m

db/nosql/mongo/docs/tutorials.txt

@@ -1 +1,4 @@
 https://www.tutorialspoint.com/mongodb/index.htm
+
+https://www.studytonight.com/mongodb/
+    6+8+9 parts

db/nosql/mongo/features/3

@@ -0,0 +1,17 @@
+coll
+    .find({"field1": "v1", ...}, {f1: 1, f2: 0}) // 2-nd - projection
+        .pretty()
+        .sort({keyfield: 1/-1, ...})
+            https://www.studytonight.com/mongodb/sorting-in-mongodb
+        skip(N).limit(M)
+        https://www.tutorialsteacher.com/mongodb/cursor
+        !!! cursor
+
+
+operators
+    {$gt: 75}
+    { $gte: new ISODate( "2020-01-30" ), $lt: new ISODate( "2022-01-30" ) }
+    field: {"$exists": false}
+
+???
+ cur = db.world.find();x=cur.next();print(x["speech"]);

db/nosql/mongo/features/administration.txt

@@ -0,0 +1,6 @@
+https://www.mongodb.com/docs/manual/reference/command/nav-administration/
+    https://www.mongodb.com/docs/manual/reference/command/killOp/
+    https://www.mongodb.com/docs/manual/reference/command/currentOp
+
+security
+https://www.mongodb.com/docs/manual/reference/privilege-actions/#mongodb-authaction-inprog

db/nosql/mongo/features/agg-joins.txt

@@ -0,0 +1,37 @@
+https://www.mongodb.com/docs/manual/core/aggregation-pipeline/
+    https://www.mongodb.com/docs/manual/core/aggregation-pipeline-optimization/
+
+https://www.mongodb.com/docs/manual/reference/aggregation/
+
+https://www.mongodb.com/docs/manual/meta/aggregation-quick-reference/
+https://www.mongodb.com/docs/manual/reference/operator/aggregation/interface/
+    commands: aggregate, count, distinct, mapReduce
+
+https://www.mongodb.com/docs/manual/reference/operator/aggregation-pipeline/
+    stages
+    https://www.mongodb.com/docs/manual/core/map-reduce/
+    ! deprecated from 5.0
+https://www.mongodb.com/docs/manual/reference/operator/aggregation/
+https://www.mongodb.com/docs/manual/reference/aggregation-variables/
+    $$<var-name>
+https://www.mongodb.com/docs/manual/reference/sql-aggregation-comparison/
+
+https://www.mongodb.com/docs/manual/tutorial/update-documents-with-aggregation-pipeline/
+
+misc
+    https://www.mongodb.com/docs/manual/reference/operator/aggregation/accumulator/
+
+from-java-driver
+    https://www.mongodb.com/docs/drivers/java/sync/current/fundamentals/aggregation/
+    https://www.mongodb.com/docs/drivers/java/sync/current/fundamentals/builders/aggregates/
+
+2015
+https://www.mongodb.com/blog/post/joins-and-other-aggregation-enhancements-coming-in-mongodb-3-2-part-2-of-3-worked-examples
+https://www.mongodb.com/blog/post/joins-and-other-aggregation-enhancements-coming-in-mongodb-3-2-part-1-of-3-introduction
+    $lookup (left-outer equi-join)
+    $match, $project, $lookup, $group, ..., geoNear, unwind, sample, sort, skip(limit number of docs), redact, out
+
+books
+https://www.practical-mongodb-aggregations.com/front-cover.html
+mongosh
+https://www.mongodb.com/docs/manual/reference/method/db.collection.aggregate

db/nosql/mongo/features/bulk.txt

@@ -0,0 +1 @@
+https://www.mongodb.com/docs/manual/reference/method/js-bulk/

db/nosql/mongo/features/concurrency.txt

@@ -0,0 +1 @@
+https://www.mongodb.com/docs/manual/faq/concurrency/#std-label-faq-concurrency-locking

db/nosql/mongo/features/cursors.txt

@@ -0,0 +1,5 @@
+mongosh
+https://www.mongodb.com/docs/manual/tutorial/iterate-a-cursor/
+
+from-java-driver
+https://www.mongodb.com/docs/drivers/java/sync/current/fundamentals/crud/read-operations/cursor/

