diff --git a/src/database/mock.rs b/src/database/mock.rs
index 207abd7f..da12e858 100644
--- a/src/database/mock.rs
+++ b/src/database/mock.rs
@@ -203,7 +203,7 @@ impl MockDatabaseTrait for MockDatabase {
 }
 
 impl MockRow {
-    /// Try to get the values of a [MockRow] and fail gracefully on error
+    /// Get a value from the [MockRow]
     pub fn try_get<T>(&self, col: &str) -> Result<T, DbErr>
     where
         T: ValueType,
@@ -211,6 +211,7 @@ impl MockRow {
         T::try_from(self.values.get(col).unwrap().clone()).map_err(|e| DbErr::Type(e.to_string()))
     }
 
+    /// Get a value from the [MockRow] based on the order of column name
     pub fn try_get_by_index<T>(&self, idx: usize) -> Result<T, DbErr>
     where
         T: ValueType,
diff --git a/src/executor/query.rs b/src/executor/query.rs
index fb9cec06..5806d203 100644
--- a/src/executor/query.rs
+++ b/src/executor/query.rs
@@ -53,7 +53,7 @@ impl From<TryGetError> for DbErr {
 // QueryResult //
 
 impl QueryResult {
-    /// Get a Row from a Column
+    /// Get a value from the query result with prefixed column name
     pub fn try_get<T>(&self, pre: &str, col: &str) -> Result<T, DbErr>
     where
         T: TryGetable,
@@ -61,6 +61,7 @@ impl QueryResult {
         Ok(T::try_get(self, pre, col)?)
     }
 
+    /// Get a value from the query result based on the order in the select expressions
     pub fn try_get_by_index<T>(&self, idx: usize) -> Result<T, DbErr>
     where
         T: TryGetable,
@@ -68,7 +69,7 @@ impl QueryResult {
         Ok(T::try_get_by_index(self, idx)?)
     }
 
-    /// Perform query operations on multiple Columns
+    /// Get a tuple value from the query result with prefixed column name
     pub fn try_get_many<T>(&self, pre: &str, cols: &[String]) -> Result<T, DbErr>
     where
         T: TryGetableMany,
@@ -76,6 +77,7 @@ impl QueryResult {
         Ok(T::try_get_many(self, pre, cols)?)
     }
 
+    /// Get a tuple value from the query result based on the order in the select expressions
     pub fn try_get_many_by_index<T>(&self) -> Result<T, DbErr>
     where
         T: TryGetableMany,
@@ -1175,13 +1177,13 @@ fn try_get_many_with_slice_len_of(len: usize, cols: &[String]) -> Result<(), Try
 
 // TryGetableFromJson //
 
-/// Perform a query on multiple columns
+/// An interface to get a JSON from the query result
 #[cfg(feature = "with-json")]
 pub trait TryGetableFromJson: Sized
 where
     for<'de> Self: serde::Deserialize<'de>,
 {
-    /// Ensure the type implements this method
+    /// Get a JSON from the query result with prefixed column name
     #[allow(unused_variables, unreachable_code)]
     fn try_get_from_json(res: &QueryResult, pre: &str, col: &str) -> Result<Self, TryGetError> {
         let column = format!("{}{}", pre, col);
@@ -1223,6 +1225,7 @@ where
         }
     }
 
+    /// Get a JSON from the query result based on the order in the select expressions
     fn try_get_from_json_by_index(res: &QueryResult, idx: usize) -> Result<Self, TryGetError> {
         match &res.row {
             #[cfg(feature = "sqlx-mysql")]
diff --git a/src/executor/select.rs b/src/executor/select.rs
index df24e938..bcb5cb22 100644
--- a/src/executor/select.rs
+++ b/src/executor/select.rs
@@ -41,7 +41,7 @@ pub trait SelectorTrait {
     fn from_raw_query_result(res: QueryResult) -> Result<Self::Item, DbErr>;
 }
 
-/// Perform an operation on an entity that can yield a Value
+/// Get tuple from query result based on a list of column identifiers
 #[derive(Debug)]
 pub struct SelectGetableValue<T, C>
 where
@@ -52,6 +52,7 @@ where
     model: PhantomData<T>,
 }
 
+/// Get tuple from query result based on column index
 #[derive(Debug)]
 pub struct SelectGetableTuple<T>
 where
@@ -535,6 +536,7 @@ where
         }
     }
 
+    /// Get tuple from query result based on column index
     pub fn into_tuple<T>(query: SelectStatement) -> Selector<SelectGetableTuple<T>>
     where
         T: TryGetableMany,