diff --git a/cpp/functions/core/sql_workbench.cpp b/cpp/functions/core/sql_workbench.cpp
index ded12b54..7513051c 100644
--- a/cpp/functions/core/sql_workbench.cpp
+++ b/cpp/functions/core/sql_workbench.cpp
@@ -1,5 +1,6 @@
 #include "core/sql_workbench.h"
 
+#include "core/sql_parse.h"
 #include "core/text_editor.h"
 #include "core/tokens.h"
 #include "core/button.h"
@@ -25,24 +26,19 @@ namespace fn {
 
 namespace {
 
-std::string ltrim(const std::string& s) {
-    size_t i = 0;
-    while (i < s.size() && std::isspace(static_cast<unsigned char>(s[i]))) ++i;
-    return s.substr(i);
-}
-
-std::string upper_first_token(const std::string& sql) {
-    std::string t = ltrim(sql);
-    size_t end = 0;
-    while (end < t.size() && !std::isspace(static_cast<unsigned char>(t[end]))) ++end;
-    std::string tok = t.substr(0, end);
-    for (auto& c : tok) c = static_cast<char>(std::toupper(static_cast<unsigned char>(c)));
-    return tok;
+// Clasifica el primer statement con sql_parse pure. Si el input no contiene
+// statements (todo whitespace/comentarios), devuelve Unknown.
+fn_ui::SqlStmtKind first_stmt_kind(const std::string& sql) {
+    auto stmts = fn_ui::sql_parse(sql);
+    if (stmts.empty()) return fn_ui::SqlStmtKind::Unknown;
+    return stmts.front().kind;
 }
 
 bool is_readonly_stmt(const std::string& sql) {
-    const std::string head = upper_first_token(sql);
-    return head == "SELECT" || head == "PRAGMA" || head == "EXPLAIN" || head == "WITH";
+    using K = fn_ui::SqlStmtKind;
+    K k = first_stmt_kind(sql);
+    // sql_parse clasifica WITH como Select; Pragma y Explain son readonly.
+    return k == K::Select || k == K::Pragma || k == K::Explain;
 }
 
 TextEditorState* editor_of(SqlWorkbenchState& state) {
diff --git a/cpp/functions/core/sql_workbench.md b/cpp/functions/core/sql_workbench.md
index 2b4d219e..64a3ccc5 100644
--- a/cpp/functions/core/sql_workbench.md
+++ b/cpp/functions/core/sql_workbench.md
@@ -8,7 +8,7 @@ purity: impure
 signature: "void fn::sql_workbench(const char* id, sqlite3* db, fn::SqlWorkbenchState& state, ImVec2 size); bool fn::sql_workbench_run_query(sqlite3*, const char*, fn::SqlWorkbenchState&); void fn::sql_workbench_load_schema(sqlite3*, fn::SqlWorkbenchState&); void fn::sql_workbench_destroy(fn::SqlWorkbenchState&)"
 description: "Workbench SQL embebido en ImGui: editor con highlighting (text_editor + CodeLang::SQL), tabla de resultados (table_view), sidebar de schema (sqlite_master) e historial. Ejecuta queries contra una sqlite3* del caller (no abre/cierra la DB)."
 tags: [imgui, sql, sqlite, editor, table, dashboard, registry, debug]
-uses_functions: ["button_cpp_core", "table_view_cpp_viz", "text_editor_cpp_core", "tokens_cpp_core"]
+uses_functions: ["button_cpp_core", "sql_parse_cpp_core", "table_view_cpp_viz", "text_editor_cpp_core", "tokens_cpp_core"]
 uses_types: []
 returns: []
 returns_optional: false