431 lines
16 KiB
SQL
431 lines
16 KiB
SQL
-- Strings.
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SELECT '""'::json; -- OK.
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SELECT $$''$$::json; -- ERROR, single quotes are not allowed
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SELECT '"abc"'::json; -- OK
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SELECT '"abc'::json; -- ERROR, quotes not closed
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SELECT '"abc
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def"'::json; -- ERROR, unescaped newline in string constant
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SELECT '"\n\"\\"'::json; -- OK, legal escapes
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SELECT '"\v"'::json; -- ERROR, not a valid JSON escape
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SELECT '"\u"'::json; -- ERROR, incomplete escape
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SELECT '"\u00"'::json; -- ERROR, incomplete escape
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SELECT '"\u000g"'::json; -- ERROR, g is not a hex digit
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SELECT '"\u0000"'::json; -- OK, legal escape
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SELECT '"\uaBcD"'::json; -- OK, uppercase and lower case both OK
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-- Numbers.
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SELECT '1'::json; -- OK
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SELECT '0'::json; -- OK
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SELECT '01'::json; -- ERROR, not valid according to JSON spec
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SELECT '0.1'::json; -- OK
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SELECT '9223372036854775808'::json; -- OK, even though it's too large for int8
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SELECT '1e100'::json; -- OK
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SELECT '1.3e100'::json; -- OK
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SELECT '1f2'::json; -- ERROR
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SELECT '0.x1'::json; -- ERROR
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SELECT '1.3ex100'::json; -- ERROR
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-- Arrays.
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SELECT '[]'::json; -- OK
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SELECT '[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]'::json; -- OK
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SELECT '[1,2]'::json; -- OK
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SELECT '[1,2,]'::json; -- ERROR, trailing comma
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SELECT '[1,2'::json; -- ERROR, no closing bracket
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SELECT '[1,[2]'::json; -- ERROR, no closing bracket
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-- Objects.
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SELECT '{}'::json; -- OK
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SELECT '{"abc"}'::json; -- ERROR, no value
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SELECT '{"abc":1}'::json; -- OK
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SELECT '{1:"abc"}'::json; -- ERROR, keys must be strings
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SELECT '{"abc",1}'::json; -- ERROR, wrong separator
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SELECT '{"abc"=1}'::json; -- ERROR, totally wrong separator
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SELECT '{"abc"::1}'::json; -- ERROR, another wrong separator
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SELECT '{"abc":1,"def":2,"ghi":[3,4],"hij":{"klm":5,"nop":[6]}}'::json; -- OK
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SELECT '{"abc":1:2}'::json; -- ERROR, colon in wrong spot
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SELECT '{"abc":1,3}'::json; -- ERROR, no value
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-- Miscellaneous stuff.
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SELECT 'true'::json; -- OK
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SELECT 'false'::json; -- OK
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SELECT 'null'::json; -- OK
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SELECT ' true '::json; -- OK, even with extra whitespace
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SELECT 'true false'::json; -- ERROR, too many values
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SELECT 'true, false'::json; -- ERROR, too many values
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SELECT 'truf'::json; -- ERROR, not a keyword
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SELECT 'trues'::json; -- ERROR, not a keyword
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SELECT ''::json; -- ERROR, no value
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SELECT ' '::json; -- ERROR, no value
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--constructors
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-- array_to_json
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SELECT array_to_json(array(select 1 as a));
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SELECT array_to_json(array_agg(q),false) from (select x as b, x * 2 as c from generate_series(1,3) x) q;
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SELECT array_to_json(array_agg(q),true) from (select x as b, x * 2 as c from generate_series(1,3) x) q;
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SELECT array_to_json(array_agg(q),false)
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FROM ( SELECT $$a$$ || x AS b, y AS c,
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ARRAY[ROW(x.*,ARRAY[1,2,3]),
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ROW(y.*,ARRAY[4,5,6])] AS z
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FROM generate_series(1,2) x,
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generate_series(4,5) y) q;
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SELECT array_to_json(array_agg(x),false) from generate_series(5,10) x;
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SELECT array_to_json('{{1,5},{99,100}}'::int[]);
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-- row_to_json
