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https://issues.apache.org/jira/browse/TAJO-836?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14027316#comment-14027316
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ASF GitHub Bot commented on TAJO-836:
-------------------------------------
Github user hyunsik commented on a diff in the pull request:
https://github.com/apache/tajo/pull/15#discussion_r13629771
--- Diff:
tajo-algebra/src/main/java/org/apache/tajo/algebra/CreateIndex.java ---
@@ -0,0 +1,129 @@
+/*
+ * 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.tajo.algebra;
+
+import com.google.common.base.Objects;
+import com.google.gson.annotations.Expose;
+import com.google.gson.annotations.SerializedName;
+import org.apache.tajo.algebra.Sort.SortSpec;
+import org.apache.tajo.util.TUtil;
+
+import java.util.Map;
+
+public class CreateIndex extends UnaryOperator {
+ @Expose @SerializedName("IsUnique")
+ private boolean unique = false;
+ @Expose @SerializedName("IndexName")
+ private String indexName;
+ @Expose @SerializedName("SortSpecs")
+ private SortSpec[] sortSpecs;
+ @Expose @SerializedName("IndexProperties")
+ private Map<String, String> params;
--- End diff --
Recently, I'm thinking that ```properties``` is more proper name for the
variable name that we have used as ``param``` in TableMeta. So, I'd like to
suggest to rename it to ```properties```.
> create index support
> --------------------
>
> Key: TAJO-836
> URL: https://issues.apache.org/jira/browse/TAJO-836
> Project: Tajo
> Issue Type: Sub-task
> Components: operator/expression, physical operator, planner/optimizer
> Reporter: Jihoon Son
> Assignee: Jihoon Son
> Priority: Minor
> Fix For: 0.9.0
>
> Attachments: TAJO-836.patch, TAJO-836_2.patch, TAJO-836_3.patch
>
>
> The synopsis is as follows.
> {noformat}
> CREATE [ UNIQUE ] INDEX [ name ] ON table [ USING method ]
> ( { column | ( expression ) } [ ASC | DESC ] [ NULLS { FIRST | LAST } ]
> [, ...] )
> [ WHERE predicate ]
> {noformat}
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