diff --git a/website/docs/user-guide/rust/api-reference.md b/website/docs/user-guide/rust/api-reference.md
index 2d149aac..30ce5c2d 100644
--- a/website/docs/user-guide/rust/api-reference.md
+++ b/website/docs/user-guide/rust/api-reference.md
@@ -375,24 +375,25 @@ Implements the `InternalRow` trait (see below).
 
 ## `InternalRow` trait
 
-| Method                                                                         |  Description                            |
-|--------------------------------------------------------------------------------|-----------------------------------------|
-| `fn get_boolean(&self, idx: usize) -> bool`                                    | Get boolean value                       |
-| `fn get_byte(&self, idx: usize) -> i8`                                         | Get tinyint value                       |
-| `fn get_short(&self, idx: usize) -> i16`                                       | Get smallint value                      |
-| `fn get_int(&self, idx: usize) -> i32`                                         | Get int value                           |
-| `fn get_long(&self, idx: usize) -> i64`                                        | Get bigint value                        |
-| `fn get_float(&self, idx: usize) -> f32`                                       | Get float value                         |
-| `fn get_double(&self, idx: usize) -> f64`                                      | Get double value                        |
-| `fn get_string(&self, idx: usize) -> &str`                                     | Get string value                        |
-| `fn get_decimal(&self, idx: usize, precision: usize, scale: usize) -> Decimal` | Get decimal value                       |
-| `fn get_date(&self, idx: usize) -> Date`                                       | Get date value                          |
-| `fn get_time(&self, idx: usize) -> Time`                                       | Get time value                          |
-| `fn get_timestamp_ntz(&self, idx: usize, precision: u32) -> TimestampNtz`      | Get timestamp value                     |
-| `fn get_timestamp_ltz(&self, idx: usize, precision: u32) -> TimestampLtz`      | Get timestamp with local timezone value |
-| `fn get_bytes(&self, idx: usize) -> &[u8]`                                     | Get bytes value                         |
-| `fn get_binary(&self, idx: usize, length: usize) -> &[u8]`                     | Get fixed-length binary value           |
-| `fn get_char(&self, idx: usize, length: usize) -> &str`                        | Get fixed-length char value             |
+| Method                                                                                 | Description                             |
+|----------------------------------------------------------------------------------------|-----------------------------------------|
+| `fn is_null_at(&self, idx: usize) -> Result<bool>`                                     | Check if a field is null                |
+| `fn get_boolean(&self, idx: usize) -> Result<bool>`                                    | Get boolean value                       |
+| `fn get_byte(&self, idx: usize) -> Result<i8>`                                         | Get tinyint value                       |
+| `fn get_short(&self, idx: usize) -> Result<i16>`                                       | Get smallint value                      |
+| `fn get_int(&self, idx: usize) -> Result<i32>`                                         | Get int value                           |
+| `fn get_long(&self, idx: usize) -> Result<i64>`                                        | Get bigint value                        |
+| `fn get_float(&self, idx: usize) -> Result<f32>`                                       | Get float value                         |
+| `fn get_double(&self, idx: usize) -> Result<f64>`                                      | Get double value                        |
+| `fn get_string(&self, idx: usize) -> Result<&str>`                                     | Get string value                        |
+| `fn get_decimal(&self, idx: usize, precision: usize, scale: usize) -> Result<Decimal>` | Get decimal value                       |
+| `fn get_date(&self, idx: usize) -> Result<Date>`                                       | Get date value                          |
+| `fn get_time(&self, idx: usize) -> Result<Time>`                                       | Get time value                          |
+| `fn get_timestamp_ntz(&self, idx: usize, precision: u32) -> Result<TimestampNtz>`      | Get timestamp value                     |
+| `fn get_timestamp_ltz(&self, idx: usize, precision: u32) -> Result<TimestampLtz>`      | Get timestamp with local timezone value |
+| `fn get_bytes(&self, idx: usize) -> Result<&[u8]>`                                     | Get bytes value                         |
+| `fn get_binary(&self, idx: usize, length: usize) -> Result<&[u8]>`                     | Get fixed-length binary value           |
+| `fn get_char(&self, idx: usize, length: usize) -> Result<&str>`                        | Get fixed-length char value             |
 
