#1696 fix

build-tools/docker-create.sh

@@ -3,7 +3,7 @@
 # Delete all containers
 # $ docker rm -f $(docker ps -a -q)
 # 
-# Delete all volumns
+# Delete all volumes
 # $ docker volume rm $(docker volume ls -q)
 # 
 # Delete all images

src/query/helper.rs

@@ -446,6 +446,57 @@ pub trait QuerySelect: Sized {
         self.query().lock_exclusive();
         self
     }
+
+    /// Add an expression to the select expression list.
+    /// ```
+    /// use sea_orm::QueryTrait;
+    /// use sea_orm::{entity::*, query::QuerySelect, tests_cfg::cake, DbBackend};
+    /// use sea_query::{Alias, Expr};
+    /// let mut find = cake::Entity::find();
+    ///
+    /// assert_eq!(
+    ///     cake::Entity::find()
+    ///         .expr(Expr::col(Alias::new("some_column")))
+    ///         .build(DbBackend::MySql)
+    ///         .to_string(),
+    ///     "SELECT `cake`.`id`, `cake`.`name`, `some_column` FROM `cake`"
+    /// );
+    /// ```
+    fn expr<T>(mut self, expr: T) -> Self
+    where
+        T: Into<SelectExpr>,
+    {
+        self.query().expr(expr);
+        self
+    }
+
+    /// Add select expressions from vector of [`SelectExpr`].
+    /// ```
+    /// use sea_orm::QueryTrait;
+    /// use sea_orm::{entity::*, query::QuerySelect, tests_cfg::cake, DbBackend};
+    /// use sea_query::{Alias, Expr};
+    /// let mut find = cake::Entity::find();
+    ///
+    /// assert_eq!(
+    ///     // new method
+    ///     cake::Entity::find()
+    ///         .exprs([
+    ///             Expr::col(Alias::new("some_column")),
+    ///             Expr::col(Alias::new("some_other_column")),
+    ///         ])
+    ///         .build(DbBackend::MySql)
+    ///         .to_string(),
+    ///     "SELECT `cake`.`id`, `cake`.`name`, `some_column`, `some_other_column` FROM `cake`"
+    /// );
+    /// ```
+    fn exprs<T, I>(mut self, exprs: I) -> Self
+    where
+        T: Into<SelectExpr>,
+        I: IntoIterator<Item = T>,
+    {
+        self.query().exprs(exprs);
+        self
+    }
 }
 
 // LINT: when the column does not appear in tables selected from