englefly commented on code in PR #12663:
URL: https://github.com/apache/doris/pull/12663#discussion_r974846943
##########
fe/fe-core/src/main/java/org/apache/doris/nereids/types/DataType.java:
##########
@@ -49,6 +54,26 @@ public abstract class DataType implements AbstractDataType {
.put(FloatType.class, () -> DoubleType.INSTANCE)
.build();
+ /**
+ * create a specific Literal for a given dataType
+ */
+ public static Literal promoteNumberLiteral(Object value, DataType
dataType) {
+ if (! (value instanceof Number)) {
+ return null;
+ }
+
+ if (dataType.equals(SmallIntType.INSTANCE)) {
+ return new SmallIntLiteral(((Number) value).shortValue());
Review Comment:
offline discussed. done
we need another pr to do down-cast
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