json_unquote

json_unquote

Description

Syntax

VARCHAR json_ununquote(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