From 395203bd0664db648b5207cf2638cf490e795ef7 Mon Sep 17 00:00:00 2001
From: Chris Tsang <chris.2y3@outlook.com>
Date: Thu, 12 Jan 2023 14:09:26 +0800
Subject: [PATCH] Docs

---
 src/entity/column.rs | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/src/entity/column.rs b/src/entity/column.rs
index f014dda3..802ecf8f 100644
--- a/src/entity/column.rs
+++ b/src/entity/column.rs
@@ -342,12 +342,12 @@ pub trait ColumnTrait: IdenStatic + Iterable + FromStr {
     }
 
     /// Cast column expression used in select statement.
-    /// By default it only cast database enum as text.
+    /// It only cast database enum as text if it's an enum column.
     fn select_as(&self, expr: Expr) -> SimpleExpr {
         self.select_enum_as(expr)
     }
 
-    /// Cast enum column as text
+    /// Cast enum column as text; do nothing if `self` is not an enum.
     fn select_enum_as(&self, expr: Expr) -> SimpleExpr {
         cast_enum_as(expr, self, |col, _, col_type| {
             let type_name = match col_type {
@@ -359,12 +359,12 @@ pub trait ColumnTrait: IdenStatic + Iterable + FromStr {
     }
 
     /// Cast value of a column into the correct type for database storage.
-    /// By default it only cast text as enum type if it's an enum column.
+    /// It only cast text as enum type if it's an enum column.
     fn save_as(&self, val: Expr) -> SimpleExpr {
         self.save_enum_as(val)
     }
 
-    /// Cast value of a enum column as enum type
+    /// Cast value of an enum column as enum type; do nothing if `self` is not an enum.
     fn save_enum_as(&self, val: Expr) -> SimpleExpr {
         cast_enum_as(val, self, |col, enum_name, col_type| {
             let type_name = match col_type {