DOC: CHANGELOG

CHANGELOG.md

@@ -37,6 +37,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Deprecated ###
 
+
 ### Removed ###
 
 * unused procedures:
@@ -46,6 +47,12 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Fixed ###
 
+* Fixed the `>=` and `<=` operators for comparisons in POV query filters with
+  stored DATE values. The fix makes the implementation consistent 
+  However, the current definition and implementation of the
+  `>=` and `<=` operators for date and datetime is unintuitive and the operators
+  should have another name. Something like "overlap with or smaller/greater
+  than". 
 * Semi-fix in `retrieveEntityParents`. The old implementation was buggy and
   would return no parent name or even a wrong one for old entity versions in
   some cases. The semi-fix will allways return the current name of the parent

procedures/query/getDateTimeWhereClause.sql

@@ -85,7 +85,14 @@ BEGIN
             RETURN CONCAT(" ",
                 seconds_col, operator, vDateTimeSecLow, IF(vDateTimeNSLow IS NULL, '', CONCAT(' OR (',seconds_col,'=', vDateTimeSecLow, ' AND ',nanos_col, operator, vDateTimeNSLow, ')')));
         ELSEIF operator = '>=' or operator = '<=' THEN
-            RETURN CONCAT(" ",seconds_col, operator, vDateTimeSecLow, IF(vDateTimeNSLow IS NULL, '', CONCAT(' AND (',seconds_col, operator_prefix, vDateTimeSecLow, ' OR ',nanos_col, operator, vDateTimeNSLow, ')')));
+            RETURN CONCAT(
+                " ", seconds_col, operator, vDateTimeSecLow,
+                IF(vDateTimeNSLow IS NULL,
+                    '',
+                    CONCAT(
+                        ' AND (', seconds_col, operator_prefix, vDateTimeSecLow,
+                        ' OR ', nanos_col, operator, vDateTimeNSLow,
+                        ' OR ', nanos_col, ' IS NULL)')));
         ELSEIF operator = "(" THEN
             RETURN IF(vDateTimeNSLow IS NULL,CONCAT(" ",seconds_col,"=", vDateTimeSecLow),CONCAT(" ",seconds_col,"=",vDateTimeSecLow," AND ",nanos_col,"=",vDateTimeNSLow));
         ELSEIF operator = "!(" THEN