zabetak commented on code in PR #4135:
URL: https://github.com/apache/hive/pull/4135#discussion_r1145980904
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ql/src/java/org/apache/hadoop/hive/ql/optimizer/calcite/reloperators/HiveToUnixTimestampSqlOperator.java:
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@@ -18,15 +18,24 @@
package org.apache.hadoop.hive.ql.optimizer.calcite.reloperators;
-import org.apache.calcite.sql.fun.SqlAbstractTimeFunction;
-import org.apache.calcite.sql.type.SqlTypeName;
+import org.apache.calcite.sql.SqlFunction;
+import org.apache.calcite.sql.SqlFunctionCategory;
+import org.apache.calcite.sql.SqlKind;
+import org.apache.calcite.sql.type.OperandTypes;
+import org.apache.calcite.sql.type.ReturnTypes;
/**
* Sql UNIX_TIMESTAMP calcite operator.
*/
-public class HiveToUnixTimestampSqlOperator extends SqlAbstractTimeFunction {
- public static final HiveToUnixTimestampSqlOperator INSTANCE = new
HiveToUnixTimestampSqlOperator();
- protected HiveToUnixTimestampSqlOperator() {
- super("UNIX_TIMESTAMP", SqlTypeName.BIGINT);
- }
+public class HiveToUnixTimestampSqlOperator {
+ public static final SqlFunction INSTANCE =
+ new SqlFunction("UNIX_TIMESTAMP", SqlKind.OTHER_FUNCTION,
ReturnTypes.BIGINT, null,
+ OperandTypes.or(OperandTypes.NILADIC,
+ OperandTypes.or(OperandTypes.STRING, OperandTypes.TIMESTAMP,
OperandTypes.DATE),
+ OperandTypes.STRING_STRING), SqlFunctionCategory.NUMERIC) {
+ @Override
+ public boolean isDynamicFunction() {
+ return true;
+ }
Review Comment:
Here is one place where we convert from one operator to the other:
https://github.com/apache/hive/blob/e401b5b3c6ac7064615dc9f28cc9d974b815b070/ql/src/java/org/apache/hadoop/hive/ql/parse/type/HiveFunctionHelper.java#L317
Here is another place that only kicks in for one of the two operators:
https://github.com/apache/hive/blob/e401b5b3c6ac7064615dc9f28cc9d974b815b070/ql/src/java/org/apache/hadoop/hive/ql/parse/DruidSqlOperatorConverter.java#L99
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