a75dc80a76
### What changes were proposed in this pull request? Remove the unneeded embedded inline HTML markup by using the basic markdown syntax. Please see #28414 ### Why are the changes needed? Make the doc cleaner and easily editable by MD editors. ### Does this PR introduce _any_ user-facing change? No ### How was this patch tested? Manually build and check Closes #28451 from huaxingao/html_cleanup. Authored-by: Huaxin Gao <huaxing@us.ibm.com> Signed-off-by: Sean Owen <srowen@gmail.com>
126 lines
3.7 KiB
Markdown
126 lines
3.7 KiB
Markdown
---
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layout: global
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title: CREATE HIVEFORMAT TABLE
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displayTitle: CREATE HIVEFORMAT TABLE
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license: |
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Licensed to the Apache Software Foundation (ASF) under one or more
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contributor license agreements. See the NOTICE file distributed with
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this work for additional information regarding copyright ownership.
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The ASF licenses this file to You under the Apache License, Version 2.0
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(the "License"); you may not use this file except in compliance with
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the License. You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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---
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### Description
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The `CREATE TABLE` statement defines a new table using Hive format.
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### Syntax
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```sql
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CREATE [ EXTERNAL ] TABLE [ IF NOT EXISTS ] table_identifier
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[ ( col_name1[:] col_type1 [ COMMENT col_comment1 ], ... ) ]
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[ COMMENT table_comment ]
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[ PARTITIONED BY ( col_name2[:] col_type2 [ COMMENT col_comment2 ], ... )
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| ( col_name1, col_name2, ... ) ]
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[ ROW FORMAT row_format ]
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[ STORED AS file_format ]
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[ LOCATION path ]
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[ TBLPROPERTIES ( key1=val1, key2=val2, ... ) ]
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[ AS select_statement ]
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```
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Note that, the clauses between the columns definition clause and the AS SELECT clause can come in
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as any order. For example, you can write COMMENT table_comment after TBLPROPERTIES.
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### Parameters
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* **table_identifier**
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Specifies a table name, which may be optionally qualified with a database name.
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**Syntax:** `[ database_name. ] table_name`
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* **EXTERNAL**
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Table is defined using the path provided as LOCATION, does not use default location for this table.
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* **PARTITIONED BY**
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Partitions are created on the table, based on the columns specified.
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* **ROW FORMAT**
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SERDE is used to specify a custom SerDe or the DELIMITED clause in order to use the native SerDe.
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* **STORED AS**
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File format for table storage, could be TEXTFILE, ORC, PARQUET, etc.
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* **LOCATION**
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Path to the directory where table data is stored, which could be a path on distributed storage like HDFS, etc.
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* **COMMENT**
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A string literal to describe the table.
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* **TBLPROPERTIES**
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A list of key-value pairs that is used to tag the table definition.
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* **AS select_statement**
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The table is populated using the data from the select statement.
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### Examples
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```sql
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--Use hive format
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CREATE TABLE student (id INT, name STRING, age INT) STORED AS ORC;
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--Use data from another table
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CREATE TABLE student_copy STORED AS ORC
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AS SELECT * FROM student;
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--Specify table comment and properties
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CREATE TABLE student (id INT, name STRING, age INT)
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COMMENT 'this is a comment'
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STORED AS ORC
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TBLPROPERTIES ('foo'='bar');
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--Specify table comment and properties with different clauses order
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CREATE TABLE student (id INT, name STRING, age INT)
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STORED AS ORC
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TBLPROPERTIES ('foo'='bar')
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COMMENT 'this is a comment';
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--Create partitioned table
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CREATE TABLE student (id INT, name STRING)
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PARTITIONED BY (age INT)
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STORED AS ORC;
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--Create partitioned table with different clauses order
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CREATE TABLE student (id INT, name STRING)
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STORED AS ORC
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PARTITIONED BY (age INT);
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--Use Row Format and file format
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CREATE TABLE student (id INT,name STRING)
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ROW FORMAT DELIMITED FIELDS TERMINATED BY ','
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STORED AS TEXTFILE;
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```
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### Related Statements
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* [CREATE TABLE USING DATASOURCE](sql-ref-syntax-ddl-create-table-datasource.html)
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* [CREATE TABLE LIKE](sql-ref-syntax-ddl-create-table-like.html)
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