diff --git a/internal/compiler/output_columns.go b/internal/compiler/output_columns.go
index 557fb7d575..723b4d107e 100644
--- a/internal/compiler/output_columns.go
+++ b/internal/compiler/output_columns.go
@@ -3,6 +3,7 @@ package compiler
 import (
 	"errors"
 	"fmt"
+	"strings"
 
 	"github.com/sqlc-dev/sqlc/internal/config"
 	"github.com/sqlc-dev/sqlc/internal/sql/ast"
@@ -349,11 +350,15 @@ func (c *Compiler) outputColumns(qc *QueryCatalog, node ast.Node) ([]*Column, er
 				if err != nil {
 					return nil, err
 				}
-				first := subcols[0]
+				first := *subcols[0]
 				if res.Name != nil {
 					first.Name = *res.Name
 				}
-				cols = append(cols, first)
+				// A scalar subquery that matches no row yields NULL
+				if !yieldsOneRow(n.Subselect) {
+					first.NotNull = false
+				}
+				cols = append(cols, &first)
 			default:
 				cols = append(cols, &Column{Name: name, DataType: "any", NotNull: false})
 			}
@@ -810,3 +815,52 @@ func findColumnForRef(ref *ast.ColumnRef, tables []*Table, targetList *ast.List)
 
 	return nil
 }
+
+// aggregates names the aggregate functions that return a row even when no row
+// matches, as count(*) does
+var aggregates = map[string]bool{
+	"count": true, "sum": true, "avg": true, "min": true, "max": true,
+	"bool_and": true, "bool_or": true, "every": true, "array_agg": true,
+	"string_agg": true, "json_agg": true, "jsonb_agg": true,
+	"json_object_agg": true, "jsonb_object_agg": true,
+}
+
+// yieldsOneRow reports whether a scalar subquery always yields exactly one row:
+// a SELECT with no FROM or WHERE, or one whose every column is an aggregate,
+// with no GROUP BY, HAVING, LIMIT, OFFSET or set operation.
+func yieldsOneRow(node ast.Node) bool {
+	sel, ok := node.(*ast.SelectStmt)
+	if !ok || sel.Op != ast.None || given(sel.LimitCount) || given(sel.LimitOffset) || given(sel.HavingClause) {
+		return false
+	}
+	if sel.GroupClause != nil && len(sel.GroupClause.Items) > 0 {
+		return false
+	}
+	if (sel.FromClause == nil || len(sel.FromClause.Items) == 0) && !given(sel.WhereClause) {
+		return true
+	}
+	if sel.TargetList == nil || len(sel.TargetList.Items) == 0 {
+		return false
+	}
+	for _, item := range sel.TargetList.Items {
+		res, ok := item.(*ast.ResTarget)
+		if !ok {
+			return false
+		}
+		call, ok := res.Val.(*ast.FuncCall)
+		if !ok || call.Func == nil || call.Over != nil || !aggregates[strings.ToLower(call.Func.Name)] {
+			return false
+		}
+	}
+	return true
+}
+
+// given reports whether a clause was written: the parser leaves one that wasn't
+// as nil or as a placeholder
+func given(n ast.Node) bool {
+	if n == nil {
+		return false
+	}
+	_, placeholder := n.(*ast.TODO)
+	return !placeholder
+}
diff --git a/internal/endtoend/testdata/nullable_scalar_subquery/postgresql/issue.md b/internal/endtoend/testdata/nullable_scalar_subquery/postgresql/issue.md
new file mode 100644
index 0000000000..937656a958
--- /dev/null
+++ b/internal/endtoend/testdata/nullable_scalar_subquery/postgresql/issue.md
@@ -0,0 +1 @@
+https://github.com/sqlc-dev/sqlc/issues/4262
diff --git a/internal/endtoend/testdata/nullable_scalar_subquery/postgresql/stdlib/go/db.go b/internal/endtoend/testdata/nullable_scalar_subquery/postgresql/stdlib/go/db.go
new file mode 100644
index 0000000000..32faa9f2b8
--- /dev/null
+++ b/internal/endtoend/testdata/nullable_scalar_subquery/postgresql/stdlib/go/db.go
@@ -0,0 +1,31 @@
+// Code generated by sqlc. DO NOT EDIT.
+// versions:
+//   sqlc v1.31.1
+
+package querytest
+
+import (
+	"context"
+	"database/sql"
+)
+
+type DBTX interface {
+	ExecContext(context.Context, string, ...any) (sql.Result, error)
+	PrepareContext(context.Context, string) (*sql.Stmt, error)
+	QueryContext(context.Context, string, ...any) (*sql.Rows, error)
+	QueryRowContext(context.Context, string, ...any) *sql.Row
+}
+
+func New(db DBTX) *Queries {
+	return &Queries{db: db}
+}
+
+type Queries struct {
+	db DBTX
+}
+
+func (q *Queries) WithTx(tx *sql.Tx) *Queries {
+	return &Queries{
+		db: tx,
+	}
+}
diff --git a/internal/endtoend/testdata/nullable_scalar_subquery/postgresql/stdlib/go/models.go b/internal/endtoend/testdata/nullable_scalar_subquery/postgresql/stdlib/go/models.go
new file mode 100644
index 0000000000..9604257721
--- /dev/null
+++ b/internal/endtoend/testdata/nullable_scalar_subquery/postgresql/stdlib/go/models.go
@@ -0,0 +1,25 @@
+// Code generated by sqlc. DO NOT EDIT.
