snuyanzin commented on code in PR #28152:
URL: https://github.com/apache/flink/pull/28152#discussion_r3235152885
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flink-table/flink-table-planner/src/main/java/org/apache/calcite/sql/validate/SqlValidatorImpl.java:
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@@ -145,18 +146,26 @@
import java.util.HashMap;
import java.util.HashSet;
import java.util.IdentityHashMap;
+import java.util.LinkedHashSet;
import java.util.List;
import java.util.Locale;
import java.util.Map;
import java.util.Objects;
import java.util.Set;
+import java.util.TreeSet;
import java.util.function.BiFunction;
+import java.util.function.Consumer;
import java.util.function.Supplier;
import java.util.function.UnaryOperator;
import java.util.stream.Collectors;
+import java.util.stream.StreamSupport;
+import static com.google.common.base.Preconditions.checkArgument;
Review Comment:
Synced with Calcite
##########
flink-table/flink-table-planner/src/main/java/org/apache/calcite/sql/SqlCall.java:
##########
@@ -205,7 +205,7 @@ public boolean equalsDeep(@Nullable SqlNode node, Litmus
litmus) {
* Returns a string describing the actual argument types of a call, e.g.
"SUBSTR(VARCHAR(12),
* NUMBER(3,2), INTEGER)".
*/
- protected String getCallSignature(SqlValidator validator, @Nullable
SqlValidatorScope scope) {
+ public String getCallSignature(SqlValidator validator, @Nullable
SqlValidatorScope scope) {
Review Comment:
Synced with Calcite
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