diff --git a/psl/psl-core/src/common/preview_features.rs b/psl/psl-core/src/common/preview_features.rs
index 544bf5b99164..ca9da322933d 100644
--- a/psl/psl-core/src/common/preview_features.rs
+++ b/psl/psl-core/src/common/preview_features.rs
@@ -43,6 +43,7 @@ features!(
     ConnectOrCreate,
     CreateMany,
     DataProxy,
+    DistinctOn,
     Deno,
     Distinct,
     DriverAdapters,
@@ -82,6 +83,7 @@ features!(
 pub const ALL_PREVIEW_FEATURES: FeatureMap = FeatureMap {
     active: enumflags2::make_bitflags!(PreviewFeature::{
         Deno
+         | DistinctOn
          | DriverAdapters
          | FullTextIndex
          | FullTextSearch
diff --git a/query-engine/connector-test-kit-rs/query-engine-tests/tests/queries/distinct.rs b/query-engine/connector-test-kit-rs/query-engine-tests/tests/queries/distinct.rs
index fec9ac8ba8e3..d1002323f0e3 100644
--- a/query-engine/connector-test-kit-rs/query-engine-tests/tests/queries/distinct.rs
+++ b/query-engine/connector-test-kit-rs/query-engine-tests/tests/queries/distinct.rs
@@ -34,7 +34,7 @@ mod distinct {
     }
 
     /// Regression test for not selecting the fields the distinct is performed on: https://github.com/prisma/prisma/issues/5969
-    #[connector_test(exclude(CockroachDb, MongoDb, SqlServer, MySQL, Sqlite))]
+    #[connector_test(only(Postgres))]
     async fn no_panic_pg(runner: Runner) -> TestResult<()> {
         test_user(&runner, r#"{ id: 1, first_name: "Joe", last_name: "Doe", email: "1" }"#).await?;
         test_user(&runner, r#"{ id: 2, first_name: "Doe", last_name: "Joe", email: "2" }"#).await?;
@@ -55,7 +55,7 @@ mod distinct {
 
     /// Regression test for not selecting the fields the distinct is performed on: https://github.com/prisma/prisma/issues/5969
     #[connector_test(exclude(Postgres))]
-    async fn no_panic_mem(runner: Runner) -> TestResult<()> {
+    async fn no_panic_other(runner: Runner) -> TestResult<()> {
         test_user(&runner, r#"{ id: 1, first_name: "Joe", last_name: "Doe", email: "1" }"#).await?;
         test_user(&runner, r#"{ id: 2, first_name: "Doe", last_name: "Joe", email: "2" }"#).await?;
 
@@ -92,7 +92,7 @@ mod distinct {
         Ok(())
     }
 
-    #[connector_test(exclude(Postgres))]
+    #[connector_test(only(Postgres))]
     async fn with_duplicates_pg(runner: Runner) -> TestResult<()> {
         test_user(&runner, r#"{ id: 1, first_name: "Joe", last_name: "Doe", email: "1" }"#).await?;
         test_user(
@@ -109,14 +109,14 @@ mod distinct {
                     { id, first_name, last_name }
                 }")
             ),
-            @r###"{"data":{"findManyUser":[{"id":1,"first_name":"Joe","last_name":"Doe"},{"id":2,"first_name":"Hans","last_name":"Wurst"}]}}"###
+            @r###"{"data":{"findManyUser":[{"id":2,"first_name":"Hans","last_name":"Wurst"},{"id":1,"first_name":"Joe","last_name":"Doe"}]}}"###
         );
 
         Ok(())
     }
 
-    #[connector_test(exclude(CockroachDb, MongoDb, SqlServer, MySQL, Sqlite))]
-    async fn with_duplicates_mem(runner: Runner) -> TestResult<()> {
+    #[connector_test(exclude(Postgres))]
+    async fn with_duplicates_other(runner: Runner) -> TestResult<()> {
         test_user(&runner, r#"{ id: 1, first_name: "Joe", last_name: "Doe", email: "1" }"#).await?;
         test_user(
             &runner,
@@ -132,7 +132,7 @@ mod distinct {
                     { id, first_name, last_name }
                 }")
             ),
-            @r###"{"data":{"findManyUser":[{"id":2,"first_name":"Hans","last_name":"Wurst"},{"id":1,"first_name":"Joe","last_name":"Doe"}]}}"###
+            @r###"{"data":{"findManyUser":[{"id":1,"first_name":"Joe","last_name":"Doe"},{"id":2,"first_name":"Hans","last_name":"Wurst"}]}}"###
         );
 
         Ok(())
@@ -215,7 +215,7 @@ mod distinct {
     }
 
     /// Mut return only distinct records for top record, and only for those the distinct relation records.
-    #[connector_test(exclude(CockroachDb, MongoDb, SqlServer, MySQL, Sqlite))]
+    #[connector_test(only(Postgres))]
     async fn nested_distinct_pg(runner: Runner) -> TestResult<()> {
         nested_dataset(&runner).await?;
 
@@ -242,7 +242,7 @@ mod distinct {
     }
 
     #[connector_test(exclude(Postgres))]
-    async fn nested_distinct_mem(runner: Runner) -> TestResult<()> {
+    async fn nested_distinct_other(runner: Runner) -> TestResult<()> {
         nested_dataset(&runner).await?;
 
         // Returns Users 1, 3, 4, 5 top
diff --git a/query-engine/query-structure/src/query_arguments.rs b/query-engine/query-structure/src/query_arguments.rs
index 4e62c232f7b0..9553cc089e83 100644
--- a/query-engine/query-structure/src/query_arguments.rs
+++ b/query-engine/query-structure/src/query_arguments.rs
@@ -1,4 +1,4 @@
-use psl::datamodel_connector::ConnectorCapability;
+use psl::{datamodel_connector::ConnectorCapability, PreviewFeature};
 
 use crate::*;
 
@@ -76,7 +76,17 @@ impl QueryArguments {
     }
 
     pub fn requires_inmemory_distinct(&self) -> bool {
-        self.has_distinct() && (!self.has_distinct_capability() || self.has_orderby())
+        self.has_distinct()
+            && ((!self.has_distinct_capability() && !self.has_distincton_preview()) || self.has_orderby())
+    }
+
+    fn has_distincton_preview(&self) -> bool {
+        self.model()
+            .dm
+            .schema
+            .configuration
+            .preview_features()
+            .contains(PreviewFeature::DistinctOn)
     }
 
     fn has_distinct_capability(&self) -> bool {