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MDEV-13104 Json functions.

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An extra ',' added to the JSON_MERGE result making it invalid.
This commit is contained in:
Alexey Botchkov
2017-09-12 15:21:53 +04:00
parent 467acc2119
commit 0cd731864e
3 changed files with 22 additions and 3 deletions
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3
mysql-test/r/func_json.result
View File

@ -683,3 +683,6 @@ JSON_OBJECT("foo", "bar`bar")
SELECT JSON_SET('{}', '$.age', 87);
JSON_SET('{}', '$.age', 87)
{"age": 87}
SELECT JSON_MERGE('[]', '{"c":"d"}');
JSON_MERGE('[]', '{"c":"d"}')
[{"c": "d"}]

5
mysql-test/t/func_json.test
View File

@ -333,3 +333,8 @@ SELECT JSON_OBJECT("foo", "bar`bar");
#
SELECT JSON_SET('{}', '$.age', 87);
#
# MDEV-13104 Json functions.
#
SELECT JSON_MERGE('[]', '{"c":"d"}');

17
sql/item_jsonfunc.cc
View File

@ -1971,14 +1971,25 @@ continue_j2:
else
{
const uchar *end1, *beg1, *end2, *beg2;
int empty_array= 0;
beg1= je1->value_begin;
/* Merge as a single array. */
if (je1->value_type == JSON_VALUE_ARRAY)
{
if (json_skip_level(je1))
int cur_level= je1->stack_p;
empty_array= 1;
while (json_scan_next(je1) == 0)
{
if (je1->stack_p < cur_level)
break;
empty_array= 0;
}
if (je1->s.error)
return 1;
end1= je1->s.c_str - je1->sav_c_len;
}
else
@ -1995,8 +2006,8 @@ continue_j2:
end1= je1->value_end;
}
if (str->append((const char*) beg1, end1 - beg1),
str->append(", ", 2))
if (str->append((const char*) beg1, end1 - beg1) ||
(!empty_array && str->append(", ", 2)))
return 3;
if (json_value_scalar(je2))