Laravel mongoDB groupBy - ERROR: Unrecognized expression '$last' - mongodb

My below code is producing an error. If the groupBy is removed it works fine. But I only need to get distinct values for common_id. How can i solve this issue?
MasterAffiliateProductMappingMongo::select('_id', 'our_product_id')
->where('top_deal', '=', 'true')
->orderBy('srp', 'asc')
->groupBy('common_id')
->get();
Error: [MongoDB\Driver\Exception\RuntimeException] Unrecognized
expression '$last'
MongoDocument Example:
{
"_id" : ObjectId("5911af8209ed4456d069b1d1"),
"product_id" : "MOBDRYWXFKNPZVG6",
"our_product_id" : "5948e0dca6bc725adb35af2e",
"mrp" : 0.0,
"srp" : 500.0,
"ID" : "5911af8209ed4456d069b1d1",
"common_id" : ObjectId("5911af8209ed4456d069b1d1"),
"top_deal" : "true"
}
Error Log:
[2017-06-28 12:19:46] lumen.ERROR: exception
'MongoDB\Driver\Exception\RuntimeException' with message 'Unrecognized
expression '$last'' in
/var/www/html/PaymetryService4/vendor/mongodb/mongodb/src/Operation/Aggregate.php:219


Refer to this link https://github.com/jenssegers/laravel-mongodb/issues/1185#issuecomment-321267144 it works. We should remove '_id' from the select field.

Related

when i try to run the updateOne method in mongoDB , i get this error uncaught exception: SyntaxError: illegal character :

The Query:
db.products.updateOne(
{"name":"pen"},
{$set : { "stock" : 32}},
)
I got this error:
uncaught exception: SyntaxError: illegal character :

Try to change $set with "$set". Also, enter the code in the question instead of putting images.

Meteor MongoDB Error

I have this issue with my meteor app. When I run this query on my chrome console, It returns the expected data
Questions.find({}, {sort:{commentLength: -1}})
but when I run it in the console as db.questions.find({}, {sort:{commentLength: -1}})
it returns this error
error: {
"$err" : "Can't canonicalize query: BadValue Unsupported projection option: sort: { commentLength: -1.0 }",
"code" : 17287
}
Why does this error happen? Thanks

sort has a different syntax when executed in a mongodb shell. Try this instead:
db.questions.find().sort({commentLength: -1})

Json to csv in Mongodb

I know this question has been answered... using below
print("name,id,email");
db.User.find().forEach(function(user){
print(user.name+","+user._id.valueOf()+","+user.email);
});
But I am facing issue while reading the records whose fields start with number.
Below is the O/P
db.Detail.find({"Comment": /ABCD/,"CreateDt": { "$gte" : ISODate("2015-12-03") }},{'Data.01-WaitQueue.EndTime':1}).limit().pretty()
{
"Data" : {
"01-WaitQueue" : {
"EndTime" : ISODate("2015-12-03T02:39:11Z")
}
},
"_id" : ObjectId("565fab4ea5c75a3c4f000000")
}
When I am using forEach to convert into CSV
db.Detail.find({"Comment": /ABCD/,"CreateDt": { "$gte" : ISODate("2015-12-03") }},{'Data.01-WaitQueue.EndTime':1}).limit().forEach(function(PD) {
print(PD.Data.01-WaitQueue.EndTime +":"+ PD._id);
});
I am getting below error
Fri Dec 4 07:11:38 SyntaxError: missing ) after argument list (shell):1
Can someone please help me in rectifying it?

The exception is thrown because of the print line has syntax error.
Instead of
print(PD.Data.01-WaitQueue.EndTime +":"+ PD._id);
Try this instead:
print(PD.Data['01-WaitQueue'].EndTime +":"+ PD._id);

While saving a collection MongoDB is creating Index name which is too long and exceeds 127 bytes limit. How to solve this. can i disable indexing?