+// versions:
+//   sqlc v1.31.1
+
+package querytest
+
+import (
+	"database/sql"
+)
+
+type Book struct {
+	ID    int32
+	Title string
+}
+
+type BookView struct {
+	ID       int32
+	ReviewID sql.NullInt32
+	Reviews  int64
+}
+
+type Review struct {
+	ID     int32
+	BookID int32
+}
diff --git a/internal/endtoend/testdata/nullable_scalar_subquery/postgresql/stdlib/go/query.sql.go b/internal/endtoend/testdata/nullable_scalar_subquery/postgresql/stdlib/go/query.sql.go
new file mode 100644
index 0000000000..96fbb24423
--- /dev/null
+++ b/internal/endtoend/testdata/nullable_scalar_subquery/postgresql/stdlib/go/query.sql.go
@@ -0,0 +1,74 @@
+// Code generated by sqlc. DO NOT EDIT.
+// versions:
+//   sqlc v1.31.1
+// source: query.sql
+
+package querytest
+
+import (
+	"context"
+	"database/sql"
+)
+
+const inline = `-- name: Inline :many
+select (select r.id from reviews r where r.book_id = b.id limit 1) review_id,
+  (select count(*) from reviews r where r.book_id = b.id) reviews,
+  (select 1) one
+from books b
+`
+
+type InlineRow struct {
+	ReviewID sql.NullInt32
+	Reviews  int64
+	One      int32
+}
+
+func (q *Queries) Inline(ctx context.Context) ([]InlineRow, error) {
+	rows, err := q.db.QueryContext(ctx, inline)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+	var items []InlineRow
+	for rows.Next() {
+		var i InlineRow
+		if err := rows.Scan(&i.ReviewID, &i.Reviews, &i.One); err != nil {
+			return nil, err
+		}
+		items = append(items, i)
+	}
+	if err := rows.Close(); err != nil {
+		return nil, err
+	}
+	if err := rows.Err(); err != nil {
+		return nil, err
+	}
+	return items, nil
+}
+
+const throughView = `-- name: ThroughView :many
+select id, review_id, reviews from book_view
+`
+
+func (q *Queries) ThroughView(ctx context.Context) ([]BookView, error) {
+	rows, err := q.db.QueryContext(ctx, throughView)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+	var items []BookView
+	for rows.Next() {
+		var i BookView
+		if err := rows.Scan(&i.ID, &i.ReviewID, &i.Reviews); err != nil {
+			return nil, err
+		}
+		items = append(items, i)
+	}
+	if err := rows.Close(); err != nil {
+		return nil, err
+	}
+	if err := rows.Err(); err != nil {
+		return nil, err
+	}
+	return items, nil
+}
diff --git a/internal/endtoend/testdata/nullable_scalar_subquery/postgresql/stdlib/query.sql b/internal/endtoend/testdata/nullable_scalar_subquery/postgresql/stdlib/query.sql
new file mode 100644
index 0000000000..cc29cb1399
--- /dev/null
+++ b/internal/endtoend/testdata/nullable_scalar_subquery/postgresql/stdlib/query.sql
@@ -0,0 +1,8 @@
+-- name: ThroughView :many
+select id, review_id, reviews from book_view;
+
+-- name: Inline :many
+select (select r.id from reviews r where r.book_id = b.id limit 1) review_id,
+  (select count(*) from reviews r where r.book_id = b.id) reviews,
+  (select 1) one
+from books b;
diff --git a/internal/endtoend/testdata/nullable_scalar_subquery/postgresql/stdlib/schema.sql b/internal/endtoend/testdata/nullable_scalar_subquery/postgresql/stdlib/schema.sql
new file mode 100644
index 0000000000..601f2cfac3
--- /dev/null
+++ b/internal/endtoend/testdata/nullable_scalar_subquery/postgresql/stdlib/schema.sql
@@ -0,0 +1,6 @@
+create table books (id int primary key, title text not null);
+create table reviews (id int primary key, book_id int not null);
+create view book_view as
+  select b.id, (select r.id from reviews r where r.book_id = b.id limit 1) review_id,
+    (select count(*) from reviews r where r.book_id = b.id) reviews
+  from books b;
diff --git a/internal/endtoend/testdata/nullable_scalar_subquery/postgresql/stdlib/sqlc.yaml b/internal/endtoend/testdata/nullable_scalar_subquery/postgresql/stdlib/sqlc.yaml
new file mode 100644
index 0000000000..8c68222b49
--- /dev/null
+++ b/internal/endtoend/testdata/nullable_scalar_subquery/postgresql/stdlib/sqlc.yaml
@@ -0,0 +1,10 @@
+version: "2"
+sql:
+  - engine: "postgresql"
+    schema: "schema.sql"
+    queries: "query.sql"
+    gen:
+      go:
+        package: "querytest"
+        out: "go"
+        sql_package: "database/sql"