40 lines
607 B
Markdown
40 lines
607 B
Markdown
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## `SIGNUM` [esql-signum]
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**Syntax**
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:::{image} ../../../../../images/signum.svg
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:alt: Embedded
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:class: text-center
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:::
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**Parameters**
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`number`
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: Numeric expression. If `null`, the function returns `null`.
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**Description**
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Returns the sign of the given number. It returns `-1` for negative numbers, `0` for `0` and `1` for positive numbers.
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**Supported types**
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| number | result |
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| --- | --- |
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| double | double |
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| integer | double |
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| long | double |
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| unsigned_long | double |
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**Example**
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```esql
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ROW d = 100.0
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| EVAL s = SIGNUM(d)
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```
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| d: double | s:double |
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| --- | --- |
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| 100 | 1.0 |
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