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|
-- Strings.
SELECT '""'::json; -- OK.
json
------
""
(1 row)
SELECT $$''$$::json; -- ERROR, single quotes are not allowed
ERROR: invalid input syntax for type json
LINE 1: SELECT $$''$$::json;
^
DETAIL: line 1: Token "'" is invalid.
SELECT '"abc"'::json; -- OK
json
-------
"abc"
(1 row)
SELECT '"abc'::json; -- ERROR, quotes not closed
ERROR: invalid input syntax for type json
LINE 1: SELECT '"abc'::json;
^
DETAIL: line 1: Token ""abc" is invalid.
SELECT '"abc
def"'::json; -- ERROR, unescaped newline in string constant
ERROR: invalid input syntax for type json
LINE 1: SELECT '"abc
^
DETAIL: line 1: Character "
" must be escaped.
SELECT '"\n\"\\"'::json; -- OK, legal escapes
json
----------
"\n\"\\"
(1 row)
SELECT '"\v"'::json; -- ERROR, not a valid JSON escape
ERROR: invalid input syntax for type json
LINE 1: SELECT '"\v"'::json;
^
DETAIL: line 1: Invalid escape "\v".
SELECT '"\u"'::json; -- ERROR, incomplete escape
ERROR: invalid input syntax for type json
LINE 1: SELECT '"\u"'::json;
^
DETAIL: line 1: "\u" must be followed by four hexadecimal digits.
SELECT '"\u00"'::json; -- ERROR, incomplete escape
ERROR: invalid input syntax for type json
LINE 1: SELECT '"\u00"'::json;
^
DETAIL: line 1: "\u" must be followed by four hexadecimal digits.
SELECT '"\u000g"'::json; -- ERROR, g is not a hex digit
ERROR: invalid input syntax for type json
LINE 1: SELECT '"\u000g"'::json;
^
DETAIL: line 1: "\u" must be followed by four hexadecimal digits.
SELECT '"\u0000"'::json; -- OK, legal escape
json
----------
"\u0000"
(1 row)
SELECT '"\uaBcD"'::json; -- OK, uppercase and lower case both OK
json
----------
"\uaBcD"
(1 row)
-- Numbers.
SELECT '1'::json; -- OK
json
------
1
(1 row)
SELECT '0'::json; -- OK
json
------
0
(1 row)
SELECT '01'::json; -- ERROR, not valid according to JSON spec
ERROR: invalid input syntax for type json
LINE 1: SELECT '01'::json;
^
DETAIL: line 1: Token "01" is invalid.
SELECT '0.1'::json; -- OK
json
------
0.1
(1 row)
SELECT '9223372036854775808'::json; -- OK, even though it's too large for int8
json
---------------------
9223372036854775808
(1 row)
SELECT '1e100'::json; -- OK
json
-------
1e100
(1 row)
SELECT '1.3e100'::json; -- OK
json
---------
1.3e100
(1 row)
SELECT '1f2'::json; -- ERROR
ERROR: invalid input syntax for type json
LINE 1: SELECT '1f2'::json;
^
DETAIL: line 1: Token "1f2" is invalid.
-- Arrays.
SELECT '[]'::json; -- OK
json
------
[]
(1 row)
SELECT '[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]'::json; -- OK
json
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]
(1 row)
SELECT '[1,2]'::json; -- OK
json
-------
[1,2]
(1 row)
SELECT '[1,2,]'::json; -- ERROR, trailing comma
ERROR: invalid input syntax for type json: "[1,2,]"
LINE 1: SELECT '[1,2,]'::json;
^
DETAIL: line 1: Expected string, number, object, array, true, false, or null, but found "]".
SELECT '[1,2'::json; -- ERROR, no closing bracket
ERROR: invalid input syntax for type json: "[1,2"
LINE 1: SELECT '[1,2'::json;
^
DETAIL: The input string ended unexpectedly.
SELECT '[1,[2]'::json; -- ERROR, no closing bracket
ERROR: invalid input syntax for type json: "[1,[2]"
LINE 1: SELECT '[1,[2]'::json;
^
DETAIL: The input string ended unexpectedly.