db/nosql/mongo/features/db.txt

@@ -1,4 +1,19 @@
+https://www.mongodb.com/docs/manual/reference/method/js-database/
+
 db
+    <mydb>.help()
+    <mydb>.drop()
+    adminCommand({})
     getName()
     getCollectionNames()
-    getCollection(collectionName).find()
+    getCollection(collectionName)
+    .createCollection
+        https://www.studytonight.com/mongodb/collection-create-and-drop-mongodb
+            validation...
+    .dropDatabase() drop existing db
+    .runCommand({...})
+        ({ serverStatus: 1 }).metrics.apiVersions
+
+  
+show dbs
+use <mydb>

db/nosql/mongo/features/inddex.txt

@@ -0,0 +1,8 @@
+col
+  .createIndex({field: val, ...})
+      https://www.studytonight.com/mongodb/indexing-in-mongodb
+
+{<field>: 1}
+
+from-java-driver
+    https://www.mongodb.com/docs/drivers/java/sync/current/fundamentals/builders/indexes/

db/nosql/mongo/features/isolation-concern.txt

@@ -0,0 +1,4 @@
+https://www.mongodb.com/docs/manual/core/read-preference/
+https://www.mongodb.com/docs/manual/reference/read-concern/
+    http://mongodb.github.io/mongo-java-driver/4.10/apidocs/mongodb-driver-core/com/mongodb/ReadConcern.html
+https://www.mongodb.com/docs/manual/reference/write-concern/

db/nosql/mongo/features/log.txt

@@ -0,0 +1 @@
+https://www.mongodb.com/docs/manual/reference/log-messages/

db/nosql/mongo/features/operators.txt

@@ -0,0 +1,10 @@
+https://www.mongodb.com/docs/manual/core/document/
+https://www.mongodb.com/docs/manual/reference/operator/query/
+https://www.mongodb.com/docs/manual/reference/operator/update/
+https://www.mongodb.com/docs/manual/reference/operator/aggregation-pipeline/
+https://www.mongodb.com/docs/manual/reference/operator/aggregation/
+
+$lt
+..
+$add
+$multiply

db/nosql/mongo/features/profile-explain-plan.txt

@@ -0,0 +1,65 @@
+https://www.mongodb.com/docs/manual/core/query-plans/
+https://www.mongodb.com/docs/manual/reference/explain-results/
+https://www.mongodb.com/docs/manual/tutorial/analyze-query-plan/
+
+https://www.mongodb.com/docs/manual/administration/analyzing-mongodb-performance/#locking-performance
+
+https://www.mongodb.com/docs/manual/tutorial/manage-the-database-profiler/
+https://www.mongodb.com/docs/manual/reference/database-profiler/
+    !!! results descr !!!
+        https://www.mongodb.com/docs/manual/core/capped-collections/
+            fixed-size for high-thouput
+    The database profiler writes data in the system.profile capped collection
+        "planCacheKey"
+        "planSummary" : "IXSCAN { a: 1, _id: -1 }",
+        ...
+        "locks"
+        ...
+        "ts" : ISODate("2019-01-14T23:33:01.806Z"),
+        "client" : "127.0.0.1",
+        "appName" : "MongoDB Shell",
+        "allUsers" : [{"user" : "someuser", "db" : "admin"}],
+        "user" : "someuser@admin"
+    https://www.mongodb.com/docs/manual/reference/system-collections/#mongodb-data--database-.system.profile
+
+query-shape
+    https://www.mongodb.com/docs/manual/reference/glossary/#std-term-query-shape
+    A combination of query predicate, sort, projection, and collation.
+    query-hash
+    https://www.mongodb.com/docs/manual/release-notes/4.2/#std-label-4.2-query-hash
+planCache
+    https://www.mongodb.com/docs/manual/reference/operator/aggregation/planCacheStats/
+
+options
+https://www.mongodb.com/docs/manual/reference/configuration-options/#mongodb-setting-operationProfiling.slowOpThresholdMs
+    slow-op-log
+    https://www.mongodb.com/docs/manual/reference/configuration-options/#operationprofiling-options
+
+https://www.mongodb.com/docs/manual/reference/method/db.getProfilingStatus
+    db.getProfilingStatus()
+https://www.mongodb.com/docs/manual/reference/method/db.setProfilingLevel/
+    (0) - disable
+
+sample
+  COLSCAN-bad, IXSCAN-good
+https://www.mongodb.com/docs/manual/reference/method/db.collection.explain
+    db.runCommand({explain: { 'find' : 'collection', 'filter' : { 'brandId' : { '$eq' : 'BRND' } }, 'skip' : 0, 'limit' : 0, 'maxTimeMS' : 60000 }})
+    db.collection.find({"brandId":{"$eq": "BRND"}}).explain()
+    db.collection.explain().find().help()
+    .find(...).explain("executionStats")
+        https://www.mongodb.com/docs/manual/tutorial/analyze-query-plan/
+
+!!!
+You can use $comment to add data to the query predicate to make it easier to analyze data from the profiler.
+https://www.mongodb.com/docs/manual/reference/operator/query/comment/#mongodb-query-op.-comment
+    db.setProfilingLevel(2, 0)
+    db.collection.find( { <query>, $comment: <comment> } )
+    then -> "comment": "val"
+
+! query plan cache commands
+https://www.mongodb.com/docs/manual/reference/command/nav-plan-cache/
+!!! cursor.hint
+https://www.mongodb.com/docs/manual/reference/method/cursor.hint/#mongodb-method-cursor.hint
+
+from-java-driver
+https://www.mongodb.com/docs/drivers/java/sync/current/fundamentals/crud/read-operations/cursor/

