diff --git a/.cargo/config.toml b/.cargo/config.toml
index c91c3f3..4714cce 100644
--- a/.cargo/config.toml
+++ b/.cargo/config.toml
@@ -1,2 +1,5 @@
+[build]
+rustflags = ["--cfg", "surrealdb_unstable"]
+
 [net]
 git-fetch-with-cli = true
diff --git a/Cargo.toml b/Cargo.toml
index 29d89dd..c9d773b 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -30,7 +30,7 @@ rust-ini = "0.20.0"
 serde = { version = "1.0.197", features = ["derive"] }
 serde_json = "1.0.114"
 sqlparser = "0.43.1"
-surrealdb = { version = "1.2.0", features = ["protocol-http"] }
+surrealdb = { version = "1.2.0", features = ["protocol-http", "sql2"] }
 tokio = { version = "1.36.0", features = ["macros"] }
 
 [dev-dependencies]
diff --git a/templates/blog/events/publish_post.surql b/templates/blog/events/publish_post.surql
index dccbe34..aac6610 100644
--- a/templates/blog/events/publish_post.surql
+++ b/templates/blog/events/publish_post.surql
@@ -4,7 +4,7 @@ DEFINE TABLE publish_post SCHEMALESS
         FOR update, delete NONE;
 
 DEFINE FIELD post_id ON publish_post TYPE record<post>;
-DEFINE FIELD created_at ON publish_post TYPE datetime DEFAULT time::now();
+DEFINE FIELD created_at ON publish_post TYPE datetime VALUE time::now() READONLY;
 
 DEFINE EVENT publish_post ON TABLE publish_post WHEN $event == "CREATE" THEN (
     UPDATE post SET status = "PUBLISHED" WHERE id = $after.post_id
diff --git a/templates/blog/events/unpublish_post.surql b/templates/blog/events/unpublish_post.surql
index 3a37ed9..180253e 100644
--- a/templates/blog/events/unpublish_post.surql
+++ b/templates/blog/events/unpublish_post.surql
@@ -4,7 +4,7 @@ DEFINE TABLE unpublish_post SCHEMALESS
         FOR update, delete NONE;
 
 DEFINE FIELD post_id ON unpublish_post TYPE record<post>;
-DEFINE FIELD created_at ON unpublish_post TYPE datetime DEFAULT time::now();
+DEFINE FIELD created_at ON unpublish_post TYPE datetime VALUE time::now() READONLY;
 
 DEFINE EVENT unpublish_post ON TABLE unpublish_post WHEN $event == "CREATE" THEN (
     UPDATE post SET status = "DRAFT" WHERE id = $after.post_id
diff --git a/templates/blog/schemas/comment.surql b/templates/blog/schemas/comment.surql
index c28d778..7634ab7 100644
--- a/templates/blog/schemas/comment.surql
+++ b/templates/blog/schemas/comment.surql
@@ -7,4 +7,4 @@ DEFINE TABLE comment SCHEMALESS
         FOR update, delete WHERE in = $auth.id;
 
 DEFINE FIELD content ON comment TYPE string;
-DEFINE FIELD created_at ON comment TYPE datetime DEFAULT time::now();
\ No newline at end of file
+DEFINE FIELD created_at ON comment TYPE datetime VALUE time::now() READONLY;
\ No newline at end of file
diff --git a/templates/blog/schemas/permission.surql b/templates/blog/schemas/permission.surql
index 108d124..36c52e0 100644
--- a/templates/blog/schemas/permission.surql
+++ b/templates/blog/schemas/permission.surql
@@ -4,6 +4,6 @@ DEFINE TABLE permission SCHEMAFULL
         FOR create, update, delete NONE;
 
 DEFINE FIELD name ON permission TYPE string;
-DEFINE FIELD created_at ON permission TYPE datetime DEFAULT time::now();
+DEFINE FIELD created_at ON permission TYPE datetime VALUE time::now() READONLY;
 
