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MDEV-21201 No records produced in information_schema query, depending on projection

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In case of NATURAL JOIN / USING mark all field (one table can not be opened
in any case so optimisation does not worth it).

IMHO table should be checked for used fields and filled after prepare,
when we will fave whole info about used fields but it is too big change
for a bugfix. Which will be made later by Serg patch
This commit is contained in:
Oleksandr Byelkin
2020-07-08 16:26:34 +02:00
parent 78c2a5ab70
commit a8458a2345
5 changed files with 133 additions and 1 deletions
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2
sql/sql_parse.cc
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@ -8904,6 +8904,8 @@ void add_join_natural(TABLE_LIST *a, TABLE_LIST *b, List<String> *using_fields,
SELECT_LEX *lex)
{
b->natural_join= a;
a->part_of_natural_join= TRUE;
b->part_of_natural_join= TRUE;
lex->prev_join_using= using_fields;
}