[8.x] [ES|QL] Update the functions definitions and tests to include d…

…ate_nanos (elastic#201078) (elastic#201278)

# Backport

This will backport the following commits from `main` to `8.x`:
- [[ES|QL] Update the functions definitions and tests to include
date_nanos (elastic#201078)](elastic#201078)

<!--- Backport version: 9.4.3 -->

### Questions ?
Please refer to the [Backport tool
documentation](https://github.com/sqren/backport)

<!--BACKPORT [{"author":{"name":"Stratoula
Kalafateli","email":"[email protected]"},"sourceCommit":{"committedDate":"2024-11-21T20:05:41Z","message":"[ES|QL]
Update the functions definitions and tests to include date_nanos
(elastic#201078)","sha":"9da8f87a8690e083c1c763941bd4e36d997f3de2","branchLabelMapping":{"^v9.0.0$":"main","^v8.18.0$":"8.x","^v(\\d+).(\\d+).\\d+$":"$1.$2"}},"sourcePullRequest":{"labels":["release_note:skip","v9.0.0","Feature:ES|QL","Team:ESQL","backport:version","v8.17.0","v8.18.0"],"title":"[ES|QL]
Update the functions definitions and tests to include
date_nanos","number":201078,"url":"https://github.com/elastic/kibana/pull/201078","mergeCommit":{"message":"[ES|QL]
Update the functions definitions and tests to include date_nanos
(elastic#201078)","sha":"9da8f87a8690e083c1c763941bd4e36d997f3de2"}},"sourceBranch":"main","suggestedTargetBranches":["8.17","8.x"],"targetPullRequestStates":[{"branch":"main","label":"v9.0.0","branchLabelMappingKey":"^v9.0.0$","isSourceBranch":true,"state":"MERGED","url":"https://github.com/elastic/kibana/pull/201078","number":201078,"mergeCommit":{"message":"[ES|QL]
Update the functions definitions and tests to include date_nanos
(elastic#201078)","sha":"9da8f87a8690e083c1c763941bd4e36d997f3de2"}},{"branch":"8.17","label":"v8.17.0","branchLabelMappingKey":"^v(\\d+).(\\d+).\\d+$","isSourceBranch":false,"state":"NOT_CREATED"},{"branch":"8.x","label":"v8.18.0","branchLabelMappingKey":"^v8.18.0$","isSourceBranch":false,"state":"NOT_CREATED"}]}]
BACKPORT-->

Co-authored-by: Stratoula Kalafateli <[email protected]>

packages/kbn-esql-validation-autocomplete/scripts/generate_function_definitions.ts

@@ -218,7 +218,7 @@ const functionEnrichments: Record<string, RecursivePartial<FunctionDefinition>>
     ],
   },
   mv_sort: {
-    signatures: new Array(9).fill({
+    signatures: new Array(10).fill({
       params: [{}, { acceptedValues: ['asc', 'desc'] }],
     }),
   },

packages/kbn-esql-validation-autocomplete/src/autocomplete/__tests__/autocomplete.command.stats.test.ts

@@ -150,6 +150,7 @@ describe('autocomplete.suggest', () => {
           ...getFieldNamesByType([
             ...ESQL_COMMON_NUMERIC_TYPES,
             'date',
+            'date_nanos',
             'boolean',
             'ip',
             'version',
@@ -158,7 +159,16 @@ describe('autocomplete.suggest', () => {
           ]),
           ...getFunctionSignaturesByReturnType(
             'stats',
-            [...ESQL_COMMON_NUMERIC_TYPES, 'date', 'boolean', 'ip', 'version', 'text', 'keyword'],
+            [
+              ...ESQL_COMMON_NUMERIC_TYPES,
+              'date',
+              'boolean',
+              'ip',
+              'version',
+              'text',
+              'keyword',
+              'date_nanos',
+            ],
             {
               scalar: true,
             }

packages/kbn-esql-validation-autocomplete/src/autocomplete/__tests__/autocomplete.suggest.eval.test.ts