 DEFINE INDEX unique_name ON permission COLUMNS name UNIQUE;
\ No newline at end of file
diff --git a/templates/blog/schemas/post.surql b/templates/blog/schemas/post.surql
index 7d9fe76..48e3c70 100644
--- a/templates/blog/schemas/post.surql
+++ b/templates/blog/schemas/post.surql
@@ -7,5 +7,5 @@ DEFINE TABLE post SCHEMALESS
 DEFINE FIELD title ON post TYPE string;
 DEFINE FIELD content ON post TYPE string;
 DEFINE FIELD author ON post TYPE record<user>;
-DEFINE FIELD created_at ON post TYPE datetime DEFAULT time::now();
+DEFINE FIELD created_at ON post TYPE datetime VALUE time::now() READONLY;
 DEFINE FIELD status ON post TYPE string DEFAULT 'DRAFT' ASSERT $value IN ['DRAFT', 'PUBLISHED'];
\ No newline at end of file
diff --git a/templates/blog/schemas/script_migration.surql b/templates/blog/schemas/script_migration.surql
index 90eb7a2..65e455b 100644
--- a/templates/blog/schemas/script_migration.surql
+++ b/templates/blog/schemas/script_migration.surql
@@ -4,4 +4,4 @@ DEFINE TABLE script_migration SCHEMAFULL
         FOR create, update, delete NONE;
 
 DEFINE FIELD script_name ON script_migration TYPE string;
-DEFINE FIELD executed_at ON script_migration TYPE datetime DEFAULT time::now();
\ No newline at end of file
+DEFINE FIELD executed_at ON script_migration TYPE datetime VALUE time::now() READONLY;
\ No newline at end of file
diff --git a/templates/blog/schemas/user.surql b/templates/blog/schemas/user.surql
index 79fbed5..c986fec 100644
--- a/templates/blog/schemas/user.surql
+++ b/templates/blog/schemas/user.surql
@@ -7,7 +7,7 @@ DEFINE TABLE user SCHEMAFULL
 DEFINE FIELD username ON user TYPE string;
 DEFINE FIELD email ON user TYPE string ASSERT string::is::email($value);
 DEFINE FIELD password ON user TYPE string;
-DEFINE FIELD registered_at ON user TYPE datetime DEFAULT time::now();
+DEFINE FIELD registered_at ON user TYPE datetime VALUE time::now() READONLY;
 DEFINE FIELD avatar ON user TYPE option<string>;
 
 DEFINE FIELD permissions ON user TYPE array<record<permission>> 
diff --git a/templates/ecommerce/schemas/customer.surql b/templates/ecommerce/schemas/customer.surql
index 275b8bb..6091ad5 100644
--- a/templates/ecommerce/schemas/customer.surql
+++ b/templates/ecommerce/schemas/customer.surql
@@ -5,7 +5,7 @@ DEFINE TABLE customer SCHEMALESS
         FOR create, delete NONE;
 
 DEFINE FIELD name ON customer TYPE string;
-DEFINE FIELD email ON customer TYPE string;
+DEFINE FIELD email ON customer TYPE string ASSERT string::is::email($value);
 DEFINE FIELD password ON customer TYPE string;
 DEFINE FIELD addresses ON customer TYPE array<record<address>>;
 
diff --git a/templates/ecommerce/schemas/purchases.surql b/templates/ecommerce/schemas/purchases.surql
index ee83e69..e98ec2f 100644
--- a/templates/ecommerce/schemas/purchases.surql
+++ b/templates/ecommerce/schemas/purchases.surql
@@ -7,7 +7,7 @@ DEFINE TABLE purchases SCHEMALESS
 