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SELECT row_to_json(row(1,'foo'));
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SELECT row_to_json(q)
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FROM (SELECT $$a$$ || x AS b,
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y AS c,
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ARRAY[ROW(x.*,ARRAY[1,2,3]),
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ROW(y.*,ARRAY[4,5,6])] AS z
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FROM generate_series(1,2) x,
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generate_series(4,5) y) q;
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SELECT row_to_json(q,true)
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FROM (SELECT $$a$$ || x AS b,
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y AS c,
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ARRAY[ROW(x.*,ARRAY[1,2,3]),
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ROW(y.*,ARRAY[4,5,6])] AS z
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FROM generate_series(1,2) x,
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generate_series(4,5) y) q;
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CREATE TEMP TABLE rows AS
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SELECT x, 'txt' || x as y
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FROM generate_series(1,3) AS x;
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SELECT row_to_json(q,true)
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FROM rows q;
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SELECT row_to_json(row((select array_agg(x) as d from generate_series(5,10) x)),false);
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--json_agg
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SELECT json_agg(q)
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FROM ( SELECT $$a$$ || x AS b, y AS c,
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ARRAY[ROW(x.*,ARRAY[1,2,3]),
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ROW(y.*,ARRAY[4,5,6])] AS z
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FROM generate_series(1,2) x,
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generate_series(4,5) y) q;
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SELECT json_agg(q)
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FROM rows q;
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-- non-numeric output
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SELECT row_to_json(q)
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FROM (SELECT 'NaN'::float8 AS "float8field") q;
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SELECT row_to_json(q)
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FROM (SELECT 'Infinity'::float8 AS "float8field") q;
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SELECT row_to_json(q)
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FROM (SELECT '-Infinity'::float8 AS "float8field") q;
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-- json input
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SELECT row_to_json(q)
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FROM (SELECT '{"a":1,"b": [2,3,4,"d","e","f"],"c":{"p":1,"q":2}}'::json AS "jsonfield") q;
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-- json extraction functions
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CREATE TEMP TABLE test_json (
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json_type text,
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test_json json
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);
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INSERT INTO test_json VALUES
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('scalar','"a scalar"'),
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('array','["zero", "one","two",null,"four","five", [1,2,3],{"f1":9}]'),
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('object','{"field1":"val1","field2":"val2","field3":null, "field4": 4, "field5": [1,2,3], "field6": {"f1":9}}');
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SELECT test_json -> 'x'
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FROM test_json
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WHERE json_type = 'scalar';
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SELECT test_json -> 'x'
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FROM test_json
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WHERE json_type = 'array';
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SELECT test_json -> 'x'
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FROM test_json
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WHERE json_type = 'object';
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SELECT test_json->'field2'
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FROM test_json
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WHERE json_type = 'object';
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SELECT test_json->>'field2'
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FROM test_json
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WHERE json_type = 'object';
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SELECT test_json -> 2
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FROM test_json
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WHERE json_type = 'scalar';
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SELECT test_json -> 2
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FROM test_json
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WHERE json_type = 'array';
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SELECT test_json -> 2
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FROM test_json
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WHERE json_type = 'object';
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SELECT test_json->>2
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FROM test_json
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WHERE json_type = 'array';
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SELECT test_json ->> 6 FROM test_json WHERE json_type = 'array';
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SELECT test_json ->> 7 FROM test_json WHERE json_type = 'array';
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SELECT test_json ->> 'field4' FROM test_json WHERE json_type = 'object';
