[[esql-pi]]
=== `PI`
The {wikipedia}/Pi[ratio] of a circle's circumference to its diameter.

[source.merge.styled,esql]
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include::{esql-specs}/math.csv-spec[tag=pi]
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[%header.monospaced.styled,format=dsv,separator=|]
|===
include::{esql-specs}/math.csv-spec[tag=pi-result]
|===