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Fix window function parallel bug

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This commit is contained in:
qianchanger
2022-03-04 11:46:14 +08:00
committed by LINxiansheng
parent f0d7d9d626
commit ab74cf7478
2 changed files with 17 additions and 6 deletions
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8
src/sql/engine/window_function/ob_window_function_op.cpp
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@ -1364,7 +1364,12 @@ int ObWindowFunctionOp::parallel_winbuf_process()
ObDatum& l_datum = new_row->cells()[idx];
const ObDatum& r_datum = row->cells()[idx];
ObDatumCmpFuncType cmp_func = cmp_funcs.at(cmp_index);
if (cmp_func(l_datum, r_datum) < 0) {
// null-last cmp func should ignore null in max calc
if (r_datum.is_null() && !l_datum.is_null()) {
/*do nothing*/
} else if (!r_datum.is_null() && l_datum.is_null()) {
l_datum = r_datum;
} else if (cmp_func(l_datum, r_datum) < 0) {
l_datum = r_datum;
}
cmp_index++;
@ -1374,6 +1379,7 @@ int ObWindowFunctionOp::parallel_winbuf_process()
ObDatum& l_datum = new_row->cells()[idx];
const ObDatum& r_datum = row->cells()[idx];
ObDatumCmpFuncType cmp_func = cmp_funcs.at(cmp_index);
// null-last cmp func no need null special calc in min calc
if (cmp_func(l_datum, r_datum) > 0) {
l_datum = r_datum;
}