 DEFINE FIELD quantity ON purchases TYPE number;
 DEFINE FIELD shipping_address ON purchases TYPE option<record<address>>;
-DEFINE FIELD created_at ON purchases TYPE datetime DEFAULT time::now();
+DEFINE FIELD created_at ON purchases TYPE datetime VALUE time::now() READONLY;
 DEFINE FIELD shipped_at ON purchases TYPE option<datetime>;
 DEFINE FIELD total ON purchases TYPE number;
 DEFINE FIELD status ON purchases TYPE string DEFAULT 'Pending' ASSERT $value IN ['Pending', 'Delivered'];
\ No newline at end of file
diff --git a/templates/ecommerce/schemas/script_migration.surql b/templates/ecommerce/schemas/script_migration.surql
index 90eb7a2..65e455b 100644
--- a/templates/ecommerce/schemas/script_migration.surql
+++ b/templates/ecommerce/schemas/script_migration.surql
@@ -4,4 +4,4 @@ DEFINE TABLE script_migration SCHEMAFULL
         FOR create, update, delete NONE;
 
 DEFINE FIELD script_name ON script_migration TYPE string;
-DEFINE FIELD executed_at ON script_migration TYPE datetime DEFAULT time::now();
\ No newline at end of file
+DEFINE FIELD executed_at ON script_migration TYPE datetime VALUE time::now() READONLY;
\ No newline at end of file
diff --git a/templates/empty/schemas/script_migration.surql b/templates/empty/schemas/script_migration.surql
index 90eb7a2..65e455b 100644
--- a/templates/empty/schemas/script_migration.surql
+++ b/templates/empty/schemas/script_migration.surql
@@ -4,4 +4,4 @@ DEFINE TABLE script_migration SCHEMAFULL
         FOR create, update, delete NONE;
 
 DEFINE FIELD script_name ON script_migration TYPE string;
-DEFINE FIELD executed_at ON script_migration TYPE datetime DEFAULT time::now();
\ No newline at end of file
+DEFINE FIELD executed_at ON script_migration TYPE datetime VALUE time::now() READONLY;
\ No newline at end of file
diff --git a/tests/cli/apply/e2e.rs b/tests/cli/apply/e2e.rs
index 82d0863..1244196 100644
--- a/tests/cli/apply/e2e.rs
+++ b/tests/cli/apply/e2e.rs
@@ -637,14 +637,14 @@ DEFINE TABLE comment SCHEMALESS
         FOR update, delete WHERE in = $auth.id;
 
 DEFINE FIELD content ON comment TYPE string;
-DEFINE FIELD created_at ON comment TYPE datetime DEFAULT time::now();
+DEFINE FIELD created_at ON comment TYPE datetime VALUE time::now() READONLY;
 DEFINE TABLE permission SCHEMAFULL
     PERMISSIONS
         FOR select FULL
         FOR create, update, delete NONE;
 
 DEFINE FIELD name ON permission TYPE string;
-DEFINE FIELD created_at ON permission TYPE datetime DEFAULT time::now();
+DEFINE FIELD created_at ON permission TYPE datetime VALUE time::now() READONLY;
 
 DEFINE INDEX unique_name ON permission COLUMNS name UNIQUE;
 DEFINE TABLE post SCHEMALESS
@@ -656,7 +656,7 @@ DEFINE TABLE post SCHEMALESS
 DEFINE FIELD title ON post TYPE string;
 DEFINE FIELD content ON post TYPE string;
 DEFINE FIELD author ON post TYPE record<user>;
-DEFINE FIELD created_at ON post TYPE datetime DEFAULT time::now();
+DEFINE FIELD created_at ON post TYPE datetime VALUE time::now() READONLY;
 DEFINE FIELD status ON post TYPE string DEFAULT 'DRAFT' ASSERT $value IN ['DRAFT', 'PUBLISHED'];
 DEFINE TABLE script_migration SCHEMAFULL
     PERMISSIONS
@@ -664,7 +664,7 @@ DEFINE TABLE script_migration SCHEMAFULL
         FOR create, update, delete NONE;
 
