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add mongodb update operators for arrays

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Marcello 2023-11-30 12:31:41 +01:00
parent 2543270eed
commit c0b12ea705
1 changed files with 6 additions and 2 deletions
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8
docs/databases/mongo-db.md
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@ -40,9 +40,13 @@ db.<collection>.insertOne({document}) # implicit collection creation
```json linenums="1"
/* --- Update operators --- */
{ "$inc": { "<key>": "<increment>", ... } } // Increment value
{ "$set": { "<key>": "<value>", ... } } // Set value
{ "$inc": { "<key>": "<increment>", ... } } // increment value
{ "$set": { "<key>": "<value>", ... } } // set value
{ "$unsetset": { "<key>": "true", ... } } // unset value
{ "$push": { "<key>": "<value>", ... } } // add a value to an array field or turn field into array
{ "$pop": { "<key>": <-1 | 1>, ... } } // remove first or last array element
{ "$pull": { "<key>": "<value | condition>", ... } } // remove a specific item in the array
{ "$pullAll": { "<key>": [ "<value1>", "<value2>" ... ], ... } } // remove all specified values from array
/* --- Query Operators --- */
{ "<key>": { "$in": [ "<value_1>", "<value_2>", ...] } } // Membership