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How do I add a value to the top of an array in MongoDB?
To add a value to the top of an array in MongoDB, you can use unshift() −
yourArrayName.unshift("yourValue");The above syntax will add the value to the top of an array in MongoDB. Let us first create an array of strings −
> technicalSkills=["Java","MySQL","C","SQL SERVER","ORACLE","PL/SQL"];
This will produce the following output −
[ "Java", "MySQL", "C", "SQL SERVER", "ORACLE", "PL/SQL" ]
Following is the query to add to the top of an array in MongoDB. Here, we will add “MongoDB” to top of an array using unshift() −
> technicalSkills.unshift("MongoDB");
This will produce the following output −
7
Let us check the “MongoDB” has been added to top of an array or not. In order to display the array value, just write the array name at the console −
> technicalSkills
This will produce the following output −
[ "MongoDB", "Java", "MySQL", "C", "SQL SERVER", "ORACLE", "PL/SQL" ]
Updated on: 30-Jul-2019
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