| title | titleSuffix | description | author | ms.author | ms.reviewer | ms.service | ms.subservice | ms.topic | ms.devlang | ms.date | ms.custom |
|---|---|---|---|---|---|---|---|---|---|---|---|
IS_STRING |
Azure Cosmos DB for NoSQL |
An Azure Cosmos DB for NoSQL system function that returns true if the type of the specified expression is a string. |
jcodella |
jacodel |
sidandrews |
cosmos-db |
nosql |
reference |
nosql |
02/27/2024 |
query-reference |
[!INCLUDENoSQL]
Returns a boolean value indicating if the type of the specified expression is a string.
IS_STRING(<expr>)
| Description | |
|---|---|
expr |
Any expression. |
Returns a boolean expression.
The following example various values to see if they're a string.
:::code language="nosql" source="~/cosmos-db-nosql-query-samples/scripts/is-string/query.sql" highlight="2-10":::
:::code language="json" source="~/cosmos-db-nosql-query-samples/scripts/is-string/result.json":::
- This function benefits from a range index.