[arrow-datafusion] branch main updated: Modify doc for nanvl. (#7311)

[alamb]

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The following commit(s) were added to refs/heads/main by this push:
     new d2f9025ff4 Modify doc for nanvl. (#7311)
d2f9025ff4 is described below

commit d2f9025ff4cd9e94501131fa81c409e33c7c00ec
Author: Kousuke Saruta <saru...@apache.org>
AuthorDate: Thu Aug 17 03:52:09 2023 +0900

    Modify doc for nanvl. (#7311)
---
 datafusion/physical-expr/src/math_expressions.rs | 8 ++++----
 docs/source/user-guide/expressions.md            | 1 +
 2 files changed, 5 insertions(+), 4 deletions(-)

diff --git a/datafusion/physical-expr/src/math_expressions.rs 
b/datafusion/physical-expr/src/math_expressions.rs
index 907ca95951..4a5976387a 100644
--- a/datafusion/physical-expr/src/math_expressions.rs
+++ b/datafusion/physical-expr/src/math_expressions.rs
@@ -1057,9 +1057,9 @@ mod tests {
             Arc::new(Float64Array::from(vec![5.0, 6.0, f64::NAN, f64::NAN])), 
// x
         ];
 
-        let result = nanvl(&args).expect("failed to initialize function 
atan2");
+        let result = nanvl(&args).expect("failed to initialize function 
nanvl");
         let floats =
-            as_float64_array(&result).expect("failed to initialize function 
atan2");
+            as_float64_array(&result).expect("failed to initialize function 
nanvl");
 
         assert_eq!(floats.len(), 4);
         assert_eq!(floats.value(0), 1.0);
@@ -1075,9 +1075,9 @@ mod tests {
             Arc::new(Float32Array::from(vec![5.0, 6.0, f32::NAN, f32::NAN])), 
// x
         ];
 
-        let result = nanvl(&args).expect("failed to initialize function 
atan2");
+        let result = nanvl(&args).expect("failed to initialize function 
nanvl");
         let floats =
-            as_float32_array(&result).expect("failed to initialize function 
atan2");
+            as_float32_array(&result).expect("failed to initialize function 
nanvl");
 
         assert_eq!(floats.len(), 4);
         assert_eq!(floats.value(0), 1.0);
diff --git a/docs/source/user-guide/expressions.md 
b/docs/source/user-guide/expressions.md
index 630b158092..d8dfa7af53 100644
--- a/docs/source/user-guide/expressions.md
+++ b/docs/source/user-guide/expressions.md
@@ -101,6 +101,7 @@ expressions such as `col("a") + col("b")` to be used.
 | log(base, x)          | logarithm of x for a particular base              |
 | log10(x)              | base 10 logarithm                                 |
 | log2(x)               | base 2 logarithm                                  |
+| nanvl(x, y)           | returns x if x is not NaN otherwise returns y     |
 | pi()                  | approximate value of π                            |
 | power(base, exponent) | base raised to the power of exponent              |
 | radians(x)            | converts degrees to radians                       |