what is the difference between insert and save in mongodb?
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Functionally, save and insert are very similar, especially if no _id value is passed. However, if an _id key is passed, save() will update the document, while insert() will throw a duplicate key error.
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PUT. The PUT method requests that the enclosed entity be stored under the supplied Request-URI. ... The fundamental difference between the POST and PUT requests is reflected in the different meaning of the Request-URI. The URI in a POST request identifies the resource that will handle the enclosed entity.
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Difference between save and saveOrUpdate in Hibernate The main difference between save and saveOrUpdate method is that save() generates a new identifier and INSERT record into the database while saveOrUpdate can either INSERT or UPDATE based upon the existence of a record.
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Yes, there is a difference. continue forces the loop to start at the next iteration while pass means "there is no code to execute here" and will continue through the remainder or the loop body.
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The main difference between update and append query is that the update query helps to modify the records of the table, while the append query helps to add data from one table to another. ... In overall, update and append are two queries the users can perform on Microsoft Access.
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['Open the edited document that you want to compare with the original document.', 'Select Edit > Compare Document.', 'An open document dialog appears. Select the original document and click Insert.']
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PUT is meant as a a method for "uploading" stuff to a particular URI, or overwriting what is already in that URI. POST, on the other hand, is a way of submitting data RELATED to a given URI. As far as i know, PUT is mostly used for update the records. PUT - To update the created document or any other resource.
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Basic difference between add() and replace() can be described as: add() is used for simply adding a fragment to some root element. replace() behaves similarly but at first it removes previous fragments and then adds next fragment.
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The difference is simple: COUNT(*) counts the number of rows produced by the query, whereas COUNT(1) counts the number of 1 values. ... If you use COUNT(column), the database must actually inspect the individual values in the column, since it will not count NULLs. Aggregate functions like COUNT and SUM always ignore NULLs.
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The following are some of the differences between find and where methods; find always uses the primary key by default to filter for records while where allows you to use any valid database field. ... find returns an object instance of the model while where which uses the get method returns a collection.
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Difference Between Save and Save As. The main difference between Save and Save As is that Save helps to update the lastly preserved file with the latest content while Save As helps to store a new file or to store an existing file to a new location with the same name or a different name.
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The difference between Save and Save As To do this, choose File Save (Ctrl+S) or click the Save button. The Save As dialog box will not open again. To prevent lost work, always save before closing your file. Save As lets you save an existing file under a new name, allowing you to create a new file.
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Use PUT when you want to modify a singular resource which is already a part of resources collection. PUT replaces the resource in its entirety. Use PATCH if request updates part of the resource. Use POST when you want to add a child resource under resources collection.
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SOQL has no equivalent INSERT, UPDATE, and DELETE statements. In the Salesforce world, data manipulation is handled using a set of methods known as DML (Data Manipulation Language). ... In SOQL, you specify each field name to return. Beyond that, the SELECT statement that SOQL provides is similar to SQL.
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The difference is that execute simply starts the task without any further ado, whereas submit returns a Future object to manage the task. You can do the following things with the Future object: Cancel the task prematurely, with the cancel method.
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As verbs the difference between keep and save is that keep is to maintain possession of while save is to help (somebody) to survive, or keep (somebody) from harm.
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Mongodb doesn't recognize Excel file directly . So first you have to convert your Excel file in CSV(Comma Separated Value) file and then import it to mongodb directly. Save given Excel file as a CSV file. i.e Goto File->Save As->example.