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SELECT test_json ->> 'field5' FROM test_json WHERE json_type = 'object';
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SELECT test_json ->> 'field6' FROM test_json WHERE json_type = 'object';
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SELECT json_object_keys(test_json)
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FROM test_json
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WHERE json_type = 'scalar';
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SELECT json_object_keys(test_json)
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FROM test_json
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WHERE json_type = 'array';
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SELECT json_object_keys(test_json)
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FROM test_json
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WHERE json_type = 'object';
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-- test extending object_keys resultset - initial resultset size is 256
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select count(*) from
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(select json_object_keys(json_object(array_agg(g)))
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from (select unnest(array['f'||n,n::text])as g
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from generate_series(1,300) as n) x ) y;
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-- nulls
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select (test_json->'field3') is null as expect_false
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from test_json
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where json_type = 'object';
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select (test_json->>'field3') is null as expect_true
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from test_json
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where json_type = 'object';
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select (test_json->3) is null as expect_false
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from test_json
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where json_type = 'array';
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select (test_json->>3) is null as expect_true
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from test_json
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where json_type = 'array';
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-- array length
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SELECT json_array_length('[1,2,3,{"f1":1,"f2":[5,6]},4]');
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SELECT json_array_length('[]');
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SELECT json_array_length('{"f1":1,"f2":[5,6]}');
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SELECT json_array_length('4');
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-- each
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select json_each('{"f1":[1,2,3],"f2":{"f3":1},"f4":null}');
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select * from json_each('{"f1":[1,2,3],"f2":{"f3":1},"f4":null,"f5":99,"f6":"stringy"}') q;
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select json_each_text('{"f1":[1,2,3],"f2":{"f3":1},"f4":null,"f5":"null"}');
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select * from json_each_text('{"f1":[1,2,3],"f2":{"f3":1},"f4":null,"f5":99,"f6":"stringy"}') q;
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-- extract_path, extract_path_as_text
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select json_extract_path('{"f2":{"f3":1},"f4":{"f5":99,"f6":"stringy"}}','f4','f6');
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select json_extract_path('{"f2":{"f3":1},"f4":{"f5":99,"f6":"stringy"}}','f2');
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select json_extract_path('{"f2":["f3",1],"f4":{"f5":99,"f6":"stringy"}}','f2',0::text);
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select json_extract_path('{"f2":["f3",1],"f4":{"f5":99,"f6":"stringy"}}','f2',1::text);
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select json_extract_path_text('{"f2":{"f3":1},"f4":{"f5":99,"f6":"stringy"}}','f4','f6');
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select json_extract_path_text('{"f2":{"f3":1},"f4":{"f5":99,"f6":"stringy"}}','f2');
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select json_extract_path_text('{"f2":["f3",1],"f4":{"f5":99,"f6":"stringy"}}','f2',0::text);
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select json_extract_path_text('{"f2":["f3",1],"f4":{"f5":99,"f6":"stringy"}}','f2',1::text);
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-- extract_path nulls
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select json_extract_path('{"f2":{"f3":1},"f4":{"f5":null,"f6":"stringy"}}','f4','f5') is null as expect_false;
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select json_extract_path_text('{"f2":{"f3":1},"f4":{"f5":null,"f6":"stringy"}}','f4','f5') is null as expect_true;
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select json_extract_path('{"f2":{"f3":1},"f4":[0,1,2,null]}','f4','3') is null as expect_false;
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select json_extract_path_text('{"f2":{"f3":1},"f4":[0,1,2,null]}','f4','3') is null as expect_true;
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-- extract_path operators
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select '{"f2":{"f3":1},"f4":{"f5":99,"f6":"stringy"}}'::json#>array['f4','f6'];
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select '{"f2":{"f3":1},"f4":{"f5":99,"f6":"stringy"}}'::json#>array['f2'];
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select '{"f2":["f3",1],"f4":{"f5":99,"f6":"stringy"}}'::json#>array['f2','0'];
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select '{"f2":["f3",1],"f4":{"f5":99,"f6":"stringy"}}'::json#>array['f2','1'];
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select '{"f2":{"f3":1},"f4":{"f5":99,"f6":"stringy"}}'::json#>>array['f4','f6'];
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select '{"f2":{"f3":1},"f4":{"f5":99,"f6":"stringy"}}'::json#>>array['f2'];
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select '{"f2":["f3",1],"f4":{"f5":99,"f6":"stringy"}}'::json#>>array['f2','0'];
