Merge remote-tracking branch 'origin' into bug-fix/restrict-hybrid-di…

…sjoint-sg-directions
arangodb · mchacki · May 24, 2022 · Apr 5, 2022 · Apr 5, 2022 · Apr 25, 2022
commit 39521851fd7809cbd5ef4a40c08d9e93d181610e
diff --git a/CHANGELOG b/CHANGELOG
@@ -18,6 +18,17 @@ devel
   queries the results are not well-defined. If you have a use-case where
   this restriction hits you, please contact us.
 
+* Added `[?]` array operator to AQL, which works as follows:
+  - `nonArray[?]`: returns `false`
+  - `nonArray[? FILTER CURRENT ...]`: returns `false`
+  - `array[?]`: returns `false` if array is empty, `true` otherwise
+  - `array[? FILTER CURRENT ...]`: returns `false` if no array member
+     satisfies the filter condition, returns `true` if at least one
+     member satistifies it.
+
+* Fixed Github issue #16279: assertion failure/crash in AQL query optimizer when
+  permuting adjacent FOR loops that depended on each other.
+
 * No good reason to fatal error in agency state, when local database entries
   lack local timestamp (legacy). In that situation, we will record epoch begin
 	as local time.