From 9db7a2fa2f7bc963fbbebe2a6784c82904afd2ac Mon Sep 17 00:00:00 2001
From: Huliiiii <134658521+Huliiiiii@users.noreply.github.com>
Date: Mon, 1 Sep 2025 09:04:11 +0800
Subject: [PATCH 1/3] Add pseudo tables

---
 src/backend/query_builder.rs | 13 +++++++++++++
 src/types/iden/compound.rs   | 11 +++++++++++
 2 files changed, 24 insertions(+)

diff --git a/src/backend/query_builder.rs b/src/backend/query_builder.rs
index b91cfb1b4..6f6dd7ba9 100644
--- a/src/backend/query_builder.rs
+++ b/src/backend/query_builder.rs
@@ -657,6 +657,19 @@ pub trait QueryBuilder:
                 }
                 sql.write_str("*").unwrap();
             }
+            ColumnRef::New(column) => {
+                sql.write_str("NEW.").unwrap();
+                self.prepare_iden(column, sql);
+            }
+            ColumnRef::Old(column) => {
+                sql.write_str("OLD.").unwrap();
+                self.prepare_iden(column, sql);
+            }
+            #[cfg(feature = "backend-postgres")]
+            ColumnRef::Excluded(column) => {
+                sql.write_str("excluded.").unwrap();
+                self.prepare_iden(column, sql);
+            }
         }
     }
 
diff --git a/src/types/iden/compound.rs b/src/types/iden/compound.rs
index 7a49edb7b..81962b6fe 100644
--- a/src/types/iden/compound.rs
+++ b/src/types/iden/compound.rs
@@ -135,6 +135,13 @@ pub enum ColumnRef {
     Column(ColumnName),
     /// An `*` expression, potentially qualified as `(database.)(schema.)(table.)*`.
     Asterisk(Option<TableName>),
+    /// NEW.*
+    New(DynIden),
+    /// Old.*
+    Old(DynIden),
+    #[cfg(feature = "backend-postgres")]
+    /// excluded.*
+    Excluded(DynIden),
 }
 
 impl ColumnRef {
@@ -144,6 +151,10 @@ impl ColumnRef {
         match self {
             ColumnRef::Column(ColumnName(_table_ref, column_itself)) => Some(column_itself),
             ColumnRef::Asterisk(..) => None,
+            ColumnRef::New(column_itself) => Some(column_itself),
+            ColumnRef::Old(column_itself) => Some(column_itself),
+            #[cfg(feature = "backend-postgres")]
+            ColumnRef::Excluded(column_itself) => Some(column_itself),
         }
     }
 }

From 7247472cf6eaf4accd2a79362c774ea4036b271f Mon Sep 17 00:00:00 2001
From: Huliiiii <134658521+Huliiiiii@users.noreply.github.com>
Date: Tue, 2 Sep 2025 16:54:07 +0800
Subject: [PATCH 2/3] Tweak

---
 src/types/iden/compound.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/types/iden/compound.rs b/src/types/iden/compound.rs
index 81962b6fe..f7c6fdd3d 100644
--- a/src/types/iden/compound.rs
+++ b/src/types/iden/compound.rs
@@ -137,7 +137,7 @@ pub enum ColumnRef {
     Asterisk(Option<TableName>),
     /// NEW.*
     New(DynIden),
-    /// Old.*
+    /// OLD.*
     Old(DynIden),
     #[cfg(feature = "backend-postgres")]
     /// excluded.*

From 094115529ebaf037e8e315681e1ffc181db23279 Mon Sep 17 00:00:00 2001
From: Huliiiii <134658521+Huliiiiii@users.noreply.github.com>
Date: Tue, 2 Sep 2025 17:21:53 +0800
Subject: [PATCH 3/3] Fix

---
 src/types/iden/compound.rs | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/types/iden/compound.rs b/src/types/iden/compound.rs
index f7c6fdd3d..999346545 100644
--- a/src/types/iden/compound.rs
+++ b/src/types/iden/compound.rs
@@ -135,12 +135,12 @@ pub enum ColumnRef {
     Column(ColumnName),
     /// An `*` expression, potentially qualified as `(database.)(schema.)(table.)*`.
     Asterisk(Option<TableName>),
-    /// NEW.*
+    /// NEW.<column_name>
     New(DynIden),
-    /// OLD.*
+    /// OLD.<column_name>
     Old(DynIden),
     #[cfg(feature = "backend-postgres")]
-    /// excluded.*
+    /// excluded.<column_name>
     Excluded(DynIden),
 }