[ESQL] Fix Binary Comparisons on Date Nanos (elastic#116346)

Relates to elastic#109992

When I implemented binary comparisons for date nanos in elastic#111908 I failed to update the verifyBinaryComparisons rule, which implements another layer of type checking for binary comparisons, external to the type logic in the Expression classes. Since the unit tests for the expressions don't run the full query processing stack, this bug was invisible to them. Only full integration tests, such as the CSV tests I've added here, can catch this kind of error. The initial PR did not include these because we didn't have enough supporting functions (notably TO_DATE_NANOS) to write the tests.

This PR fixes the issue by adding DATE_NANOS to the list of allowed types for binary comparisons in the verifier.

docs/changelog/116346.yaml

@@ -0,0 +1,5 @@
+pr: 116346
+summary: "[ESQL] Fix Binary Comparisons on Date Nanos"
+area: ES|QL
+type: bug
+issues: []

x-pack/plugin/esql/qa/testFixtures/src/main/resources/date_nanos.csv-spec

@@ -202,6 +202,83 @@ d:date_nanos
 null
 ;
 
+date nanos greater than
+required_capability: to_date_nanos
+required_capability: date_nanos_binary_comparison
+
+FROM date_nanos | WHERE MV_MIN(nanos) > TO_DATE_NANOS("2023-10-23T12:27:28.948000000Z") | SORT nanos DESC;
+
+millis:date              | nanos:date_nanos               | num:long
+2023-10-23T13:55:01.543Z | 2023-10-23T13:55:01.543123456Z | 1698069301543123456
+2023-10-23T13:53:55.832Z | 2023-10-23T13:53:55.832987654Z | 1698069235832987654
+2023-10-23T13:52:55.015Z | 2023-10-23T13:52:55.015787878Z | 1698069175015787878
+2023-10-23T13:51:54.732Z | 2023-10-23T13:51:54.732102837Z | 1698069114732102837
+2023-10-23T13:33:34.937Z | 2023-10-23T13:33:34.937193000Z | 1698068014937193000
+;
+
+date nanos greater than or equal
+required_capability: to_date_nanos
+required_capability: date_nanos_binary_comparison
+
+FROM date_nanos | WHERE MV_MIN(nanos) >= TO_DATE_NANOS("2023-10-23T12:27:28.948000000Z") | SORT nanos DESC;
+
+millis:date              | nanos:date_nanos               | num:long
+2023-10-23T13:55:01.543Z | 2023-10-23T13:55:01.543123456Z | 1698069301543123456
+2023-10-23T13:53:55.832Z | 2023-10-23T13:53:55.832987654Z | 1698069235832987654
+2023-10-23T13:52:55.015Z | 2023-10-23T13:52:55.015787878Z | 1698069175015787878
+2023-10-23T13:51:54.732Z | 2023-10-23T13:51:54.732102837Z | 1698069114732102837
+2023-10-23T13:33:34.937Z | 2023-10-23T13:33:34.937193000Z | 1698068014937193000
+2023-10-23T12:27:28.948Z | 2023-10-23T12:27:28.948000000Z | 1698064048948000000
+;
+
+date nanos less than
+required_capability: to_date_nanos
+required_capability: date_nanos_binary_comparison
+
+FROM date_nanos | WHERE MV_MIN(nanos) < TO_DATE_NANOS("2023-10-23T12:27:28.948000000Z") AND millis > "2000-01-01" | SORT nanos DESC;
+
+millis:date              | nanos:date_nanos               | num:long
+2023-10-23T12:15:03.360Z | 2023-10-23T12:15:03.360103847Z | 1698063303360103847
+2023-10-23T12:15:03.360Z | 2023-10-23T12:15:03.360103847Z | 1698063303360103847
+;
+
+date nanos less than equal
+required_capability: to_date_nanos
+required_capability: date_nanos_binary_comparison
+
+FROM date_nanos | WHERE MV_MIN(nanos) <= TO_DATE_NANOS("2023-10-23T12:27:28.948000000Z") AND millis > "2000-01-01" | SORT nanos DESC;
+
+millis:date              | nanos:date_nanos               | num:long
+2023-10-23T12:27:28.948Z | 2023-10-23T12:27:28.948000000Z | 1698064048948000000
+2023-10-23T12:15:03.360Z | 2023-10-23T12:15:03.360103847Z | 1698063303360103847
+2023-10-23T12:15:03.360Z | 2023-10-23T12:15:03.360103847Z | 1698063303360103847
+;
+
+date nanos equals
+required_capability: to_date_nanos
+required_capability: date_nanos_binary_comparison
+
+FROM date_nanos | WHERE MV_MIN(nanos) == TO_DATE_NANOS("2023-10-23T12:27:28.948000000Z");
+
+millis:date              | nanos:date_nanos               | num:long
+2023-10-23T12:27:28.948Z | 2023-10-23T12:27:28.948000000Z | 1698064048948000000
+;
+
+date nanos not equals
+required_capability: to_date_nanos
+required_capability: date_nanos_binary_comparison
+
+FROM date_nanos | WHERE MV_MIN(nanos) != TO_DATE_NANOS("2023-10-23T12:27:28.948000000Z") AND millis > "2000-01-01" | SORT nanos DESC;
+
+millis:date              | nanos:date_nanos               | num:long
+2023-10-23T13:55:01.543Z | 2023-10-23T13:55:01.543123456Z | 1698069301543123456
+2023-10-23T13:53:55.832Z | 2023-10-23T13:53:55.832987654Z | 1698069235832987654
+2023-10-23T13:52:55.015Z | 2023-10-23T13:52:55.015787878Z | 1698069175015787878
+2023-10-23T13:51:54.732Z | 2023-10-23T13:51:54.732102837Z | 1698069114732102837
+2023-10-23T13:33:34.937Z | 2023-10-23T13:33:34.937193000Z | 1698068014937193000
+2023-10-23T12:15:03.360Z | 2023-10-23T12:15:03.360103847Z | 1698063303360103847
+2023-10-23T12:15:03.360Z | 2023-10-23T12:15:03.360103847Z | 1698063303360103847
+;
 
 date nanos to long, index version
 required_capability: to_date_nanos

x-pack/plugin/esql/src/main/java/org/elasticsearch/xpack/esql/action/EsqlCapabilities.java

@@ -319,6 +319,11 @@ public enum Cap {
          */
         TO_DATE_NANOS(EsqlCorePlugin.DATE_NANOS_FEATURE_FLAG),
 
+        /**
+         * Support for date nanos type in binary comparisons
+         */
+        DATE_NANOS_BINARY_COMPARISON(EsqlCorePlugin.DATE_NANOS_FEATURE_FLAG),
+
         /**
          * Support Least and Greatest functions on Date Nanos type
          */

x-pack/plugin/esql/src/main/java/org/elasticsearch/xpack/esql/analysis/Verifier.java

@@ -507,6 +507,7 @@ public static Failure validateBinaryComparison(BinaryComparison bc) {
         }
         allowed.add(DataType.IP);
         allowed.add(DataType.DATETIME);
+        allowed.add(DataType.DATE_NANOS);
         allowed.add(DataType.VERSION);
         allowed.add(DataType.GEO_POINT);
         allowed.add(DataType.GEO_SHAPE);