 DEFINE FIELD script_name ON script_migration TYPE string;
-DEFINE FIELD executed_at ON script_migration TYPE datetime DEFAULT time::now();
+DEFINE FIELD executed_at ON script_migration TYPE datetime VALUE time::now() READONLY;
 DEFINE TABLE user SCHEMAFULL
     PERMISSIONS
         FOR select FULL
@@ -674,7 +674,7 @@ DEFINE TABLE user SCHEMAFULL
 DEFINE FIELD username ON user TYPE string;
 DEFINE FIELD email ON user TYPE string ASSERT string::is::email($value);
 DEFINE FIELD password ON user TYPE string;
-DEFINE FIELD registered_at ON user TYPE datetime DEFAULT time::now();
+DEFINE FIELD registered_at ON user TYPE datetime VALUE time::now() READONLY;
 DEFINE FIELD avatar ON user TYPE option<string>;
 
 DEFINE FIELD permissions ON user TYPE array<record<permission>> 
@@ -705,7 +705,7 @@ const INITIAL_DEFINITION_EVENTS: &str = "DEFINE TABLE publish_post SCHEMALESS
         FOR update, delete NONE;
 
 DEFINE FIELD post_id ON publish_post TYPE record<post>;
-DEFINE FIELD created_at ON publish_post TYPE datetime DEFAULT time::now();
+DEFINE FIELD created_at ON publish_post TYPE datetime VALUE time::now() READONLY;
 
 DEFINE EVENT publish_post ON TABLE publish_post WHEN $event == \"CREATE\" THEN (
     UPDATE post SET status = \"PUBLISHED\" WHERE id = $after.post_id
@@ -716,7 +716,7 @@ DEFINE TABLE unpublish_post SCHEMALESS
         FOR update, delete NONE;
 
 DEFINE FIELD post_id ON unpublish_post TYPE record<post>;
-DEFINE FIELD created_at ON unpublish_post TYPE datetime DEFAULT time::now();
+DEFINE FIELD created_at ON unpublish_post TYPE datetime VALUE time::now() READONLY;
 
 DEFINE EVENT unpublish_post ON TABLE unpublish_post WHEN $event == \"CREATE\" THEN (
     UPDATE post SET status = \"DRAFT\" WHERE id = $after.post_id
@@ -728,7 +728,7 @@ const SECOND_MIGRATION_SCHEMAS: &str = "--- original
 +DEFINE TABLE category SCHEMALESS;
 +
 +DEFINE FIELD name ON category TYPE string;
-+DEFINE FIELD created_at ON category TYPE datetime DEFAULT time::now();
++DEFINE FIELD created_at ON category TYPE datetime VALUE time::now() READONLY;
  # in: user
  # out: post, comment
  DEFINE TABLE comment SCHEMALESS\n";
@@ -741,7 +741,7 @@ const THIRD_MIGRATION_SCHEMAS: &str = "--- original
 +DEFINE FIELD name ON archive TYPE string;
 +DEFINE FIELD from_date ON archive TYPE datetime;
 +DEFINE FIELD to_date ON archive TYPE datetime;
-+DEFINE FIELD created_at ON archive TYPE datetime DEFAULT time::now();
++DEFINE FIELD created_at ON archive TYPE datetime VALUE time::now() READONLY;
  DEFINE TABLE category SCHEMALESS;
 
  DEFINE FIELD name ON category TYPE string;\n";
diff --git a/tests/cli/branch/diff.rs b/tests/cli/branch/diff.rs
index 6e7ab8b..8df262a 100644
--- a/tests/cli/branch/diff.rs
+++ b/tests/cli/branch/diff.rs
@@ -61,7 +61,7 @@ async fn diff_with_changes() -> Result<()> {
 ## category ##
 
 DEFINE TABLE category SCHEMALESS PERMISSIONS NONE
-DEFINE FIELD created_at ON category TYPE datetime DEFAULT time::now() PERMISSIONS FULL
+DEFINE FIELD created_at ON category TYPE datetime READONLY VALUE time::now() PERMISSIONS FULL
 DEFINE FIELD name ON category TYPE string PERMISSIONS FULL\n",
         )
     })?;
diff --git a/tests/cli/definitions.rs b/tests/cli/definitions.rs
index 24f9acf..8c859f7 100644
--- a/tests/cli/definitions.rs
+++ b/tests/cli/definitions.rs
@@ -187,14 +187,14 @@ DEFINE TABLE comment SCHEMALESS
         FOR update, delete WHERE in = $auth.id;
 
