morrySnow commented on code in PR #53918:
URL: https://github.com/apache/doris/pull/53918#discussion_r2250767967
##########
fe/fe-core/src/main/java/org/apache/doris/nereids/load/NereidsDataDescription.java:
##########
@@ -1167,7 +1168,14 @@ public DataDescription toDataDescription(ConnectContext
ctx) throws AnalysisExce
if (this.columnMappingList != null &&
!this.columnMappingList.isEmpty()) {
for (Expression expression : this.columnMappingList) {
if (expression != null) {
-
legacyColumnMappingList.add(PlanUtils.translateToLegacyExpr(expression, null,
ctx));
+ if (expression instanceof EqualTo) {
+ Expr left = PlanUtils.translateToLegacyExpr(((EqualTo)
expression).left(), null, ctx);
+ Expr right =
PlanUtils.translateToLegacyExpr(((EqualTo) expression).right(), null, ctx);
+ legacyColumnMappingList.add(new
BinaryPredicate(BinaryPredicate.Operator.EQ, left, right));
Review Comment:
need to comment to explain where do cast right to left' datatype
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