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MDEV-16375 Function to normalize a json value

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This patch implements JSON_NORMALIZE SQL function.

Co-authored-by: Vicențiu Ciorbaru <vicentiu@mariadb.org>
This commit is contained in:
Eric Herman
2021-07-02 08:18:16 +02:00
committed by Vicențiu-Marian Ciorbaru
parent 105e4148bf
commit fcde341764
5 changed files with 221 additions and 0 deletions
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58
mysql-test/main/json_normalize.test Normal file
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set names utf8;
create table t1 (json json);
show create table t1;
insert into t1 values
('{ }'),
('[ ]'),
('{ "foo" : "bar" }'),
('{ "foo" : "bar", "baz" : "whatever" }'),
('[ 1.2, 0.0, "text", 0, null, true, false ]'),
('[ "string", { "key" : "val", "a" : "b", "c" : [ 10, 9, 8, "seven", 11 ] }]'),
('{ "ăț€": "val1", "âț€":"val2" }');
select json, json_normalize(json) from t1
order by json;
create view v1 as (select json, json_normalize(json) norm_json from t1);
show create view v1;
select * from v1
order by json;
select json_normalize(NULL);
select json_normalize('{ "invalid": "no_close"');
drop table t1;
drop view v1;
create table t1 (text varchar(200) character set 'latin1');
insert into t1 values (unhex('22E522'));
create table t2 (text varchar(200) character set 'utf8mb4');
insert into t2 SELECT * FROM t1;
select t1.text, hex(t1.text) from t1;
select t2.text, hex(t2.text) from t2;
select t1.text
, t2.text
, replace(json_normalize(t1.text), unhex('C3A5'), unhex('C385'))
, replace(json_normalize(t2.text), unhex('C3A5'), unhex('C385'))
, hex(replace(json_normalize(t1.text), unhex('C3A5'), unhex('C385')))
, hex(replace(json_normalize(t2.text), unhex('C3A5'), unhex('C385')))
from t1, t2;
drop table t1;
drop table t2;
create table t1 (text varchar(1));
insert into t1 values ('0');
select concat_ws(' ', t1.text, t1.text) from t1;
select concat_ws(' ', json_normalize(t1.text), json_normalize(t1.text)) from t1;
drop table t1;