nooneuse commented on code in PR #67469:
URL: https://github.com/apache/doris/pull/67469#discussion_r3921935407
##########
fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/functions/agg/DataSketchesHllUnionAgg.java:
##########
@@ -39,27 +40,43 @@
/** datasketches_hll_union_agg agg function. */
public class DataSketchesHllUnionAgg extends NotNullableAggregateFunction
- implements UnaryExpression, ExplicitlyCastableSignature,
FunctionTrait, RollUpTrait {
+ implements ExplicitlyCastableSignature, FunctionTrait, RollUpTrait {
public static final List<FunctionSignature> SIGNATURES = ImmutableList.of(
FunctionSignature.ret(DoubleType.INSTANCE).args(StringType.INSTANCE),
FunctionSignature.ret(DoubleType.INSTANCE).args(VarcharType.SYSTEM_DEFAULT),
-
FunctionSignature.ret(DoubleType.INSTANCE).args(VarBinaryType.INSTANCE)
+
FunctionSignature.ret(DoubleType.INSTANCE).args(VarBinaryType.INSTANCE),
+
FunctionSignature.ret(DoubleType.INSTANCE).args(StringType.INSTANCE,
IntegerType.INSTANCE),
Review Comment:
Thanks for pointing this out. I tested the exact query on the current PR head
with Nereids enabled and fallback disabled:
EXPLAIN SELECT DATASKETCHES_HLL_UNION_AGG(
DISTINCT sk, CAST(8 AS BIGINT))
FROM (SELECT CAST(NULL AS STRING) AS sk) t;
The query is planned successfully, and the partial aggregate receives the
normalized integer literal 8. I also verified CAST(4 + 4 AS BIGINT), abs(-8),
and nested integral casts.
Although FoldConstantRuleOnFE skips folding after entering an already-bound
DISTINCT aggregate, these constant child expressions are analyzed and folded
before that point. Therefore checkLegalityAfterRewrite sees an
IntegerLikeLiteral in these cases.
I could not reproduce the reported rejection on the reviewed head. If there
is
another query shape or session setting that leaves the expression as a Cast,
please provide the complete reproduction.
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