98
* chore: bump datafusion version to fix `last_value` regression * fix: resolve PR comments * fix ci
103 lines
1.7 KiB
Plaintext
103 lines
1.7 KiB
Plaintext
CREATE TABLE t(a INTEGER, ts timestamp time index);
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Affected Rows: 0
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INSERT INTO t VALUES (1, 1), (null, 2), (3, 3);
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Affected Rows: 3
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SELECT ISNULL(a) from t;
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+-------------+
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| isnull(t.a) |
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+-------------+
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| false |
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| true |
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| false |
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+-------------+
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SELECT ISNULL(null);
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+--------------+
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| isnull(NULL) |
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+--------------+
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| true |
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+--------------+
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SELECT ISNULL(1);
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+------------------+
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| isnull(Int64(1)) |
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+------------------+
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| false |
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+------------------+
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SELECT ISNULL(-1);
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+-------------------+
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| isnull(Int64(-1)) |
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+-------------------+
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| false |
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+-------------------+
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SELECT ISNULL(1.0);
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+--------------------+
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| isnull(Float64(1)) |
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+--------------------+
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| false |
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+--------------------+
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SELECT ISNULL(true);
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+-----------------------+
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| isnull(Boolean(true)) |
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+-----------------------+
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| false |
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+-----------------------+
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SELECT ISNULL('string');
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+------------------------+
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| isnull(Utf8("string")) |
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+------------------------+
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| false |
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+------------------------+
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SELECT FIRST_VALUE(1);
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+-----------------------+
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| first_value(Int64(1)) |
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+-----------------------+
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| 1 |
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+-----------------------+
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SELECT FIRST_VALUE('a');
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+------------------------+
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| first_value(Utf8("a")) |
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+------------------------+
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| a |
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+------------------------+
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SELECT LAST_VALUE(1);
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+----------------------+
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| last_value(Int64(1)) |
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+----------------------+
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| 1 |
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+----------------------+
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SELECT LAST_VALUE('a');
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+-----------------------+
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| last_value(Utf8("a")) |
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+-----------------------+
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| a |
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+-----------------------+
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DROP TABLE t;
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Affected Rows: 0
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