diff --git a/.idea/prettier.xml b/.idea/prettier.xml
index 727b8b53..005b475f 100644
--- a/.idea/prettier.xml
+++ b/.idea/prettier.xml
@@ -1,7 +1,9 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
   <component name="PrettierConfiguration">
+    <option name="myConfigurationMode" value="MANUAL" />
     <option name="myRunOnSave" value="true" />
     <option name="myRunOnReformat" value="true" />
+    <option name="myFilesPattern" value="{src,test}/**/*.{js,ts,jsx,tsx,vue,astro}" />
   </component>
 </project>
\ No newline at end of file
diff --git a/.idea/watcherTasks.xml b/.idea/watcherTasks.xml
index b80cf2cd..c806ef47 100644
--- a/.idea/watcherTasks.xml
+++ b/.idea/watcherTasks.xml
@@ -47,7 +47,7 @@
       <option name="workingDir" value="$ProjectFileDir$" />
       <envs />
     </TaskOptions>
-    <TaskOptions isEnabled="true">
+    <TaskOptions isEnabled="false">
       <option name="arguments" value="--write $FilePathRelativeToProjectRoot$" />
       <option name="checkSyntaxErrors" value="true" />
       <option name="description" />
diff --git a/src/expressions/notExpression.ts b/src/expressions/notExpression.ts
index 6023751b..b4cd9fd3 100644
--- a/src/expressions/notExpression.ts
+++ b/src/expressions/notExpression.ts
@@ -37,7 +37,7 @@ export class NotExpression extends ChainableExpression {
   }
 
   protected _getSQLChainableHelper(dialect: SQLDialect, operandSQL: string): string {
-    return `NOT(${operandSQL})`;
+    return `(${operandSQL}) IS NOT TRUE`;
   }
 
   protected specialSimplify(): Expression {
diff --git a/test/functional/druidSqlFunctional.mocha.js b/test/functional/druidSqlFunctional.mocha.js
index 86133c87..ab427ac5 100644
--- a/test/functional/druidSqlFunctional.mocha.js
+++ b/test/functional/druidSqlFunctional.mocha.js
@@ -366,6 +366,45 @@ describe('DruidSQL Functional', function () {
       });
     });
 
+    it('works with negation', () => {
+      const ex = $('wiki')
+        .filter($('cityName').isnt('Tokyo'))
+        .split($('cityName'), 'City')
+        .apply('Count', $('wiki').sum('$count'))
+        .sort('$Count', 'descending')
+        .limit(3);
+
+      return basicExecutor(ex).then(result => {
+        expect(result.toJS()).to.deep.equal({
+          attributes: [
+            {
+              name: 'City',
+              type: 'STRING',
+            },
+            {
+              name: 'Count',
+              type: 'NUMBER',
+            },
+          ],
+          data: [
+            {
+              City: null,
+              Count: 371151,
+            },
+            {
+              City: 'Central District',
+              Count: 425,
+            },
+            {
+              City: 'Moscow',
+              Count: 330,
+            },
+          ],
+          keys: ['City'],
+        });
+      });
+    });
+
     it('can do compare column', () => {
       const prevRange = TimeRange.fromJS({
         start: new Date('2015-09-12T00:00:00Z'),
diff --git a/test/functional/mySqlFunctional.mocha.js b/test/functional/mySqlFunctional.mocha.js
index d136e5cb..13c3ed4b 100644
--- a/test/functional/mySqlFunctional.mocha.js
+++ b/test/functional/mySqlFunctional.mocha.js
@@ -385,6 +385,45 @@ describe('MySQL Functional', function () {
       });
     });
 
+    it('works with negation', () => {
+      const ex = $('wiki')
+        .filter($('cityName').isnt('Tokyo'))
+        .split($('cityName'), 'City')
+        .apply('Count', $('wiki').sum('$count'))
+        .sort('$Count', 'descending')
+        .limit(3);
+
+      return basicExecutor(ex).then(result => {
+        expect(result.toJS()).to.deep.equal({
+          attributes: [
+            {
+              name: 'City',
+              type: 'STRING',
+            },
+            {
+              name: 'Count',
+              type: 'NUMBER',
+            },
+          ],
+          data: [
+            {
+              City: null,
+              Count: 371151,
+            },
+            {
+              City: 'Central District',
+              Count: 425,
+            },
+            {
+              City: 'Moscow',
+              Count: 330,
+            },
+          ],
+          keys: ['City'],
+        });
+      });
+    });
+
     it('works with boolean GROUP BYs', () => {
       const ex = $('wiki')
         .split($('channel').is('en'), 'ChannelIsEn')
diff --git a/test/info.js b/test/info.js
index 12862a5c..b73ec566 100644
--- a/test/info.js
+++ b/test/info.js
@@ -22,7 +22,7 @@ exports.druidContext = {
   populateCache: false,
 };
 
-exports.mySqlVersion = '5.7.29';
+exports.mySqlVersion = '5.7.41';
 exports.mySqlHost = `localhost:3306`;
 exports.mySqlDatabase = 'datazoo';
 exports.mySqlUser = 'datazoo';
diff --git a/test/simulate/simulateDruidSql.mocha.js b/test/simulate/simulateDruidSql.mocha.js
index db292bff..0700045c 100644
--- a/test/simulate/simulateDruidSql.mocha.js
+++ b/test/simulate/simulateDruidSql.mocha.js
@@ -223,7 +223,7 @@ describe('simulate DruidSql', () => {
             sqlTimeZone: 'Etc/UTC',
           },
           query:
-            'SELECT\n"tags" AS "Tag"\nFROM "dia.monds" AS t\nWHERE (NOT((("pugs" IS NULL) OR "pugs" IN (\'pugA\',\'pugB\',\'null\'))) AND (("tags" IS NULL) OR "tags" IN (\'tagA\',\'tagB\',\'null\')))\nGROUP BY 1',
+            'SELECT\n"tags" AS "Tag"\nFROM "dia.monds" AS t\nWHERE (((("pugs" IS NULL) OR "pugs" IN (\'pugA\',\'pugB\',\'null\'))) IS NOT TRUE AND (("tags" IS NULL) OR "tags" IN (\'tagA\',\'tagB\',\'null\')))\nGROUP BY 1',
         },
       ],
     ]);
@@ -256,7 +256,7 @@ describe('simulate DruidSql', () => {
             sqlTimeZone: 'Etc/UTC',
           },
           query:
-            'SELECT\n"tags" AS "Tag"\nFROM "dia.monds" AS t\nWHERE (NOT((("pugs" IS NULL) OR "pugs" IN (\'pugA\',\'pugB\',\'\'))) AND (("tags" IS NULL) OR "tags" IN (\'tagA\',\'tagB\',\'null\',\'\')))\nGROUP BY 1',
+            'SELECT\n"tags" AS "Tag"\nFROM "dia.monds" AS t\nWHERE (((("pugs" IS NULL) OR "pugs" IN (\'pugA\',\'pugB\',\'\'))) IS NOT TRUE AND (("tags" IS NULL) OR "tags" IN (\'tagA\',\'tagB\',\'null\',\'\')))\nGROUP BY 1',
         },
       ],
     ]);