 ## `ChangeType`
 
diff --git a/website/docs/user-guide/rust/data-types.md b/website/docs/user-guide/rust/data-types.md
index fe050bfc..143fe345 100644
--- a/website/docs/user-guide/rust/data-types.md
+++ b/website/docs/user-guide/rust/data-types.md
@@ -67,14 +67,14 @@ use fluss::row::InternalRow;
 for record in scan_records {
     let row = record.row();
 
-    if row.is_null_at(0) {
+    if row.is_null_at(0)? {
         // field is null
     }
-    let id: i32 = row.get_int(0);
-    let name: &str = row.get_string(1);
-    let score: f32 = row.get_float(2);
-    let date: Date = row.get_date(3);
-    let ts: TimestampNtz = row.get_timestamp_ntz(4, 6);
-    let decimal: Decimal = row.get_decimal(5, 10, 2);
+    let id: i32 = row.get_int(0)?;
+    let name: &str = row.get_string(1)?;
+    let score: f32 = row.get_float(2)?;
+    let date: Date = row.get_date(3)?;
+    let ts: TimestampNtz = row.get_timestamp_ntz(4, 6)?;
+    let decimal: Decimal = row.get_decimal(5, 10, 2)?;
 }
 ```
diff --git a/website/docs/user-guide/rust/example/index.md b/website/docs/user-guide/rust/example/index.md
index dcee87b0..e35c8dc3 100644
--- a/website/docs/user-guide/rust/example/index.md
+++ b/website/docs/user-guide/rust/example/index.md
@@ -48,7 +48,7 @@ async fn main() -> Result<()> {
     let records = scanner.poll(Duration::from_secs(5)).await?;
     for record in records {
         let row = record.row();
-        println!("id={}, name={}", row.get_int(0), row.get_string(1));
+        println!("id={}, name={}", row.get_int(0)?, row.get_string(1)?);
     }
 
     Ok(())
diff --git a/website/docs/user-guide/rust/example/log-tables.md b/website/docs/user-guide/rust/example/log-tables.md
index f5a4d0e2..7c01cf1c 100644
--- a/website/docs/user-guide/rust/example/log-tables.md
+++ b/website/docs/user-guide/rust/example/log-tables.md
@@ -70,8 +70,8 @@ for (bucket, bucket_records) in records.records_by_buckets() {
         let row = record.row();
         println!(
             "  event_id={}, event_type={} @ offset={}",
-            row.get_int(0),
-            row.get_string(1),
+            row.get_int(0)?,
+            row.get_string(1)?,
             record.offset()
         );
     }
@@ -82,9 +82,9 @@ for record in records {
     let row = record.row();
     println!(
         "event_id={}, event_type={}, timestamp={} @ offset={}",
-        row.get_int(0),
-        row.get_string(1),
-        row.get_long(2),
+        row.get_int(0)?,
+        row.get_string(1)?,
+        row.get_long(2)?,
         record.offset()
     );
 }
diff --git a/website/docs/user-guide/rust/example/partitioned-tables.md b/website/docs/user-guide/rust/example/partitioned-tables.md
index 3edf4d88..40bd4d60 100644
--- a/website/docs/user-guide/rust/example/partitioned-tables.md
+++ b/website/docs/user-guide/rust/example/partitioned-tables.md
@@ -208,7 +208,7 @@ key.set_field(2, 1i64);    // zone (partition column)
 
 let result = lookuper.lookup(&key).await?;
 if let Some(row) = result.get_single_row()? {
-    println!("Found: score={}", row.get_long(3));
+    println!("Found: score={}", row.get_long(3)?);
 }
 ```
 
diff --git a/website/docs/user-guide/rust/example/primary-key-tables.md b/website/docs/user-guide/rust/example/primary-key-tables.md
index 5b299cca..9e819796 100644
--- a/website/docs/user-guide/rust/example/primary-key-tables.md
+++ b/website/docs/user-guide/rust/example/primary-key-tables.md
@@ -104,9 +104,9 @@ let result = lookuper.lookup(&key).await?;
 if let Some(row) = result.get_single_row()? {
     println!(
         "Found: id={}, name={}, age={}",
-        row.get_int(0),
-        row.get_string(1),
-        row.get_long(2)
+        row.get_int(0)?,
+        row.get_string(1)?,
+        row.get_long(2)?
     );
 } else {
     println!("Record not found");