 DEFINE FIELD content ON comment TYPE string;
-DEFINE FIELD created_at ON comment TYPE datetime DEFAULT time::now();
+DEFINE FIELD created_at ON comment TYPE datetime VALUE time::now() READONLY;
 DEFINE TABLE permission SCHEMAFULL
     PERMISSIONS
         FOR select FULL
         FOR create, update, delete NONE;
 
 DEFINE FIELD name ON permission TYPE string;
-DEFINE FIELD created_at ON permission TYPE datetime DEFAULT time::now();
+DEFINE FIELD created_at ON permission TYPE datetime VALUE time::now() READONLY;
 
 DEFINE INDEX unique_name ON permission COLUMNS name UNIQUE;
 DEFINE TABLE post SCHEMALESS
@@ -206,7 +206,7 @@ DEFINE TABLE post SCHEMALESS
 DEFINE FIELD title ON post TYPE string;
 DEFINE FIELD content ON post TYPE string;
 DEFINE FIELD author ON post TYPE record<user>;
-DEFINE FIELD created_at ON post TYPE datetime DEFAULT time::now();
+DEFINE FIELD created_at ON post TYPE datetime VALUE time::now() READONLY;
 DEFINE FIELD status ON post TYPE string DEFAULT 'DRAFT' ASSERT $value IN ['DRAFT', 'PUBLISHED'];
 DEFINE TABLE script_migration SCHEMAFULL
     PERMISSIONS
@@ -214,7 +214,7 @@ DEFINE TABLE script_migration SCHEMAFULL
         FOR create, update, delete NONE;
 
 DEFINE FIELD script_name ON script_migration TYPE string;
-DEFINE FIELD executed_at ON script_migration TYPE datetime DEFAULT time::now();
+DEFINE FIELD executed_at ON script_migration TYPE datetime VALUE time::now() READONLY;
 DEFINE TABLE user SCHEMAFULL
     PERMISSIONS
         FOR select FULL
@@ -224,7 +224,7 @@ DEFINE TABLE user SCHEMAFULL
 DEFINE FIELD username ON user TYPE string;
 DEFINE FIELD email ON user TYPE string ASSERT string::is::email($value);
 DEFINE FIELD password ON user TYPE string;
-DEFINE FIELD registered_at ON user TYPE datetime DEFAULT time::now();
+DEFINE FIELD registered_at ON user TYPE datetime VALUE time::now() READONLY;
 DEFINE FIELD avatar ON user TYPE option<string>;
 
 DEFINE FIELD permissions ON user TYPE array<record<permission>> 
diff --git a/tests/helpers/io.rs b/tests/helpers/io.rs
index d7f60d7..7afb8e2 100644
--- a/tests/helpers/io.rs
+++ b/tests/helpers/io.rs
@@ -202,7 +202,7 @@ pub fn add_category_schema_file(path: &Path) -> Result<()> {
         const CONTENT: &str = "DEFINE TABLE category SCHEMALESS;
 
 DEFINE FIELD name ON category TYPE string;
-DEFINE FIELD created_at ON category TYPE datetime DEFAULT time::now();";
+DEFINE FIELD created_at ON category TYPE datetime VALUE time::now() READONLY;";
 
         fs::write(schema_file, CONTENT)?;
     }
@@ -262,7 +262,7 @@ pub fn add_archive_schema_file(path: &Path) -> Result<()> {
 DEFINE FIELD name ON archive TYPE string;
 DEFINE FIELD from_date ON archive TYPE datetime;
 DEFINE FIELD to_date ON archive TYPE datetime;
-DEFINE FIELD created_at ON archive TYPE datetime DEFAULT time::now();";
+DEFINE FIELD created_at ON archive TYPE datetime VALUE time::now() READONLY;";
 
         fs::write(schema_file, CONTENT)?;
     }