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streamlookup: fix for left table name is prefix of right table #9177

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merged 1 commit into from
Sep 13, 2024
Merged

streamlookup: fix for left table name is prefix of right table #9177

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10 changes: 6 additions & 4 deletions ydb/library/yql/dq/actors/input_transforms/dq_input_transform_lookup.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -352,15 +352,17 @@ TOutputRowColumnOrder CategorizeOutputRowItems(
size_t idxRightPayload = 0;
for (ui32 i = 0; i != type->GetMembersCount(); ++i) {
const auto prefixedName = type->GetMemberName(i);
if (prefixedName.starts_with(leftLabel)) {
Y_ABORT_IF(prefixedName.length() == leftLabel.length());
if (prefixedName.starts_with(leftLabel) &&
prefixedName.length() > leftLabel.length() &&
prefixedName[leftLabel.length()] == '.') {
const auto name = prefixedName.SubStr(leftLabel.length() + 1); //skip prefix and dot
result[i] = {
leftJoinColumns.contains(name) ? EOutputRowItemSource::InputKey : EOutputRowItemSource::InputOther,
idxLeft++
};
} else if (prefixedName.starts_with(rightLabel)) {
Y_ABORT_IF(prefixedName.length() == rightLabel.length());
} else if (prefixedName.starts_with(rightLabel) &&
prefixedName.length() > rightLabel.length() &&
prefixedName[rightLabel.length()] == '.') {
const auto name = prefixedName.SubStr(rightLabel.length() + 1); //skip prefix and dot
//presume that indexes in LookupKey, LookupOther has the same relative position as in OutputRow
if (rightJoinColumns.contains(name)) {
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