feat: Add new none aggregation function to allow fully user defined aggregations in SQL (#1174)

<img width="1956" height="851" alt="image" src="https://github.com/user-attachments/assets/3ca89db9-484b-4e74-88a5-4c31b6a96aef" />

.changeset/great-readers-pretend.md

@@ -0,0 +1,6 @@
+---
+"@hyperdx/common-utils": minor
+"@hyperdx/app": minor
+---
+
+feat: Add new none aggregation function to allow fully user defined aggregations in SQL

packages/app/src/ChartUtils.tsx

@@ -55,6 +55,7 @@ export const AGG_FNS = [
   { value: 'min' as const, label: 'Minimum' },
   { value: 'count_distinct' as const, label: 'Count Distinct' },
   { value: 'any' as const, label: 'Any' },
+  { value: 'none' as const, label: 'None' },
 ];
 
 export const getMetricAggFns = (

packages/app/src/components/DBEditTimeChartForm.tsx

@@ -275,7 +275,12 @@ function ChartSeriesEditorComponent({
           </div>
         )}
         {tableSource?.kind !== SourceKind.Metric && aggFn !== 'count' && (
-          <div style={{ minWidth: 220 }}>
+          <div
+            style={{
+              minWidth: 220,
+              ...(aggFn === 'none' && { width: '100%' }),
+            }}
+          >
             <SQLInlineEditorControlled
               tableConnections={{
                 databaseName,
@@ -289,44 +294,46 @@ function ChartSeriesEditorComponent({
             />
           </div>
         )}
-        <Flex align={'center'} gap={'xs'} className="flex-grow-1">
-          <Text size="sm">Where</Text>
-          {aggConditionLanguage === 'sql' ? (
-            <SQLInlineEditorControlled
-              tableConnections={{
-                databaseName,
-                tableName: tableName ?? '',
-                connectionId: connectionId ?? '',
-              }}
-              control={control}
-              name={`${namePrefix}aggCondition`}
-              placeholder="SQL WHERE clause (ex. column = 'foo')"
-              onLanguageChange={lang =>
-                setValue(`${namePrefix}aggConditionLanguage`, lang)
-              }
-              additionalSuggestions={attributeKeys}
-              language="sql"
-              onSubmit={onSubmit}
-            />
-          ) : (
-            <SearchInputV2
-              tableConnections={{
-                connectionId: connectionId ?? '',
-                databaseName: databaseName ?? '',
-                tableName: tableName ?? '',
-              }}
-              control={control}
-              name={`${namePrefix}aggCondition`}
-              onLanguageChange={lang =>
-                setValue(`${namePrefix}aggConditionLanguage`, lang)
-              }
-              language="lucene"
-              placeholder="Search your events w/ Lucene ex. column:foo"
-              onSubmit={onSubmit}
-              additionalSuggestions={attributeKeys}
-            />
-          )}
-        </Flex>
+        {aggFn !== 'none' && (
+          <Flex align={'center'} gap={'xs'} className="flex-grow-1">
+            <Text size="sm">Where</Text>
+            {aggConditionLanguage === 'sql' ? (
+              <SQLInlineEditorControlled
+                tableConnections={{
+                  databaseName,
+                  tableName: tableName ?? '',
+                  connectionId: connectionId ?? '',
+                }}
+                control={control}
+                name={`${namePrefix}aggCondition`}
+                placeholder="SQL WHERE clause (ex. column = 'foo')"
+                onLanguageChange={lang =>
+                  setValue(`${namePrefix}aggConditionLanguage`, lang)
+                }
+                additionalSuggestions={attributeKeys}
+                language="sql"
+                onSubmit={onSubmit}
+              />
+            ) : (
+              <SearchInputV2
+                tableConnections={{
+                  connectionId: connectionId ?? '',
+                  databaseName: databaseName ?? '',
+                  tableName: tableName ?? '',
+                }}
+                control={control}
+                name={`${namePrefix}aggCondition`}
+                onLanguageChange={lang =>
+                  setValue(`${namePrefix}aggConditionLanguage`, lang)
+                }
+                language="lucene"
+                placeholder="Search your events w/ Lucene ex. column:foo"
+                onSubmit={onSubmit}
+                additionalSuggestions={attributeKeys}
+              />
+            )}
+          </Flex>
+        )}
         {showGroupBy && (
           <Flex align={'center'} gap={'xs'}>
             <Text size="sm" style={{ whiteSpace: 'nowrap' }}>

packages/common-utils/src/renderChartConfig.ts

@@ -272,11 +272,13 @@ const aggFnExpr = ({
   where?: string;
 }) => {
   const isAny = fn === 'any';
+  const isNone = fn === 'none';
   const isCount = fn.startsWith('count');
   const isWhereUsed = isNonEmptyWhereExpr(where);
   // Cast to float64 because the expr might not be a number
   const unsafeExpr = {
-    UNSAFE_RAW_SQL: isAny ? `${expr}` : `toFloat64OrDefault(toString(${expr}))`,
+    UNSAFE_RAW_SQL:
+      isAny || isNone ? `${expr}` : `toFloat64OrDefault(toString(${expr}))`,
   };
   const whereWithExtraNullCheck = `${where} AND ${unsafeExpr.UNSAFE_RAW_SQL} IS NOT NULL`;
 
@@ -307,6 +309,11 @@ const aggFnExpr = ({
     };
   }
 
+  if (fn === 'none') {
+    // Can not use WHERE in none as we can not apply if to a custom aggregation function
+    return chSql`${{ UNSAFE_RAW_SQL: expr ?? '' }}`;
+  }
+
   if (expr != null) {
     if (fn === 'count_distinct') {
       return chSql`count${isWhereUsed ? 'If' : ''}(DISTINCT ${{

packages/common-utils/src/types.ts

@@ -62,6 +62,7 @@ export const AggregateFunctionSchema = z.enum([
   'quantile',
   'sum',
   'any',
+  'none',
 ]);
 export const AggregateFunctionWithCombinatorsSchema = z
   .string()