db/nosql/mongo/features/ref-modelling.txt

@@ -0,0 +1,11 @@
+https://www.mongodb.com/docs/manual/tutorial/model-embedded-one-to-one-relationships-between-documents/
+https://www.mongodb.com/docs/manual/tutorial/model-embedded-one-to-many-relationships-between-documents/
+https://www.mongodb.com/docs/manual/tutorial/model-referenced-one-to-many-relationships-between-documents/
+tree structures
+  https://www.mongodb.com/docs/manual/tutorial/model-tree-structures-with-parent-references/
+      https://www.mongodb.com/docs/manual/reference/operator/aggregation/graphLookup/#mongodb-pipeline-pipe.-graphLookup
+  ...
+  https://www.mongodb.com/docs/manual/tutorial/model-tree-structures-with-nested-sets/
+
+https://www.mongodb.com/docs/manual/reference/database-references/
+    DBRef

db/nosql/mongo/features/schema-validation.txt

@@ -0,0 +1 @@
+https://www.mongodb.com/docs/manual/core/schema-validation/

db/nosql/mongo/features/search.txt

@@ -0,0 +1,17 @@
+coll
+    .find({"field1": "v1", ...}, {f1: 1, f2: 0}) // 2-nd - projection
+        .pretty()
+        .sort({keyfield: 1/-1, ...})
+            https://www.studytonight.com/mongodb/sorting-in-mongodb
+        skip(N).limit(M)
+        https://www.tutorialsteacher.com/mongodb/cursor
+        !!! cursor
+
+
+operators
+    {$gt: 75}
+    { $gte: new ISODate( "2020-01-30" ), $lt: new ISODate( "2022-01-30" ) }
+    field: {"$exists": false}
+
+???
+ cur = db.world.find();x=cur.next();print(x["speech"]);

db/nosql/mongo/features/transactions.txt

@@ -0,0 +1 @@
+https://www.mongodb.com/docs/manual/core/transactions/

db/nosql/mongo/features/update.txt

@@ -1,2 +1,25 @@
+https://www.mongodb.com/docs/manual/tutorial/update-documents-with-aggregation-pipeline/
+https://www.mongodb.com/docs/manual/reference/command/nav-crud/
+
+coll
+  .insertOne({...})
+  .insertMany([...])
+  .update,
+  .updateOne({"field": "...", ...}, [agg-pipeline])
+      https://www.mongodb.com/docs/manual/tutorial/update-documents-with-aggregation-pipeline/
+      $set: {"otherField": "otherVal"}
+  .updateMany
+  .replaceOne
+  .queryAndWrite(...)
+  .deleteOne
+  .deleteMany
+  .remove({filer})
+
+from-java-driver
+  https://www.mongodb.com/docs/drivers/java/sync/current/fundamentals/builders/updates/
+
 2022
 https://www.fosslinux.com/49919/update-existing-documents-mongodb.htm
+
+bulk
+https://www.mongodb.com/docs/drivers/java/sync/current/fundamentals/crud/write-operations/bulk/

