json_unquote
Description
Syntax
VARCHAR json_unquote(VARCHAR)
This function unquotes a JSON value and returns the result as a utf8mb4 string. If the argument is NULL, it will return NULL.
Escape sequences within a string as shown in the following table will be recognized. Backslashes will be ignored for all other escape sequences.
| Escape Sequence | Character Represented by Sequence |
|---|---|
| " | A double quote (") character |
| \b | A backspace character |
| \f | A formfeed character |
| \n | A newline (linefeed) character |
| \r | A carriage return character |
| \t | A tab character |
| \ | A backslash () character |
| \uxxxx | UTF-8 bytes for Unicode value XXXX |
example
mysql> SELECT json_unquote('"doris"');
+-------------------------+
| json_unquote('"doris"') |
+-------------------------+
| doris |
+-------------------------+
mysql> SELECT json_unquote('[1, 2, 3]');
+---------------------------+
| json_unquote('[1, 2, 3]') |
+---------------------------+
| [1, 2, 3] |
+---------------------------+
mysql> SELECT json_unquote(null);
+--------------------+
| json_unquote(NULL) |
+--------------------+
| NULL |
+--------------------+
mysql> SELECT json_unquote('"\\ttest"');
+--------------------------+
| json_unquote('"\ttest"') |
+--------------------------+
| test |
+--------------------------+keywords
json,unquote,json_unquote