cosven commented on code in PR #56041:
URL: https://github.com/apache/doris/pull/56041#discussion_r2465483853
##########
fe/fe-core/src/main/java/org/apache/doris/nereids/load/NereidsLoadScanProvider.java:
##########
@@ -164,11 +165,20 @@ private void
fillContextExprMap(List<NereidsImportColumnDesc> columnDescList, Ne
// (k1, k2, tmpk3 = k1 + k2, k3 = k1 + k2)
// so "tmpk3 = k1 + k2" is not needed anymore, we can skip it.
List<NereidsImportColumnDesc> copiedColumnExprs = new
ArrayList<>(columnDescs.size());
+ Set<String> constantMappingColumns = new HashSet<>();
for (NereidsImportColumnDesc importColumnDesc : columnDescs) {
String mappingColumnName = importColumnDesc.getColumnName();
- if (importColumnDesc.isColumn() ||
tbl.getColumn(mappingColumnName) != null) {
+ if (importColumnDesc.isColumn()) {
copiedColumnExprs.add(importColumnDesc);
+ } else if (tbl.getColumn(mappingColumnName) != null) {
+ copiedColumnExprs.add(importColumnDesc);
+ // Only track columns with constant expressions (e.g., "k1 =
'constant'")
+ // Non-constant expressions (e.g., "k1 = k1 + 1") still need
to read from file
+ if (importColumnDesc.getExpr().isConstant()) {
+ constantMappingColumns.add(mappingColumnName);
+ }
Review Comment:
对于 `column = now()` 这种情况，这段逻辑可以正确处理么？
--
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
To unsubscribe, e-mail: [email protected]
For queries about this service, please contact Infrastructure at:
[email protected]
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