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select '{"f2":["f3",1],"f4":{"f5":99,"f6":"stringy"}}'::json#>>array['f2','1'];
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-- same using array literals
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select '{"f2":{"f3":1},"f4":{"f5":99,"f6":"stringy"}}'::json#>'{f4,f6}';
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select '{"f2":{"f3":1},"f4":{"f5":99,"f6":"stringy"}}'::json#>'{f2}';
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select '{"f2":["f3",1],"f4":{"f5":99,"f6":"stringy"}}'::json#>'{f2,0}';
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select '{"f2":["f3",1],"f4":{"f5":99,"f6":"stringy"}}'::json#>'{f2,1}';
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select '{"f2":{"f3":1},"f4":{"f5":99,"f6":"stringy"}}'::json#>>'{f4,f6}';
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select '{"f2":{"f3":1},"f4":{"f5":99,"f6":"stringy"}}'::json#>>'{f2}';
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select '{"f2":["f3",1],"f4":{"f5":99,"f6":"stringy"}}'::json#>>'{f2,0}';
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select '{"f2":["f3",1],"f4":{"f5":99,"f6":"stringy"}}'::json#>>'{f2,1}';
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-- array_elements
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select json_array_elements('[1,true,[1,[2,3]],null,{"f1":1,"f2":[7,8,9]},false,"stringy"]');
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select * from json_array_elements('[1,true,[1,[2,3]],null,{"f1":1,"f2":[7,8,9]},false,"stringy"]') q;
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select json_array_elements_text('[1,true,[1,[2,3]],null,{"f1":1,"f2":[7,8,9]},false,"stringy"]');
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select * from json_array_elements_text('[1,true,[1,[2,3]],null,{"f1":1,"f2":[7,8,9]},false,"stringy"]') q;
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-- populate_record
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create type jpop as (a text, b int, c timestamp);
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select * from json_populate_record(null::jpop,'{"a":"blurfl","x":43.2}') q;
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select * from json_populate_record(row('x',3,'2012-12-31 15:30:56')::jpop,'{"a":"blurfl","x":43.2}') q;
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select * from json_populate_record(null::jpop,'{"a":"blurfl","x":43.2}', true) q;
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select * from json_populate_record(row('x',3,'2012-12-31 15:30:56')::jpop,'{"a":"blurfl","x":43.2}', true) q;
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select * from json_populate_record(null::jpop,'{"a":[100,200,false],"x":43.2}', true) q;
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select * from json_populate_record(row('x',3,'2012-12-31 15:30:56')::jpop,'{"a":[100,200,false],"x":43.2}', true) q;
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select * from json_populate_record(row('x',3,'2012-12-31 15:30:56')::jpop,'{"c":[100,200,false],"x":43.2}', true) q;
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-- populate_recordset
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select * from json_populate_recordset(null::jpop,'[{"a":"blurfl","x":43.2},{"b":3,"c":"2012-01-20 10:42:53"}]',false) q;
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select * from json_populate_recordset(row('def',99,null)::jpop,'[{"a":"blurfl","x":43.2},{"b":3,"c":"2012-01-20 10:42:53"}]',false) q;
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select * from json_populate_recordset(null::jpop,'[{"a":"blurfl","x":43.2},{"b":3,"c":"2012-01-20 10:42:53"}]',true) q;
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select * from json_populate_recordset(row('def',99,null)::jpop,'[{"a":"blurfl","x":43.2},{"b":3,"c":"2012-01-20 10:42:53"}]',true) q;
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select * from json_populate_recordset(row('def',99,null)::jpop,'[{"a":[100,200,300],"x":43.2},{"a":{"z":true},"b":3,"c":"2012-01-20 10:42:53"}]',true) q;
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select * from json_populate_recordset(row('def',99,null)::jpop,'[{"c":[100,200,300],"x":43.2},{"a":{"z":true},"b":3,"c":"2012-01-20 10:42:53"}]',true) q;
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-- using the default use_json_as_text argument
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select * from json_populate_recordset(null::jpop,'[{"a":"blurfl","x":43.2},{"b":3,"c":"2012-01-20 10:42:53"}]') q;
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select * from json_populate_recordset(row('def',99,null)::jpop,'[{"a":"blurfl","x":43.2},{"b":3,"c":"2012-01-20 10:42:53"}]') q;
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select * from json_populate_recordset(row('def',99,null)::jpop,'[{"a":[100,200,300],"x":43.2},{"a":{"z":true},"b":3,"c":"2012-01-20 10:42:53"}]') q;
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select * from json_populate_recordset(row('def',99,null)::jpop,'[{"c":[100,200,300],"x":43.2},{"a":{"z":true},"b":3,"c":"2012-01-20 10:42:53"}]') q;
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-- handling of unicode surrogate pairs
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select json '{ "a": "\ud83d\ude04\ud83d\udc36" }' -> 'a' as correct_in_utf8;
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select json '{ "a": "\ud83d\ud83d" }' -> 'a'; -- 2 high surrogates in a row
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select json '{ "a": "\ude04\ud83d" }' -> 'a'; -- surrogates in wrong order
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select json '{ "a": "\ud83dX" }' -> 'a'; -- orphan high surrogate
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select json '{ "a": "\ude04X" }' -> 'a'; -- orphan low surrogate
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--handling of simple unicode escapes
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select json '{ "a": "the Copyright \u00a9 sign" }' ->> 'a' as correct_in_utf8;
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select json '{ "a": "dollar \u0024 character" }' ->> 'a' as correct_everywhere;
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select json '{ "a": "null \u0000 escape" }' ->> 'a' as not_unescaped;
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--json_typeof() function
