yinzhijian commented on code in PR #9433:
URL: https://github.com/apache/incubator-doris/pull/9433#discussion_r867502807
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fe/fe-core/src/main/java/org/apache/doris/load/Load.java:
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@@ -1044,26 +1047,52 @@ private static void initColumns(Table tbl,
List<ImportColumnDesc> columnExprs,
if (!needInitSlotAndAnalyzeExprs) {
return;
}
-
+ Set<String> exprArgsColumns =
Sets.newTreeSet(String.CASE_INSENSITIVE_ORDER);
+ for (ImportColumnDesc importColumnDesc : copiedColumnExprs) {
+ if (importColumnDesc.isColumn()) {
+ continue;
+ }
+ List<SlotRef> slots = Lists.newArrayList();
+ importColumnDesc.getExpr().collect(SlotRef.class, slots);
+ for (SlotRef slot : slots) {
+ String slotColumnName = slot.getColumnName();
+ exprArgsColumns.add(slotColumnName);
+ }
+ }
+ Set<String> excludedColumns =
Sets.newTreeSet(String.CASE_INSENSITIVE_ORDER);
// init slot desc add expr map, also transform hadoop functions
for (ImportColumnDesc importColumnDesc : copiedColumnExprs) {
// make column name case match with real column name
String columnName = importColumnDesc.getColumnName();
- String realColName = tbl.getColumn(columnName) == null ? columnName
+ Column tblColumn = tbl.getColumn(columnName);
+ String realColName = tblColumn == null ? columnName
: tbl.getColumn(columnName).getName();
if (importColumnDesc.getExpr() != null) {
Expr expr = transformHadoopFunctionExpr(tbl, realColName,
importColumnDesc.getExpr());
exprsByName.put(realColName, expr);
} else {
SlotDescriptor slotDesc =
analyzer.getDescTbl().addSlotDescriptor(srcTupleDesc);
- slotDesc.setType(ScalarType.createType(PrimitiveType.VARCHAR));
+ // only support parquet format now
+ if (exprArgsColumns.contains(columnName) || formatType !=
TFileFormatType.FORMAT_PARQUET
+ || !useVectorizedLoad) {
+ // columns in expr args should be parsed as varchar type
+
slotDesc.setType(ScalarType.createType(PrimitiveType.VARCHAR));
+ slotDesc.setColumn(new Column(realColName,
PrimitiveType.VARCHAR));
+ excludedColumns.add(realColName);
+ // ISSUE A: src slot should be nullable even if the column
is not nullable.
+ // because src slot is what we read from file, not
represent to real column value.
+ // If column is not nullable, error will be thrown when
filling the dest slot,
+ // which is not nullable.
+ slotDesc.setIsNullable(true);
+ } else {
+ // in vectorized load,
+ // columns from files like parquet files can be parsed as
the type in table schema
+ slotDesc.setType(tblColumn.getType());
+ slotDesc.setColumn(new Column(realColName,
tblColumn.getType()));
+ // non-nullable column is allowed in vectorized load with
parquet format
+ slotDesc.setIsNullable(tblColumn.isAllowNull());
Review Comment:
This is for in future versions, where doris column is not nullable and
parquet is nullable,we can filter out unwanted values before executing
expressions
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