Hi Alexey,
I was looking at Json_table_nested_path::set_position(), wondering why does
it have an assignment
np->m_null= TRUE;
but doesn't clear the NULL values and trying to come up with an example of this
going wrong when I've hit this crash:
select * from
json_table(
'[
{"name": "X",
"colors":["blue"], "sizes": [1,2,3,4], "prices" : [10,20]},
{"name": "Y",
"colors":["red"], "sizes": [10,11], "prices" : [100,200,300]}
]',
'$[*]' columns
(
seq0 for ordinality,
name varchar(4) path '$.name',
nested path '$.colors[*]' columns (
seq1 for ordinality,
color text path '$'
),
nested path '$.sizes[*]' columns (
seq2 for ordinality,
size int path '$'
),
nested path '$.prices[*]' columns (
seq3 for ordinality,
price int path '$'
)
)
) as T order by seq0, name;
Note this==NULL:
(gdb) wher
#0 0x00005555560edf72 in Json_table_nested_path::set_position (this=0x0,
j_start=0x7ffeb0016e68 "[ \n {\"name\": \"X\", \n \"colors\":[\"blue\"],
\"sizes\": [1,2,3,4], \"prices\" : [10,20]},\n {\"name\": \"Y\", \n
\"colors\":[\"red\"], \"sizes\": [10,11], \"prices\" : [100,200,300]}\n]",
j_end=0x7ffeb0016f12 "", pos=0x7ffeb0035e51
"\245\245\245\245\245\245\245\245\006") at
/home/psergey/dev-git2/10.6-hf-review6/sql/table_function.cc:239
#1 0x00005555560ee12f in Json_table_nested_path::set_position
(this=0x7ffeb0017060, j_start=0x7ffeb0016e68 "[ \n {\"name\": \"X\", \n
\"colors\":[\"blue\"], \"sizes\": [1,2,3,4], \"prices\" : [10,20]},\n
{\"name\": \"Y\", \n \"colors\":[\"red\"], \"sizes\": [10,11], \"prices\" :
[100,200,300]}\n]", j_end=0x7ffeb0016f12 "", pos=0x7ffeb0035e48 "") at
/home/psergey/dev-git2/10.6-hf-review6/sql/table_function.cc:262
#2 0x00005555560ee9f0 in ha_json_table::rnd_pos (this=0x7ffeb0014f00,
buf=0x7ffeb0025570 "\377", pos=0x7ffeb0035e48 "") at
/home/psergey/dev-git2/10.6-hf-review6/sql/table_function.cc:434
#3 0x00005555561ca6a4 in handler::ha_rnd_pos (this=0x7ffeb0014f00,
buf=0x7ffeb0025570 "\377", pos=0x7ffeb0035e48 "") at
/home/psergey/dev-git2/10.6-hf-review6/sql/handler.cc:3101
#4 0x00005555563852e3 in rr_from_pointers (info=0x7ffeb001f9e0) at
/home/psergey/dev-git2/10.6-hf-review6/sql/records.cc:615
#5 0x0000555555da4a75 in READ_RECORD::read_record (this=0x7ffeb001f9e0) at
/home/psergey/dev-git2/10.6-hf-review6/sql/records.h:81
#6 0x0000555555ee1876 in join_init_read_record (tab=0x7ffeb001f918) at
/home/psergey/dev-git2/10.6-hf-review6/sql/sql_select.cc:21644
#7 0x0000555555edf35a in sub_select (join=0x7ffeb001d948,
join_tab=0x7ffeb001f918, end_of_records=false) at
/home/psergey/dev-git2/10.6-hf-review6/sql/sql_select.cc:20666
#8 0x0000555555ede8e6 in do_select (join=0x7ffeb001d948, procedure=0x0) at
/home/psergey/dev-git2/10.6-hf-review6/sql/sql_select.cc:20216
#9 0x0000555555eb24e7 in JOIN::exec_inner (this=0x7ffeb001d948) at
/home/psergey/dev-git2/10.6-hf-review6/sql/sql_select.cc:4484
#10 0x0000555555eb1613 in JOIN::exec (this=0x7ffeb001d948) at
/home/psergey/dev-git2/10.6-hf-review6/sql/sql_select.cc:4264
Please fix.
BR
Sergei
--
Sergei Petrunia, Software Developer
MariaDB Corporation | Skype: sergefp | Blog: http://petrunia.net
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