hililiwei commented on a change in pull request #16650:
URL: https://github.com/apache/flink/pull/16650#discussion_r682456849
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File path:
flink-table/flink-table-planner/src/main/java/org/apache/flink/table/planner/functions/aggfunctions/LeadLagAggFunction.java
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@@ -230,6 +230,18 @@ public DataType getResultType() {
}
}
+ /** CharLeadLagAggFunction. */
+ public static class CharLeadLagAggFunction extends LeadLagAggFunction {
+ public CharLeadLagAggFunction(int operandCount) {
+ super(operandCount);
+ }
+
+ @Override
+ public DataType getResultType() {
+ return DataTypes.CHAR(operandCount());
Review comment:
thx. I've rewritten this code like the way handle DECIMAL type fields.
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