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Extract values with escaped characters from JSON Document

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I am using the json_value function to extract values from a json document passed to a Mariadb database. When the document contains name/value pairs with escaped values such as "Item_Name":"60
" Table" the function only extracts 60 and returns null values for the rest of the name/value pairs in the document. Here is an example

``` Set @json = '{"Item_Name":"60\" Table", "Item_ID":"1"}';

select json_value(@json,'$.Item_Name') as Item_Name , json_value(@json,'$.Item_ID') as ID ```

The results of this query is:

Item_NameID
:----------:----
60null

Not sure how to extract the value with the escaped character.

Answer

You need to use two escape characters. A single escape would be applied by the SQL parser, but you want to pass the escaped string down. So:

Set @json = '{"Item_Name":"60\\" Table", "Item_ID":"1"}';

select json_value(@json,'$.Item_Name') as Item_Name , json_value(@json,'$.Item_ID') as ID;
+-----------+------+
| Item_Name | ID   |
+-----------+------+
| 60" Table | 1    |
+-----------+------+

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