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Merge remote-tracking branch 'origin/bb-10.2-ext' into 10.3

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This commit is contained in:
Alexander Barkov
2017-07-31 23:00:59 +04:00
parent e67b816451 c9218ff439
commit c431eafd62
29 changed files with 1098 additions and 781 deletions
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8
sql/sql_select.cc
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@ -3405,8 +3405,14 @@ void JOIN::exec_inner()
if (zero_result_cause)
{
if (select_lex->have_window_funcs())
if (select_lex->have_window_funcs() && send_row_on_empty_set())
{
/*
The query produces just one row but it has window functions.
The only way to compute the value of window function(s) is to
run the entire window function computation step (there is no shortcut).
*/
const_tables= table_count;
first_select= sub_select_postjoin_aggr;
}