You can’t do this in a single query because MongoDB doesn’t support joins. Instead, you have to break it into a couple steps: // Get the _ids of people with the last name of Robertson. Person.find({lastname: ‘Robertson’}, {_id: 1}, function(err, docs) { // Map the docs into an array of just the _ids var ids … Read more
Consider the following dataframes df and df2 df = pd.DataFrame(dict( AUTHOR_NAME=list(‘AAABBCCCCDEEFGG’), title= list(‘zyxwvutsrqponml’) )) df2 = pd.DataFrame(dict( AUTHOR_NAME=list(‘AABCCEGG’), title =list(‘zwvtrpml’), CATEGORY =list(‘11223344′) )) option 1 merge df.merge(df2, how=’left’) option 2 join cols = [‘AUTHOR_NAME’, ‘title’] df.join(df2.set_index(cols), on=cols) both options yield
You might find it relevant. Here is a list of few other frameworks as of today: Well-known and respected: NBuilder AutoFixture AutoPoco(Discontinued / Deprecated) Bogus – C# port of faker.js with locale support. Used by Elasticsearch (NEST). Little-known: Hydrator Fabricator Unfamiliar: TestDataGenerator TestDataFactory (Discontinued) TestData Any-.Net
Or you can use the built-in Blue Bird Promise feature to make it. (Working on Sails@v0.10.5) See the codes below: var _ = require(‘lodash’); … Post .findOne(req.param(‘id’)) .populate(‘user’) .populate(‘comments’) .then(function(post) { var commentUsers = User.find({ id: _.pluck(post.comments, ‘user’) //_.pluck: Retrieves the value of a ‘user’ property from all elements in the post.comments collection. }) .then(function(commentUsers) … Read more
Try this: DROP PROCEDURE IF EXISTS filldates; DELIMITER | CREATE PROCEDURE filldates(dateStart DATE, dateEnd DATE) BEGIN WHILE dateStart <= dateEnd DO INSERT INTO tablename (_date) VALUES (dateStart); SET dateStart = date_add(dateStart, INTERVAL 1 DAY); END WHILE; END; | DELIMITER ; CALL filldates(‘2011-01-01′,’2011-12-31′); Here’s the SQL Fiddle to play with it: http://sqlfiddle.com/#!2/65d13/1 EDIT (to check if … Read more
Firstly, update mongoose 3 to 4 & then use the simplest way for deep population in mongoose as shown below: Suppose you have Blog schema having userId as ref Id & then in User you have some review as ref Id for schema Review. So Basically, you have three schemas: Blog User Review And, you … Read more
You should be able to use the Model’s populate function to do this: http://mongoosejs.com/docs/api.html#model_Model.populate In the save handler for book, instead of: book._creator = user; you’d do something like: Book.populate(book, {path:”_creator”}, function(err, book) { … }); Probably too late an answer to help you, but I was stuck on this recently, and it might be … Read more