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Accepts a JSON document and pointer expression. If the key exists and the value is a JSON string, JSON_POINTER_EXTRACT_TEXT returns it as SQL TEXT, removing outer quotes and decoding characters. Otherwise, it returns NULL.

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Syntax

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Parameters

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Return Type

TEXT
  • If any input values are NULL, the function will return NULL.

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Examples

Example The following code example extracts the value at path /value/uid from the JSON document, removes the outermost quotes, and returns the result as SQL TEXT:

Rows: 1Execution time: 5.57ms

Example The following code example attempts to extract the value at the path /value/no_such_key from the JSON document and returns NULL because the key does not exist:

Rows: 1Execution time: 7.32ms

Example The following code example attempts to extract the value at the path /value/code from the JSON document and returns NULL because the value at the specified path is an integer, not a string:

Rows: 1Execution time: 8.20ms

Example The following code example navigates to the third element at index 2 of the array at /value/keywords in the JSON document, removes the outermost quotes, and returns it as SQL TEXT:

Rows: 1Execution time: 4.60ms