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Merged
ricardohsmello merged 2 commits into from
Dec 23, 2025
Merged

feat: Add all missing Aggregation challenges and create Merge challen… #37

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fa0774c
feat: Add all missing Aggregation challenges and create Merge challen…
ricardohsmello Dec 17, 2025
b770506
feat: pr review changes
ricardohsmello Dec 17, 2025
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56 changes: 56 additions & 0 deletions java/100_aggregation_pipeline_match.ipynb
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Original file line number Diff line number Diff line change
Expand Up @@ -179,6 +179,62 @@
" System.out.println(\"book: \" + doc.toJson());\n",
"}"
]
},
{
"cell_type": "markdown",
"id": "e036292d",
"metadata": {},
"source": [
"## Challenges"
]
},
{
"cell_type": "markdown",
"id": "a990232f",
"metadata": {},
"source": [
"### Find books with more than 2 available copies.\n",
"\n",
"[Solution here](https://mongodb-developer.github.io/sql-to-query-api-lab/docs/aggregation/match-project#-1-find-books-with-more-than-2-available-copies)"
]
},
{
"cell_type": "code",
"execution_count": null,
"id": "86121908",
"metadata": {
"vscode": {
"languageId": "java"
}
},
"outputs": [],
"source": [
"// type your code here"
]
},
{
"cell_type": "markdown",
"id": "09e83abe",
"metadata": {},
"source": [
"### Find books with more than 2 available copies. Return only book titles and publication year.\n",
"\n",
"[Solution here](https://mongodb-developer.github.io/sql-to-query-api-lab/docs/aggregation/match-project#-2-find-books-with-more-than-2-available-copies-return-only-book-titles-and-publication-year)"
]
},
{
"cell_type": "code",
"execution_count": null,
"id": "9e036fa7",
"metadata": {
"vscode": {
"languageId": "java"
}
},
"outputs": [],
"source": [
"// type your code here"
]
}
],
"metadata": {
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54 changes: 54 additions & 0 deletions java/101_aggregation_pipeline_arrays.ipynb
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Original file line number Diff line number Diff line change
Expand Up @@ -146,6 +146,60 @@
" System.out.println(\"book: \" + doc.toJson());\n",
"}"
]
},
{
"cell_type": "markdown",
"id": "d2f8a2de",
"metadata": {},
"source": [
"## Challenge"
]
},
{
"cell_type": "markdown",
"id": "eae3a6b1",
"metadata": {},
"source": [
"### 1. After the year 2000, which book has the most number of authors? (Using $project)\n",
"[Solution here](https://mongodb-developer.github.io/sql-to-query-api-lab/docs/aggregation/sort-limit#-1-after-the-year-2000-which-book-has-the-most-number-of-authors)"
]
},
{
"cell_type": "code",
"execution_count": null,
"id": "a9156af7",
"metadata": {
"vscode": {
"languageId": "java"
}
},
"outputs": [],
"source": [
"// type your code here"
]
},
{
"cell_type": "markdown",
"id": "652df0c6",
"metadata": {},
"source": [
"### 2. After the year 2000, which book has the most number of authors? (Using $addFields)\n",
"[Solution here](https://mongodb-developer.github.io/sql-to-query-api-lab/docs/aggregation/sort-limit#-1-after-the-year-2000-which-book-has-the-most-number-of-authors)"
]
},
{
"cell_type": "code",
"execution_count": null,
"id": "3c4cea9c",
"metadata": {
"vscode": {
"languageId": "java"
}
},
"outputs": [],
"source": [
"// type your code here"
]
}
],
"metadata": {
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31 changes: 31 additions & 0 deletions java/103_aggregation_pipeline_lookup.ipynb
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Original file line number Diff line number Diff line change
Expand Up @@ -104,6 +104,37 @@
" System.out.println(\"book: \" + doc.toJson());\n",
"}"
]
},
{
"cell_type": "markdown",
"id": "b45d499e",
"metadata": {},
"source": [
"## Challenge"
]
},
{
"cell_type": "markdown",
"id": "eca1333b",
"metadata": {},
"source": [
"### 1. Fetch books with their associated reviews\n",
"[Solution here](https://mongodb-developer.github.io/sql-to-query-api-lab/docs/aggregation/lookup#-1-fetch-books-with-their-associated-reviews)"
]
},
{
"cell_type": "code",
"execution_count": null,
"id": "b6327590",
"metadata": {
"vscode": {
"languageId": "java"
}
},
"outputs": [],
"source": [
"// type your code here"
]
}
],
"metadata": {
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71 changes: 66 additions & 5 deletions java/104_aggregation_pipeline_group_by.ipynb
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Original file line number Diff line number Diff line change
Expand Up @@ -29,11 +29,7 @@
"cell_type": "code",
"execution_count": null,
"id": "66ef28c4-f86b-4576-839e-100a7ae022c7",
"metadata": {
"vscode": {
"languageId": "java"
}
},
"metadata": {},
"outputs": [],
"source": [
"// Import the MongoDB Driver using Maven\n",
Expand Down Expand Up @@ -93,6 +89,71 @@
" System.out.println(\"book: \" + doc.toJson());\n",
"}"
]
},
{
"cell_type": "markdown",
"id": "33300d88",
"metadata": {},
"source": [
"## Challenge"
]
},
{
"cell_type": "markdown",
"id": "d96043ab",
"metadata": {},
"source": [
"### 1. Find the average book rating of all books\n",
"[Solution here](https://mongodb-developer.github.io/sql-to-query-api-lab/docs/aggregation/group#-1-find-the-average-book-rating-of-all-books)"
]
},
{
"cell_type": "code",
"execution_count": null,
"id": "c0bd8122",
"metadata": {},
"outputs": [],
"source": [
"// type your code here"
]
},
{
"cell_type": "markdown",
"id": "2b9bb53e",
"metadata": {},
"source": [
"### 2. Find users with the most number of reviews (Hint: use sum + sort)\n",
"[Solution here](https://mongodb-developer.github.io/sql-to-query-api-lab/docs/aggregation/group#-2-find-users-with-the-most-number-of-reviews-hint-use-the-name-field-in-the-reviews-collection)"
]
},
{
"cell_type": "code",
"execution_count": null,
"id": "1ca60877",
"metadata": {},
"outputs": [],
"source": [
"// type your code here"
]
},
{
"cell_type": "markdown",
"id": "74e33d58",
"metadata": {},
"source": [
"### 3. Find users with the most number of reviews (Hint: use $sortByCount)\n",
"[Solution here](https://mongodb-developer.github.io/sql-to-query-api-lab/docs/aggregation/group#-2-find-users-with-the-most-number-of-reviews-hint-use-the-name-field-in-the-reviews-collection)"
]
},
{
"cell_type": "code",
"execution_count": null,
"id": "e38a71b5",
"metadata": {},
"outputs": [],
"source": [
"// type your code here"
]
}
],
"metadata": {
Expand Down
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