db/nosql/mongo/java.txt

@@ -0,0 +1,67 @@
+https://www.mongodb.com/docs/drivers/java/sync/current/
+    https://www.mongodb.com/docs/drivers/reactive-streams/
+
+https://mongodb.github.io/mongo-java-driver/
+    https://mongodb.github.io/mongo-java-driver/4.10/
+    https://mongodb.github.io/mongo-java-driver/4.10/apidocs/
+
+
+https://central.sonatype.com/artifact/org.mongodb/mongodb-driver-sync
+https://github.com/mongodb/mongo-java-driver
+
+https://www.mongodb.com/docs/drivers/java/sync/current/quick-start/
+https://www.mongodb.com/docs/drivers/java/sync/current/quick-reference/
+    bulks, cursors
+https://www.mongodb.com/docs/drivers/java/sync/current/usage-examples/
+https://www.mongodb.com/docs/drivers/java/sync/current/fundamentals/
+https://www.mongodb.com/docs/drivers/java/sync/current/fundamentals/connection/
+https://www.mongodb.com/docs/drivers/java/sync/current/fundamentals/databases-collections/
+https://www.mongodb.com/docs/drivers/java/sync/current/fundamentals/data-formats/
+    https://www.mongodb.com/docs/drivers/java/sync/current/fundamentals/data-formats/document-data-format-extended-json/
+    https://www.mongodb.com/docs/drivers/java/sync/current/fundamentals/data-formats/documents/
+
+https://www.mongodb.com/docs/manual/reference/connection-string/
+
+https://www.mongodb.com/docs/drivers/java/sync/current/fundamentals/connection/
+https://www.mongodb.com/docs/drivers/java/sync/current/fundamentals/stable-api/
+    db.runCommand( { serverStatus: 1 } ).metrics.apiVersions
+    client = new MongoClient(uri, { serverApi: { version: '1', strict: true } });
+
+https://www.mongodb.com/docs/drivers/java/sync/current/fundamentals/crud/
+https://www.mongodb.com/docs/drivers/java/sync/current/fundamentals/crud/read-operations/
+https://www.mongodb.com/docs/drivers/java/sync/current/fundamentals/crud/read-operations/retrieve/
+https://www.mongodb.com/docs/drivers/java/sync/current/fundamentals/crud/read-operations/cursor/
+...
+https://www.mongodb.com/docs/drivers/java/sync/current/fundamentals/crud/query-document/
+
+https://www.mongodb.com/docs/drivers/java/sync/current/fundamentals/aggregation/
+    https://www.mongodb.com/docs/drivers/java/sync/current/fundamentals/builders/aggregates/
+
+https://www.mongodb.com/docs/drivers/java/sync/current/fundamentals/builders/
+    https://www.mongodb.com/docs/drivers/java/sync/current/fundamentals/builders/filters/
+    https://www.mongodb.com/docs/drivers/java/sync/current/fundamentals/builders/projections/
+    https://www.mongodb.com/docs/drivers/java/sync/current/fundamentals/builders/sort/
+    https://www.mongodb.com/docs/drivers/java/sync/current/fundamentals/builders/updates/
+    https://www.mongodb.com/docs/drivers/java/sync/current/fundamentals/builders/aggregates/
+    https://www.mongodb.com/docs/drivers/java/sync/current/fundamentals/builders/indexes/
+
+plan-explain
+https://www.mongodb.com/docs/drivers/java/sync/current/fundamentals/crud/read-operations/cursor/
+    https://www.mongodb.com/docs/manual/core/query-plans/
+    https://www.mongodb.com/docs/manual/reference/explain-results/
+
+pojo-cust-n
+https://www.mongodb.com/docs/drivers/java/sync/current/fundamentals/data-formats/pojo-customization/
+
+samples
+https://www.digitalocean.com/community/tutorials/mongodb-bulk-insert-insertmany
+https://www.digitalocean.com/community/tutorials/mongodb-tutorial
+
+api
+http://mongodb.github.io/mongo-java-driver/4.10/apidocs/mongodb-driver-core/com/mongodb/ReadConcern.html
+
+2015
+https://www.studytonight.com/mongodb/java-integration
+https://www.studytonight.com/mongodb/data-insertion-mongodb
+https://www.studytonight.com/mongodb/data-updation-mongodb
+https://www.studytonight.com/mongodb/retrieve-delete-mongodb

db/nosql/mongo/tools/compass.txt

@@ -1,5 +1,8 @@
-https://www.mongodb.com/try/download/compass
+https://www.mongodb.com/docs/compass/current/
 https://www.mongodb.com/docs/compass/current/install/
+https://www.mongodb.com/docs/compass/current/query/queries
+
+https://www.mongodb.com/try/download/compass
 
     MongoDB Command Line Database Tools Download available as well
 

db/nosql/mongo/tools/mongosh.txt

@@ -5,3 +5,5 @@ https://github.com/mongodb-js/mongosh
     sudo apt-get install mongodb-mongosh
     
     mongodb://<usr>:<pwd>@localhost:27017/test 
+
+https://www.mongodb.com/docs/manual/reference/method/

db/nosql/mongo/vscode.txt

@@ -0,0 +1 @@
+https://code.visualstudio.com/docs/azure/mongodb