com.mongodb.CommandFailureException: { "serverUsed" : "localhost:27017" , "createdCollectionAutomatically" : true , "numIndexesBefore" : 1 , "ok" : 0.0 , "errmsg" : "namespace name generated from index name \"NDS.ABCD_pre_import.$importabilityEvaluations.perNameResults.straightImportResults.resultPolContent_NOT_IN_CURRENT_USE.officialPolResultNameContentId\" is too long (127 byte max)" , "code" : 67}
at com.mongodb.CommandResult.getException(CommandResult.java:76)
at com.mongodb.CommandResult.throwOnError(CommandResult.java:131)
at com.mongodb.DBCollectionImpl.createIndex(DBCollectionImpl.java:362)
at com.mongodb.DBCollection.createIndex(DBCollection.java:563)
at org.springframework.data.mongodb.core.index.MongoPersistentEntityIndexCreator.createIndex(MongoPersistentEntityIndexCreator.java:136)
at org.springframework.data.mongodb.core.index.MongoPersistentEntityIndexCreator.checkForAndCreateIndexes(MongoPersistentEntityIndexCreator.java:129)
at org.springframework.data.mongodb.core.index.MongoPersistentEntityIndexCreator.checkForIndexes(MongoPersistentEntityIndexCreator.java:121)
at org.springframework.data.mongodb.core.index.MongoPersistentEntityIndexCreator.onApplicationEvent(MongoPersistentEntityIndexCreator.java:105)
at org.springframework.data.mongodb.core.index.MongoMappingEventPublisher.publishEvent(MongoMappingEventPublisher.java:60)
at org.springframework.data.mapping.context.AbstractMappingContext.addPersistentEntity(AbstractMappingContext.java:306)
at org.springframework.data.mapping.context.AbstractMappingContext.getPersistentEntity(AbstractMappingContext.java:180)
at org.springframework.data.mapping.context.AbstractMappingContext.getPersistentEntity(AbstractMappingContext.java:140)
at org.springframework.data.mapping.context.AbstractMappingContext.getPersistentEntity(AbstractMappingContext.java:67)
at org.springframework.data.mongodb.core.MongoTemplate.determineCollectionName(MongoTemplate.java:1881)
at org.springframework.data.mongodb.core.MongoTemplate.determineEntityCollectionName(MongoTemplate.java:1868)
at org.springframework.data.mongodb.core.MongoTemplate.save(MongoTemplate.java:825)

You can pass an index name as parameter to ensureIndex:
db.collection.ensureIndex({"birds.parrots.macaw.blue.id": 1}, {name:"myIndex1"});
db.collection.ensureIndex({"birds.parrots.macaw.blue.id": 1, "field2": 1}, {name:"myIndex1"});

record my case for other refer:
my case: code
indexKeyList = [
("shortLink", pymongo.ASCENDING),
("parsedLink.isParseOk", pymongo.ASCENDING),
("parsedLink.errType", pymongo.ASCENDING),
("parsedGame.realGameName", pymongo.ASCENDING),
("parsedGame.gameTheme", pymongo.ASCENDING),
]
mongoCollectionShortlink.create_index(indexKeyList)
report error:
发生异常: OperationFailure
namespace name generated from index name "shortLink.gameShortLink.$shortLink_1_parsedLink.isParseOk_1_parsedLink.errType_1_parsedGame.realGameName_1_parsedGame.gameTheme_1" is too long (127 byte max), full error: {'ok': 0.0, 'errmsg': 'namespace name generated from index name "shortLink.gameShortLink.$shortLink_1_parsedLink.isParseOk_1_parsedLink.errType_1_parsedGame.realGameName_1_parsedGame.gameTheme_1" is too long (127 byte max)', 'code': 67, 'codeName': 'CannotCreateIndex'}
root cause: use create_index to create multiple index. then multiple index name joined together, cause name too long, exceed 127 byte limit
Solution: should use create_indexes
import pymongo
from pymongo import IndexModel
indexShortLink = IndexModel([("shortLink", pymongo.ASCENDING)], name="shortLink")
indexIsParseOk = IndexModel([("parsedLink.isParseOk", pymongo.ASCENDING)], name="parsedLink_isParseOk")
indexErrType = IndexModel([("parsedLink.errType", pymongo.ASCENDING)], name="parsedLink_errType")
indexRealGameName = IndexModel([("parsedGame.realGameName", pymongo.ASCENDING)], name="parsedGame_realGameName")
indexGameTheme = IndexModel([("parsedGame.gameTheme", pymongo.ASCENDING)], name="parsedGame_gameTheme")
indexModelList = [
indexShortLink,
indexIsParseOk,
indexErrType,
indexRealGameName,
indexGameTheme,
]
mongoCollectionShortlink.create_indexes(indexModelList)

You can not disable indexing as MongoDB will always create an index for _id. Shorten your collection name instead - saves you some typing too

db.printCollectionStats() error

I am getting the following error when I run:
db.printCollectionStats()
error: {
"$err" : "stale config on lazy receive :: caused by :: $err: \"[myzips.zips] shard version not ok in Client::Context: this shard contains versioned chunks for myzips.zips, but no version set in request ( ns : myzips.zip...\" ( ns : myzips.zips, received : 0|0||000000000000000000000000, wanted : 1|1||50fdd55b14faa2aa46422a7a, recv )",
"code" : 9996
} at src/mongo/shell/query.js:128
what does this mean?