added query template

data/beginners_kit.ipynb

@@ -1,6 +1,7 @@
 {
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    "metadata": {},
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@@ -15,6 +16,7 @@
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@@ -49,6 +51,7 @@
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@@ -87,6 +90,7 @@
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@@ -140,6 +144,7 @@
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@@ -159,6 +164,7 @@
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@@ -177,6 +183,7 @@
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@@ -195,6 +202,7 @@
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@@ -213,6 +221,7 @@
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    "cell_type": "markdown",
    "metadata": {
     "tags": []
@@ -233,6 +242,7 @@
    ]
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     "tags": []
@@ -253,12 +263,36 @@
    ]
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   {
+   "attachments": {},
    "cell_type": "markdown",
    "metadata": {
     "tags": []
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    "source": [
-    "## Exercises \n",
+    "## Exercises "
+   ]
+  },
+  {
+   "attachments": {},
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "All the exercises follow the following template.\n",
+    "```python\n",
+    "query = \"\"\"\n",
+    "SELECT <columns>\n",
+    "FROM <table>\n",
+    "\"\"\"\n",
+    "\n",
+    "spark.sql(query).limit(20).toPandas()\n",
+    "```"
+   ]
+  },
+  {
+   "attachments": {},
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
     "### **Task**: Split relations based on their semantics and compute their numbers; sort results in descending order, limit to the first 20. "
    ]
   },
@@ -283,6 +317,7 @@
    ]
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@@ -313,6 +348,7 @@
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    "metadata": {
     "tags": []
@@ -351,6 +387,7 @@
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@@ -376,6 +413,7 @@
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@@ -407,6 +445,7 @@
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     "tags": []
@@ -434,6 +473,7 @@
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@@ -460,6 +500,7 @@
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@@ -486,6 +527,7 @@
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@@ -515,6 +557,7 @@
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@@ -543,6 +586,7 @@
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@@ -572,6 +616,7 @@
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@@ -605,6 +650,7 @@
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@@ -638,6 +684,7 @@
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@@ -670,6 +717,7 @@
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@@ -702,6 +750,7 @@
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@@ -730,6 +779,7 @@
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    "source": [