jq Cheat Sheet/Merge objects

Combine two objects with later keys overwriting earlier ones.

Section: Arrays and Objects

Merge objects

bash
bash
jq -n '{name:"alice",age:30} + {age:31,city:"SF"}'
Explanation

The `+` operator merges objects shallowly.

Learn the surrounding workflow

Compare similar commands or jump into common fixes when this command is part of a bigger troubleshooting path.

Related commands

Same sheet · prioritizing Arrays and Objects
Sort array of objects by field
Order objects by a chosen property.
OpenIn sheetbashsame section
Group array items by field
Group objects into buckets by a property.
OpenIn sheetbashsame section
Build new object
Construct an object from selected fields.
OpenIn sheetbashsame section
Array length
Return the number of items in an array.
OpenIn sheetbashsame section
Map each item to a property
Transform an array of objects into one field per item.
OpenIn sheetbashsame section
Sum array values
Add all numbers in an array.
OpenIn sheetbashsame section