[#MDEV-29295] Double convert of ',' in view definition gives incorrect result

[MDEV-29295] Double convert of ',' in view definition gives incorrect result Created: 2022-08-11 Updated: 2023-11-28
Status:	Open
Project:	MariaDB Server
Component/s:	None
Affects Version/s:	10.3, 10.4, 10.5, 10.6, 10.7, 10.8, 10.9
Fix Version/s:	10.11

Type:

Bug

Priority:

Major

Reporter:

Lena Startseva

Assignee:

Oleksandr Byelkin

Resolution:

Unresolved

Votes:

Labels:

view-protocol

Attachments:

vv.frm

Issue Links:

PartOf
is part of	MDEV-27691	make working view-protocol	Open
Relates
relates to	MDEV-31553	Double convert of ',' with cursor-pro...	Open

Description

Expected that "select from table" and "select from view" give the same result:
Test:

select convert(convert(',' using filename) using binary);

create view vv as select convert(convert(',' using filename) using binary);

select * from vv;

drop view vv;

Actual result:

select convert(convert(',' using filename) using binary);

convert(convert(',' using filename) using binary)

@002c

create view vv as select convert(convert(',' using filename) using binary);

select * from vv;

convert(convert(',' using filename) using binary)

Expected result:

select convert(convert(',' using filename) using binary);

convert(convert(',' using filename) using binary)

@002c

create view vv as select convert(convert(',' using filename) using binary);

select * from vv;

convert(convert(',' using filename) using binary)

@002c

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