@@ -370,8 +370,12 @@ describe('autocomplete.suggest', () => {
       // // Test suggestions for each possible param, within each signature variation, for each function
       for (const fn of scalarFunctionDefinitions) {
         // skip this fn for the moment as it's quite hard to test
-        // Add match in the text when the autocomplete is ready https://github.com/elastic/kibana/issues/196995
-        if (!['bucket', 'date_extract', 'date_diff', 'case', 'match', 'qstr'].includes(fn.name)) {
+        // Add match in the test when the autocomplete is ready https://github.com/elastic/kibana/issues/196995
+        if (
+          !['bucket', 'date_extract', 'date_diff', 'case', 'match', 'qstr', 'date_trunc'].includes(
+            fn.name
+          )
+        ) {
           test(`${fn.name}`, async () => {
             const testedCases = new Set<string>();
 
@@ -539,9 +543,9 @@ describe('autocomplete.suggest', () => {
         'from a | eval var0=date_trunc(/)',
         [
           ...getLiteralsByType('time_literal').map((t) => `${t}, `),
-          ...getFunctionSignaturesByReturnType('eval', 'time_duration', { scalar: true }).map(
-            (t) => `${t.text},`
-          ),
+          ...getFunctionSignaturesByReturnType('eval', ['time_duration', 'date_period'], {
+            scalar: true,
+          }).map((t) => `${t.text},`),
         ],
         { triggerCharacter: '(' }
       );

packages/kbn-esql-validation-autocomplete/src/definitions/generated/aggregation_functions.ts

@@ -216,7 +216,7 @@ const countDefinition: FunctionDefinition = {
   validate: undefined,
   examples: [
     'FROM employees\n| STATS COUNT(height)',
-    'FROM employees \n| STATS count = COUNT(*) BY languages \n| SORT languages DESC',
+    'FROM employees\n| STATS count = COUNT(*) BY languages\n| SORT languages DESC',
     'ROW words="foo;bar;baz;qux;quux;foo"\n| STATS word_count = COUNT(SPLIT(words, ";"))',
     'ROW n=1\n| WHERE n < 0\n| STATS COUNT(n)',
     'ROW n=1\n| STATS COUNT(n > 0 OR NULL), COUNT(n < 0 OR NULL)',
@@ -343,6 +343,61 @@ const countDistinctDefinition: FunctionDefinition = {
       ],
       returnType: 'long',
     },
+    {
+      params: [
+        {
+          name: 'field',
+          type: 'date_nanos',
+          optional: false,
+        },
+      ],
+      returnType: 'long',
+    },
+    {
+      params: [
+        {
+          name: 'field',
+          type: 'date_nanos',
+          optional: false,
+        },
+        {
+          name: 'precision',
+          type: 'integer',
+          optional: true,
+        },
+      ],
+      returnType: 'long',
+    },
+    {
+      params: [
+        {
+          name: 'field',
+          type: 'date_nanos',
+          optional: false,
+        },
+        {
+          name: 'precision',
+          type: 'long',
+          optional: true,
+        },
+      ],
+      returnType: 'long',
+    },
+    {
+      params: [
+        {
+          name: 'field',
+          type: 'date_nanos',
+          optional: false,
+        },
+        {
+          name: 'precision',
+          type: 'unsigned_long',
+          optional: true,
+        },
+      ],
+      returnType: 'long',
+    },
     {
       params: [
         {
@@ -769,6 +824,16 @@ const maxDefinition: FunctionDefinition = {
       ],
       returnType: 'date',
     },
+    {
+      params: [
+        {
+          name: 'field',
+          type: 'date_nanos',
+          optional: false,
+        },
+      ],
+      returnType: 'date_nanos',
+    },
     {
       params: [
         {
@@ -984,6 +1049,16 @@ const minDefinition: FunctionDefinition = {
       ],
       returnType: 'date',
     },
+    {
+      params: [
+        {
+          name: 'field',
+          type: 'date_nanos',
+          optional: false,
+        },
+      ],
+      returnType: 'date_nanos',
+    },
     {
       params: [
         {
@@ -1544,6 +1619,16 @@ const valuesDefinition: FunctionDefinition = {
       ],
       returnType: 'date',
     },
+    {
+      params: [
+        {
+          name: 'field',
+          type: 'date_nanos',
+          optional: false,
+        },
+      ],
+      returnType: 'date_nanos',
+    },
     {
       params: [
         {