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https://issues.apache.org/jira/browse/HIVE-26774?focusedWorklogId=836812&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-836812
]
ASF GitHub Bot logged work on HIVE-26774:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 04/Jan/23 06:39
Start Date: 04/Jan/23 06:39
Worklog Time Spent: 10m
Work Description: tarak271 commented on code in PR #3893:
URL: https://github.com/apache/hive/pull/3893#discussion_r1061172528
##########
ql/src/java/org/apache/hadoop/hive/ql/udf/generic/GenericUDFArraySlice.java:
##########
@@ -0,0 +1,73 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.hadoop.hive.ql.udf.generic;
+
+import org.apache.hadoop.hive.ql.exec.Description;
+import org.apache.hadoop.hive.ql.exec.UDFArgumentException;
+import org.apache.hadoop.hive.ql.metadata.HiveException;
+import org.apache.hadoop.hive.serde2.objectinspector.ListObjectInspector;
+import org.apache.hadoop.hive.serde2.objectinspector.ObjectInspector;
+import org.apache.hadoop.hive.serde2.objectinspector.PrimitiveObjectInspector;
+import
org.apache.hadoop.hive.serde2.objectinspector.primitive.IntObjectInspector;
+
+import java.util.Collections;
+import java.util.List;
+import java.util.stream.Collectors;
+
+/**
+ * GenericUDFArraySlice.
+ */
+@Description(name = "array_slice", value = "_FUNC_(array, start, length) -
Returns the subset or range of elements from"
Review Comment:
Tried to make the implementation similar to that of Spark's Slice function
wherever possible, https://spark.apache.org/docs/latest/api/sql/#slice
Please note that negative indexing is not implemented as we don't have it
either in Hive or in Java
Issue Time Tracking
-------------------
Worklog Id: (was: 836812)
Time Spent: 1h 10m (was: 1h)
> Implement array_slice UDF to get the subset of elements from an array
> (subarray)
> --------------------------------------------------------------------------------
>
> Key: HIVE-26774
> URL: https://issues.apache.org/jira/browse/HIVE-26774
> Project: Hive
> Issue Type: Sub-task
> Components: Hive
> Reporter: Taraka Rama Rao Lethavadla
> Assignee: Taraka Rama Rao Lethavadla
> Priority: Minor
> Labels: pull-request-available
> Time Spent: 1h 10m
> Remaining Estimate: 0h
>
> *array_slice(array, start, length)* - Returns the subset or range of elements
> from an array (subarray).
> Example:
>
> {noformat}
> > SELECT array_slice(array(1, 2, 3,4), 2,2) FROM src LIMIT 1;
> 3,4{noformat}
> Returns empty list if start/length are out of range of the array
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