pengxiangyu commented on a change in pull request #6768:
URL: https://github.com/apache/incubator-doris/pull/6768#discussion_r719120991
##########
File path: fe/fe-core/src/main/java/org/apache/doris/catalog/Type.java
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@@ -1018,6 +1018,13 @@ public static Type getCmpType(Type t1, Type t2) {
|| (t1ResultType == PrimitiveType.VARCHAR && t2ResultType ==
PrimitiveType.STRING)) {
return Type.STRING;
}
+
+ // int family type and char family type should cast to char family type
+ if ((t1ResultType.isFixedPointType() && t2ResultType.isCharFamily()) ||
+ (t2ResultType.isFixedPointType() &&
t1ResultType.isCharFamily())) {
+ return t1.isStringType() ? t1 : t2;
Review comment:
数字类型按照字符来排序存在错误的可能。比如1235与12345，按数字递增是1235,12345，按字符串递增就是12345,1235
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