diff --git a/src/entity/base.rs b/src/entity/base.rs
index 1c3478c6..6926b753 100644
--- a/src/entity/base.rs
+++ b/src/entity/base.rs
@@ -1,7 +1,7 @@
 use crate::{
     ActiveModelOf, ActiveModelTrait, ColumnTrait, Insert, ModelTrait, OneOrManyActiveModel,
-    PrimaryKeyOfModel, PrimaryKeyTrait, SelectHelper, RelationBuilder, RelationTrait, RelationType,
-    Select,
+    PrimaryKeyOfModel, PrimaryKeyTrait, RelationBuilder, RelationTrait, RelationType, Select,
+    SelectHelper,
 };
 use sea_query::{Iden, IntoValueTuple};
 use std::fmt::Debug;
@@ -120,7 +120,7 @@ pub trait EntityTrait: EntityName {
     fn insert_many<A, I>(models: I) -> Insert<A>
     where
         A: ActiveModelTrait + ActiveModelOf<Self>,
-        I: IntoIterator<Item = A>
+        I: IntoIterator<Item = A>,
     {
         Insert::new().many(models)
     }
@@ -129,7 +129,7 @@ pub trait EntityTrait: EntityName {
 #[cfg(test)]
 mod tests {
     use crate::tests_cfg::cake;
-    use crate::{EntityTrait, Val};
+    use crate::{EntityTrait, QueryTrait, Val};
     use sea_query::PostgresQueryBuilder;
 
     #[test]
diff --git a/src/entity/relation.rs b/src/entity/relation.rs
index 3377cc46..b0c587c3 100644
--- a/src/entity/relation.rs
+++ b/src/entity/relation.rs
@@ -1,4 +1,4 @@
-use crate::{EntityTrait, Identity, IntoIdentity, Iterable, SelectHelper, Select};
+use crate::{EntityTrait, Identity, IntoIdentity, Iterable, Select, SelectHelper};
 use core::marker::PhantomData;
 use sea_query::{Iden, IntoIden, JoinType};
 use std::fmt::Debug;
diff --git a/src/lib.rs b/src/lib.rs
index c11817bc..b44ee556 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -2,7 +2,6 @@ mod connector;
 mod database;
 mod driver;
 pub mod entity;
-mod operation;
 mod query;
 pub mod tests_cfg;
 mod util;
@@ -11,7 +10,6 @@ pub use connector::*;
 pub use database::*;
 pub use driver::*;
 pub use entity::*;
-pub use operation::*;
 pub use query::*;
 
 pub use sea_orm_macros::{
diff --git a/src/query/insert.rs b/src/query/insert.rs
index 9242422e..48208f92 100644
--- a/src/query/insert.rs
+++ b/src/query/insert.rs
@@ -1,6 +1,6 @@
-use crate::{ActiveModelOf, ActiveModelTrait, EntityTrait, Iterable, Statement};
+use crate::{ActiveModelOf, ActiveModelTrait, EntityTrait, Iterable, QueryTrait};
 use core::marker::PhantomData;
-use sea_query::{InsertStatement, IntoIden, QueryBuilder};
+use sea_query::{InsertStatement, IntoIden};
 
 #[derive(Clone, Debug)]
 pub struct Insert<A>
@@ -65,35 +65,31 @@ where
         }
         self
     }
+}
 
-    /// Get a mutable ref to the query builder
-    pub fn query(&mut self) -> &mut InsertStatement {
+impl<A> QueryTrait for Insert<A>
+where
+    A: ActiveModelTrait,
+{
+    type QueryStatementBuilder = InsertStatement;
+
+    fn query(&mut self) -> &mut InsertStatement {
         &mut self.query
     }
 
-    /// Get an immutable ref to the query builder
-    pub fn as_query(&self) -> &InsertStatement {
+    fn as_query(&self) -> &InsertStatement {
         &self.query
     }
 
-    /// Take ownership of the query builder
-    pub fn into_query(self) -> InsertStatement {
+    fn into_query(self) -> InsertStatement {
         self.query
     }
-
-    /// Build the query as [`Statement`]
-    pub fn build<B>(&self, builder: B) -> Statement
-    where
-        B: QueryBuilder,
-    {
-        self.as_query().build(builder).into()
-    }
 }
 
 #[cfg(test)]
 mod tests {
     use crate::tests_cfg::cake;
-    use crate::{Insert, Val};
+    use crate::{Insert, QueryTrait, Val};
     use sea_query::PostgresQueryBuilder;
 
     #[test]
diff --git a/src/query/join.rs b/src/query/join.rs
index 7f841131..cbbc65bc 100644
--- a/src/query/join.rs
+++ b/src/query/join.rs
@@ -1,6 +1,6 @@
 use crate::{
-    ColumnTrait, EntityTrait, Iterable, ModelTrait, PrimaryKeyOfModel, SelectHelper, Related,
-    Select, SelectTwo,
+    ColumnTrait, EntityTrait, Iterable, ModelTrait, PrimaryKeyOfModel, Related, Select,
+    SelectHelper, SelectTwo,
 };
 pub use sea_query::JoinType;
 
diff --git a/src/query/mod.rs b/src/query/mod.rs
index e9657ab9..87e624c7 100644
--- a/src/query/mod.rs
+++ b/src/query/mod.rs
@@ -6,6 +6,7 @@ mod join;
 mod json;
 mod result;
 mod select;
+mod traits;
 
 // pub use combine::*;
 pub use helper::*;
@@ -15,3 +16,4 @@ pub use join::*;
 pub use json::*;
 pub use result::*;
 pub use select::*;
+pub use traits::*;
diff --git a/src/query/traits.rs b/src/query/traits.rs
new file mode 100644
index 00000000..73b00311
--- /dev/null
+++ b/src/query/traits.rs
@@ -0,0 +1,23 @@
+use crate::Statement;
+use sea_query::{QueryBuilder, QueryStatementBuilder};
+
+pub trait QueryTrait {
+    type QueryStatementBuilder: QueryStatementBuilder;
+
+    /// Get a mutable ref to the query builder
+    fn query(&mut self) -> &mut Self::QueryStatementBuilder;
+
+    /// Get an immutable ref to the query builder
+    fn as_query(&self) -> &Self::QueryStatementBuilder;
+
+    /// Take ownership of the query builder
+    fn into_query(self) -> Self::QueryStatementBuilder;
+
+    /// Build the query as [`Statement`]
+    fn build<B>(&self, builder: B) -> Statement
+    where
+        B: QueryBuilder,
+    {
+        self.as_query().build(builder).into()
+    }
+}