diff --git a/src/frontend/planner_test/tests/testdata/input/subquery.yaml b/src/frontend/planner_test/tests/testdata/input/subquery.yaml
index aa88505aa6741..dbff030d081e8 100644
--- a/src/frontend/planner_test/tests/testdata/input/subquery.yaml
+++ b/src/frontend/planner_test/tests/testdata/input/subquery.yaml
@@ -307,3 +307,8 @@
     select Array(select 1 union select 2);
   expected_outputs:
     - batch_plan
+- name: Only table-in-out functions can have subquery parameters. issue 14734
+  sql: |
+    SELECT anon_1.f1 AS "IntegerRange(0, -2, 1)" FROM unnest(CASE WHEN (nullif(1, 0) IS NOT NULL AND sign(1) = sign( -2 - 0)) THEN array_remove(array((SELECT generate_series(0,  -2, 1) AS generate_series_1)),  -2) ELSE CAST(ARRAY[] AS SMALLINT[]) END) AS anon_1(f1);
+  expected_outputs:
+    - binder_error
diff --git a/src/frontend/planner_test/tests/testdata/output/subquery.yaml b/src/frontend/planner_test/tests/testdata/output/subquery.yaml
index 554525b391efd..9b5ced9a051ce 100644
--- a/src/frontend/planner_test/tests/testdata/output/subquery.yaml
+++ b/src/frontend/planner_test/tests/testdata/output/subquery.yaml
@@ -873,7 +873,7 @@
 - name: Only table-in-out functions can have subquery parameters.
   sql: |
     SELECT * FROM generate_series(1, (select 1));
-  binder_error: 'Invalid input syntax: Only table-in-out functions can have subquery parameters, generate_series only accepts constant parameters'
+  binder_error: 'Invalid input syntax: Only table-in-out functions can have subquery parameters. The table function has subquery parameters is generate_series'
 - name: While this one is allowed.
   sql: |
     SELECT generate_series(1, (select 1));
@@ -894,3 +894,7 @@
         └─BatchHashAgg { group_key: [1:Int32], aggs: [] }
           └─BatchExchange { order: [], dist: HashShard(1:Int32) }
             └─BatchValues { rows: [[1:Int32], [2:Int32]] }
+- name: Only table-in-out functions can have subquery parameters. issue 14734
+  sql: |
+    SELECT anon_1.f1 AS "IntegerRange(0, -2, 1)" FROM unnest(CASE WHEN (nullif(1, 0) IS NOT NULL AND sign(1) = sign( -2 - 0)) THEN array_remove(array((SELECT generate_series(0,  -2, 1) AS generate_series_1)),  -2) ELSE CAST(ARRAY[] AS SMALLINT[]) END) AS anon_1(f1);
+  binder_error: 'Invalid input syntax: Only table-in-out functions can have subquery parameters. The table function has subquery parameters is unnest'
diff --git a/src/frontend/src/binder/relation/table_function.rs b/src/frontend/src/binder/relation/table_function.rs
index dbd015351bb5b..d4c0df1f82e60 100644
--- a/src/frontend/src/binder/relation/table_function.rs
+++ b/src/frontend/src/binder/relation/table_function.rs
@@ -119,14 +119,10 @@ impl Binder {
         let func = func?;
 
         if let ExprImpl::TableFunction(func) = &func {
-            if func
-                .args
-                .iter()
-                .any(|arg| matches!(arg, ExprImpl::Subquery(_)))
-            {
+            if func.args.iter().any(|arg| arg.has_subquery()) {
                 // Same error reports as DuckDB.
                 return Err(ErrorCode::InvalidInputSyntax(
-                    format!("Only table-in-out functions can have subquery parameters, {} only accepts constant parameters", func.name()),
+                    format!("Only table-in-out functions can have subquery parameters. The table function has subquery parameters is {}", func.name()),
                 )
                     .into());
             }