Array sort by struct key

Supported in: Batch, Streaming

Returns a sorted array of the given input array of structs sorted by the values of the given struct keys.

Expression categories: Array

Declared arguments

• Input array - Input array of structs to be sorted.
  Expression<Array<Struct>>
• Sort keys - Struct keys to sort array by in order of sort priority. Sort nested struct elements with multiple entries like ['author', 'age'].
  List<Tuple<StructLocator, Enum<Ascending, Descending>>>

Output type: Array<Struct>

Examples

Example 1: Base case

Argument values:

• Input array: [ {
   age: 20,
  }, {
   age: 10,
  }, {
   age: 30,
  } ]
• Sort keys: [(age, ASCENDING)]

Output: [ {
 age: 10,
}, {
 age: 20,
}, {
 age: 30,
} ]

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Example 2: Base case

Argument values:

• Input array: [ {
   age: 20,
  }, {
   age: 10,
  }, {
   age: 30,
  } ]
• Sort keys: [(age, DESCENDING)]

Output: [ {
 age: 30,
}, {
 age: 20,
}, {
 age: 10,
} ]

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Example 3: Base case

Argument values:

• Input array: [ {
   age: 20,
   height: 77,
  }, {
   age: 20,
   height...
• Sort keys: [(age, ASCENDING), (height, DESCENDING)]

Output: [ {
 age: 10,
 height: 80,
}, {
 age: 10,
 height...

---

Example 4: Base case

Argument values:

• Input array: [ {
   age: 20,
   height: 77,
  }, {
   age: 20,
   height...
• Sort keys: [(age, ASCENDING), (height, ASCENDING)]

Output: [ {
 age: 10,
 height: 65,
}, {
 age: 10,
 height...

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Example 5: Base case

Argument values:

• Input array: [ {
   subStructKey: {
   age: 20,
  },
  }, {
   subStructKey: {
   age: 10,
  },
  }, {
   subStructKey: {
   age: 30,
  },
  } ]
• Sort keys: [(subStructKey.age, ASCENDING)]

Output: [ {
 subStructKey: {
 age: 10,
},
}, {
 subStructKey: {
 age: 20,
},
}, {
 subStructKey: {
 age: 30,
},
} ]

---

Example 6: Null case

Argument values:

• Input array: [ {
   age: 10,
  }, {
   age: null,
  }, {
   age: 30,
  } ]
• Sort keys: [(age, ASCENDING)]

Output: [ {
 age: null,
}, {
 age: 10,
}, {
 age: 30,
} ]

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Example 7: Null case

Argument values:

• Input array: [ {
   age: 10,
  }, {
   age: null,
  }, {
   age: 30,
  } ]
• Sort keys: [(age, DESCENDING)]

Output: [ {
 age: 30,
}, {
 age: 10,
}, {
 age: null,
} ]

---