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Fixed the bug mdev-12440.

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When a CTE referring to another CTE from the same with clause
was used twice then the server could not find the second CTE and
reported a bogus error message.
This happened because for any unit that was created as a clone of
a CTE specification the pointer to the WITH clause that owned this CTE
was not set.
This commit is contained in:
Igor Babaev
2017-04-06 12:08:14 -07:00
parent 1759e91986
commit 428a922cd0
3 changed files with 48 additions and 0 deletions
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1
sql/sql_cte.cc
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@ -780,6 +780,7 @@ st_select_lex_unit *With_element::clone_parsed_spec(THD *thd,
with_table->next_global= spec_tables;
}
res= &lex->unit;
res->set_with_clause(owner);
lex->unit.include_down(with_table->select_lex);
lex->unit.set_slave(with_select);