-- Objects.
SELECT '{}'::json; -- OK
json
------
{}
(1 row)
SELECT '{"abc"}'::json; -- ERROR, no value
ERROR: invalid input syntax for type json: "{"abc"}"
LINE 1: SELECT '{"abc"}'::json;
^
DETAIL: line 1: Expected ":", but found "}".
SELECT '{"abc":1}'::json; -- OK
json
-----------
{"abc":1}
(1 row)
SELECT '{1:"abc"}'::json; -- ERROR, keys must be strings
ERROR: invalid input syntax for type json: "{1:"abc"}"
LINE 1: SELECT '{1:"abc"}'::json;
^
DETAIL: line 1: Expected string or "}", but found "1".
SELECT '{"abc",1}'::json; -- ERROR, wrong separator
ERROR: invalid input syntax for type json: "{"abc",1}"
LINE 1: SELECT '{"abc",1}'::json;
^
DETAIL: line 1: Expected ":", but found ",".
SELECT '{"abc"=1}'::json; -- ERROR, totally wrong separator
ERROR: invalid input syntax for type json
LINE 1: SELECT '{"abc"=1}'::json;
^
DETAIL: line 1: Token "=" is invalid.
SELECT '{"abc"::1}'::json; -- ERROR, another wrong separator
ERROR: invalid input syntax for type json: "{"abc"::1}"
LINE 1: SELECT '{"abc"::1}'::json;
^
DETAIL: line 1: Expected string, number, object, array, true, false, or null, but found ":".
SELECT '{"abc":1,"def":2,"ghi":[3,4],"hij":{"klm":5,"nop":[6]}}'::json; -- OK
json
---------------------------------------------------------
{"abc":1,"def":2,"ghi":[3,4],"hij":{"klm":5,"nop":[6]}}
(1 row)
SELECT '{"abc":1:2}'::json; -- ERROR, colon in wrong spot
ERROR: invalid input syntax for type json: "{"abc":1:2}"
LINE 1: SELECT '{"abc":1:2}'::json;
^
DETAIL: line 1: Expected "," or "}", but found ":".
SELECT '{"abc":1,3}'::json; -- ERROR, no value
ERROR: invalid input syntax for type json: "{"abc":1,3}"
LINE 1: SELECT '{"abc":1,3}'::json;
^
DETAIL: line 1: Expected string, but found "3".
-- Miscellaneous stuff.
SELECT 'true'::json; -- OK
json
------
true
(1 row)
SELECT 'false'::json; -- OK
json
-------
false
(1 row)
SELECT 'null'::json; -- OK
json
------
null
(1 row)
SELECT ' true '::json; -- OK, even with extra whitespace
json
--------
true
(1 row)
SELECT 'true false'::json; -- ERROR, too many values
ERROR: invalid input syntax for type json: "true false"
LINE 1: SELECT 'true false'::json;
^
DETAIL: line 1: Expected end of input, but found "false".
SELECT 'true, false'::json; -- ERROR, too many values
ERROR: invalid input syntax for type json: "true, false"
LINE 1: SELECT 'true, false'::json;
^
DETAIL: line 1: Expected end of input, but found ",".
SELECT 'truf'::json; -- ERROR, not a keyword
ERROR: invalid input syntax for type json
LINE 1: SELECT 'truf'::json;
^
DETAIL: line 1: Token "truf" is invalid.
SELECT 'trues'::json; -- ERROR, not a keyword
ERROR: invalid input syntax for type json
LINE 1: SELECT 'trues'::json;
^
DETAIL: line 1: Token "trues" is invalid.
SELECT ''::json; -- ERROR, no value
ERROR: invalid input syntax for type json: ""
LINE 1: SELECT ''::json;
^
DETAIL: The input string ended unexpectedly.
SELECT ' '::json; -- ERROR, no value
ERROR: invalid input syntax for type json: " "
LINE 1: SELECT ' '::json;
^
DETAIL: The input string ended unexpectedly.
|