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select value, json_typeof(value)
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from (values (json '123.4'),
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(json '-1'),
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(json '"foo"'),
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(json 'true'),
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(json 'false'),
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(json 'null'),
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(json '[1, 2, 3]'),
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(json '[]'),
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(json '{"x":"foo", "y":123}'),
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(json '{}'),
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(NULL::json))
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as data(value);
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-- json_build_array, json_build_object, json_object_agg
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SELECT json_build_array('a',1,'b',1.2,'c',true,'d',null,'e',json '{"x": 3, "y": [1,2,3]}');
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SELECT json_build_object('a',1,'b',1.2,'c',true,'d',null,'e',json '{"x": 3, "y": [1,2,3]}');
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SELECT json_build_object(
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'a', json_build_object('b',false,'c',99),
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'd', json_build_object('e',array[9,8,7]::int[],
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'f', (select row_to_json(r) from ( select relkind, oid::regclass as name from pg_class where relname = 'pg_class') r)));
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-- empty objects/arrays
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SELECT json_build_array();
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SELECT json_build_object();
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-- make sure keys are quoted
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SELECT json_build_object(1,2);
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-- keys must be scalar and not null
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SELECT json_build_object(null,2);
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SELECT json_build_object(r,2) FROM (SELECT 1 AS a, 2 AS b) r;
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SELECT json_build_object(json '{"a":1,"b":2}', 3);
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SELECT json_build_object('{1,2,3}'::int[], 3);
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CREATE TEMP TABLE foo (serial_num int, name text, type text);
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INSERT INTO foo VALUES (847001,'t15','GE1043');
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INSERT INTO foo VALUES (847002,'t16','GE1043');
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INSERT INTO foo VALUES (847003,'sub-alpha','GESS90');
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SELECT json_build_object('turbines',json_object_agg(serial_num,json_build_object('name',name,'type',type)))
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FROM foo;
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-- json_object
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-- one dimension
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SELECT json_object('{a,1,b,2,3,NULL,"d e f","a b c"}');
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|
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-- same but with two dimensions
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SELECT json_object('{{a,1},{b,2},{3,NULL},{"d e f","a b c"}}');
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|
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-- odd number error
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SELECT json_object('{a,b,c}');
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|
|
-- one column error
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SELECT json_object('{{a},{b}}');
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|
|
|
-- too many columns error
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|
SELECT json_object('{{a,b,c},{b,c,d}}');
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|
|
|
-- too many dimensions error
|
|
SELECT json_object('{{{a,b},{c,d}},{{b,c},{d,e}}}');
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|
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--two argument form of json_object
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select json_object('{a,b,c,"d e f"}','{1,2,3,"a b c"}');
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|
|
|
-- too many dimensions
|
|
SELECT json_object('{{a,1},{b,2},{3,NULL},{"d e f","a b c"}}', '{{a,1},{b,2},{3,NULL},{"d e f","a b c"}}');
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|
|
-- mismatched dimensions
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|
|
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select json_object('{a,b,c,"d e f",g}','{1,2,3,"a b c"}');
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|
|
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select json_object('{a,b,c,"d e f"}','{1,2,3,"a b c",g}');
|
|
|
|
-- null key error
|
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|
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select json_object('{a,b,NULL,"d e f"}','{1,2,3,"a b c"}');
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|
|
|
-- empty key error
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select json_object('{a,b,"","d e f"}','{1,2,3,"a b c"}');
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|
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|
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-- json_to_record and json_to_recordset
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|
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select * from json_to_record('{"a":1,"b":"foo","c":"bar"}',true)
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as x(a int, b text, d text);
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select * from json_to_recordset('[{"a":1,"b":"foo","d":false},{"a":2,"b":"bar","c":true}]',false)
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as x(a int, b text, c boolean);
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