[DOCS] Explain ES|QL CASE behavior with even no. arguments (elastic#1…

…01829)
kilfoyle · Nov 7, 2023 · 4a2ed90 · 4a2ed90
1 parent 34d0391
commit 4a2ed90
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/docs/reference/esql/functions/case.asciidoc b/docs/reference/esql/functions/case.asciidoc
@@ -27,7 +27,8 @@ Accepts pairs of conditions and values. The function returns the value that
 belongs to the first condition that evaluates to `true`.
 
 If the number of arguments is odd, the last argument is the default value which
-is returned when no condition matches.
+is returned when no condition matches. If the number of arguments is even, and
+no condition matches, the function returns `null`.
 
 *Example*