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[discrete]
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[[esql-atan2]]
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=== `ATAN2`
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*Syntax*
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[.text-center]
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image::esql/functions/signature/atan2.svg[Embedded,opts=inline]
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*Parameters*
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`y`::
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Numeric expression. If `null`, the function returns `null`.
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`x`::
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Numeric expression. If `null`, the function returns `null`.
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*Description*
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The {wikipedia}/Atan2[angle] between the positive x-axis and the ray from the
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origin to the point (x , y) in the Cartesian plane, expressed in radians.
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*Supported types*
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include::types/atan2.asciidoc[]
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*Example*
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[source.merge.styled,esql]
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----
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include::{esql-specs}/floats.csv-spec[tag=atan2]
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----
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[%header.monospaced.styled,format=dsv,separator=|]
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|===
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include::{esql-specs}/floats.csv-spec[tag=atan2-result]
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|===
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