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Bug#44306: Assertion fail on duplicate key error in

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'INSERT ... SELECT' statements
            
The code that produces result rows expected that a duplicate row
error could not occur in INSERT ... SELECT statements with 
unfulfilled WHERE conditions. This may happen, however, if the 
SELECT list contains only aggregate functions.
Fixed by checking if an error occured before trying to send EOF
to the client.
This commit is contained in:
Martin Hansson
2009-05-04 14:45:36 +02:00
parent 4edc43b7b8
commit 8fa68f5719
3 changed files with 19 additions and 2 deletions
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6
sql/sql_select.cc
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@ -7084,15 +7084,17 @@ return_zero_rows(JOIN *join, select_result *result,TABLE_LIST *tables,
if (!(result->send_fields(fields,
Protocol::SEND_NUM_ROWS | Protocol::SEND_EOF)))
{
bool send_error= FALSE;
if (send_row)
{
List_iterator_fast<Item> it(fields);
Item *item;
while ((item= it++))
item->no_rows_in_result();
result->send_data(fields);
send_error= result->send_data(fields);
}
result->send_eof(); // Should be safe
if (!send_error)
result->send_eof(); // Should be safe
}
/* Update results for FOUND_ROWS */
join->thd->limit_found_rows= join->thd->examined_row_count= 0;