SETINTERSECT (NoSQL query)

The SETINTERSECT function returns the set of expressions that is contained in both input arrays with no duplicates.

The SETINTERSECT function returns the set of expressions that exist in both input arrays, with no duplicates, in Azure Cosmos DB for NoSQL.

Syntax

SETINTERSECT(<array_expr_1>, <array_expr_2>)

Arguments

Return types

Returns an array of expressions.

Examples

This section contains examples of how to use this query language construct.

Intersect static arrays

In this example, the SETINTERSECT function is used with static arrays to demonstrate the intersect functionality.

SELECT VALUE {
  simpleIntersect: SETINTERSECT([1, 2, 3, 4], [3, 4, 5, 6]),
  emptyIntersect: SETINTERSECT([1, 2, 3, 4], []),
  duplicatesIntersect: SETINTERSECT([1, 2, 3, 4], [1, 1, 1, 1]),
  noMatchesIntersect: SETINTERSECT([1, 2, 3, 4], ["A", "B"]),
  unorderedIntersect: SETINTERSECT([1, 2, "A", "B"], ["A", 1])
}

[
  {
    "simpleIntersect": [3, 4],
    "emptyIntersect": [],
    "duplicatesIntersect": [1],
    "noMatchesIntersect": [],
    "unorderedIntersect": ["A", 1]
  }
]

Intersect array fields in documents

In this example, the SETINTERSECT function is used to find the intersection of two array fields in a document.

SELECT
    p.name,
    SETINTERSECT(p.colors, p.inStockColors) AS availableColors
FROM
    products p
WHERE
    p.category = "modern-vests"

[
  {
    "name": "Snowilla vest",
    "availableColors": ["Rhino", "Finch"]
  }
]

Remarks

• This function doesn't return duplicates.
• This function doesn't utilize the index.
• SKIP-VALIDATION