diff --git a/sql/taxi/taxi01-sql-basico.ipynb b/sql/taxi/taxi01-sql-basico.ipynb
index 79edf92..d555c61 100644
--- a/sql/taxi/taxi01-sql-basico.ipynb
+++ b/sql/taxi/taxi01-sql-basico.ipynb
@@ -448,13 +448,13 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 15,
+   "execution_count": 8,
    "metadata": {},
    "outputs": [
     {
      "data": {
       "application/vnd.jupyter.widget-view+json": {
-       "model_id": "db021719-771b-4214-b8da-c89e4b83e905",
+       "model_id": "ef7975f5-524b-4b39-88d4-6b480c6ab51f",
        "version_major": 2,
        "version_minor": 0
       },
@@ -467,7 +467,7 @@
    "source": [
     "SELECT Nome\n",
     "       FROM Cliente\n",
-    "       ORDER BY Nome;"
+    "       ORDER BY Nome DESC;"
    ]
   },
   {
@@ -820,13 +820,13 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 26,
+   "execution_count": 9,
    "metadata": {},
    "outputs": [
     {
      "data": {
       "application/vnd.jupyter.widget-view+json": {
-       "model_id": "edae2c6e-f7fe-40c0-a78f-d654e0198163",
+       "model_id": "bf886757-10eb-4743-b1d1-b4b33506be9c",
        "version_major": 2,
        "version_minor": 0
       },
@@ -853,13 +853,13 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 27,
+   "execution_count": 10,
    "metadata": {},
    "outputs": [
     {
      "data": {
       "application/vnd.jupyter.widget-view+json": {
-       "model_id": "214902d4-26ad-4de5-8e32-21ef2a583a61",
+       "model_id": "9b1f868d-f82d-4f22-ae29-b1746721d217",
        "version_major": 2,
        "version_minor": 0
       },
@@ -891,13 +891,13 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 28,
+   "execution_count": 18,
    "metadata": {},
    "outputs": [
     {
      "data": {
       "application/vnd.jupyter.widget-view+json": {
-       "model_id": "04eed808-0f4e-41cd-b623-314b756d0ff2",
+       "model_id": "c703a780-287f-4c70-8f77-63e0d53320ad",
        "version_major": 2,
        "version_minor": 0
       },
@@ -967,13 +967,13 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 31,
+   "execution_count": 11,
    "metadata": {},
    "outputs": [
     {
      "data": {
       "application/vnd.jupyter.widget-view+json": {
-       "model_id": "afc5feab-35e3-485e-80e6-8be1f5562b0f",
+       "model_id": "bf598a87-db3c-476d-8733-170038021bf7",
        "version_major": 2,
        "version_minor": 0
       },
@@ -991,6 +991,110 @@
     "       GROUP BY Cl.Nome, T.Modelo;"
    ]
   },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Contando Itens Distintos"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "### Quantos clientes distintos tomaram cada modelo de táxi"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 13,
+   "metadata": {},
+   "outputs": [
+    {
+     "data": {
+      "application/vnd.jupyter.widget-view+json": {
+       "model_id": "c9d5a0ad-4e19-4f05-af98-2c1ff87b43a2",
+       "version_major": 2,
+       "version_minor": 0
+      },
+      "method": "display_data"
+     },
+     "metadata": {},
+     "output_type": "display_data"
+    }
+   ],
+   "source": [
+    "SELECT T.Modelo, Cl.Nome, COUNT(*)\n",
+    "       FROM Cliente Cl, Corrida Co, Taxi T \n",
+    "       WHERE Cl.CliId = Co.CliId AND \n",
+    "             Co.Placa = T.Placa\n",
+    "       GROUP BY T.Modelo, Cl.Nome;"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "#### Sem distinguir clientes"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 16,
+   "metadata": {},
+   "outputs": [
+    {
+     "data": {
+      "application/vnd.jupyter.widget-view+json": {
+       "model_id": "3f79acc3-a311-4f4c-a540-2d5d7f94d15b",
+       "version_major": 2,
+       "version_minor": 0
+      },
+      "method": "display_data"
+     },
+     "metadata": {},
+     "output_type": "display_data"
+    }
+   ],
+   "source": [
+    "SELECT T.Modelo, COUNT(*)\n",
+    "       FROM Taxi T, Corrida Co\n",
+    "       WHERE Co.Placa = T.Placa\n",
+    "       GROUP BY T.Modelo;"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "#### Com distinção de clientes"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 17,
+   "metadata": {},
+   "outputs": [
+    {
+     "data": {
+      "application/vnd.jupyter.widget-view+json": {
+       "model_id": "200d23e7-e3b1-4560-ae74-ca8b99e9dd98",
+       "version_major": 2,
+       "version_minor": 0
+      },
+      "method": "display_data"
+     },
+     "metadata": {},
+     "output_type": "display_data"
+    }
+   ],
+   "source": [
+    "SELECT T.Modelo, COUNT(DISTINCT Co.CliId)\n",
+    "       FROM Taxi T, Corrida Co\n",
+    "       WHERE Co.Placa = T.Placa\n",
+    "       GROUP BY T.Modelo;"
+   ]
+  },
   {
    "cell_type": "markdown",
    "metadata": {},