diff --git a/README.md b/README.md
index 571d56f1..846ce0c9 100644
--- a/README.md
+++ b/README.md
@@ -133,6 +133,7 @@ cargo pgx test --features all_fdws,pg15
 
 - Windows is not supported, that limitation inherits from [pgx](https://github.com/tcdi/pgx).
 - Currently only supports PostgreSQL v14 and v15.
+- Generated column is not supported.
 
 ## Contribution
 
diff --git a/supabase-wrappers/README.md b/supabase-wrappers/README.md
index 950ce1f8..3872b850 100644
--- a/supabase-wrappers/README.md
+++ b/supabase-wrappers/README.md
@@ -130,6 +130,7 @@ wrappers=# select * from hello;
 
 - Windows is not supported, that limitation inherits from [pgx](https://github.com/tcdi/pgx).
 - Currently only supports PostgreSQL v14 and v15.
+- Generated column is not supported.
 
 ## Contribution
 
diff --git a/supabase-wrappers/src/utils.rs b/supabase-wrappers/src/utils.rs
index 7e17219e..dea71ab2 100644
--- a/supabase-wrappers/src/utils.rs
+++ b/supabase-wrappers/src/utils.rs
@@ -263,6 +263,12 @@ pub(super) unsafe fn extract_target_columns(
         let attno = (*var).varattno;
         let attname = pg_sys::get_attname((*rte).relid, attno, true);
         if !attname.is_null() {
+            // generated column is not supported
+            if pg_sys::get_attgenerated((*rte).relid, attno) > 0 {
+                report_warning("generated column is not supported");
+                continue;
+            }
+
             let type_oid = pg_sys::get_atttype((*rte).relid, attno);
             ret.push(Column {
                 name: CStr::from_ptr(attname).to_str().unwrap().to_owned(),