You can create a table on the DataArts Factory console, in DDL mode, or using a SQL script.

(Recommended) Console: You can directly create a table on the DataArts Studio DataArts Factory console with no code.
(Recommended) DDL mode: You can select the DDL mode in DataArts Studio's DataArts Factory module to create a table using a SQL script.
SQL script: You can also develop and execute a SQL script for creating a table in the SQL editor of DataArts Studio's DataArts Factory module or a data lake product, and then use the script to create a table.

This section describes how to create a table on the DataArts Factory console and in DDL mode.

Prerequisites

You have created a database and a DWS database schema. For details, see Creating a Database and (Optional) Creating a Database Schema.
A data connection that matches the table type has been created in DataArts Factory. For details, see Creating a Data Connection.

Creating a Table (GUI Mode)

Log in to the DataArts Studio console by following the instructions in Accessing the DataArts Studio Instance Console.
On the DataArts Studio console, locate a workspace and click DataArts Factory.
In the left navigation pane of DataArts Factory, choose Data Development > Develop Script.
In the script development menu, click , expand the data connection to tables, and right-click Create Table or click to create a table.

In the displayed dialog box, configure parameters based on Table 1 on the Basic property configuration tab page.

**Table 1** Basic property parameters
Data Connection Type	Description
DLI	For details, see the Basic Property part in Table 5.
GaussDB(DWS)	For details, see the Basic Property part in Table 6.
MRS Hive	For details, see the Basic Property part in Table 7.

Click Next. On the Configure Table Structure page, configure tbe table structure parameters based on Table 2.

**Table 2** Table structure
Data Connection Type	Description
DLI	For details, see the Table Structure part in Table 5.
GaussDB(DWS)	For details, see the Table Structure part in Table 6.
MRS Hive	For details, see the Table Structure part in Table 7.

Click OK.

Creating a Table (DDL Mode)

Log in to the DataArts Studio console by following the instructions in Accessing the DataArts Studio Instance Console.
On the DataArts Studio console, locate a workspace and click DataArts Factory.
In the left navigation pane of DataArts Factory, choose Data Development > Develop Script.
In the script development menu, click , expand the data connection to tables, and right-click Create Table or click to create a table.

Click DDL-based Table Creation and enter SQL statements in the displayed editor. (Default values are set for the parameters listed in Table 3.) The following is an example:

CREATE TABLE userinfo ( id INT, name STRING);

The SQL syntax varies depending on the data source. Before developing an SQL statement, learn about the syntax of the data source from its documentation.

**Table 3** Data table parameters
Parameter	Description
Data Connection Type	Type of data connection to which the table belongs
Data Connection	Data connection to which the table belongs
Database	Database where the data table is located

Click Save.

Related Operations

View table details: In the script development menu, click

. Expand the data connection to the data table level, right-click a table name, and select View Details from the shortcut menu to view the table details shown in Table 4.

**Table 4** Table details
Tab Name	Description
Table Information	Displays the basic information and storage information about the table.
Field Information	Displays the field information about the table.
Data Preview	Displays 10 records in the table.
DDL	Displays the DDL of the DLI, DWS or MRS Hive data table.

Delete a table: In the script development menu, click . Expand a data connection, right-click a table name, select Delete, and click OK in the displayed dialog box.

Deleted tables cannot be recovered. Exercise caution when performing this operation.

Parameter Description

**Table 5** DLI data table
Parameter	Mandatory	Description
Basic Property
Table Name	Yes	Name of a table. It can contain only letters, digits, and underscores (_). It cannot contain only digits or start with an underscore (_) or a digit.
Alias	No	Alias of the data table. It can contain only letters, digits, and underscores (_). It cannot contain only digits or start with an underscore (_).
Data Connection Type	Yes	Type of the data connection to which the table belongs. The default value is used and cannot be changed.
Data Connection	Yes	Data connection to which the table belongs. The default value is used and cannot be changed.
Database	Yes	Database where the data table is located. The default value is used and cannot be changed.
Data Location	Yes	Location to save data. Possible values: OBS DLI
Data Format	Yes	Format of data. This parameter is available only when Data Location is set to OBS. Possible values: parquet: DataArts Factory can read non-compressed parquet data and parquet data compressed using Snappy or gzip. csv: DataArts Factory can read non-compressed CSV data and CSV data compressed using gzip. orc: DataArts Factory can read non-compressed ORC data and ORC data compressed using Snappy. json: DataArts Factory can read non-compressed JSON data and JSON data compressed using gzip.
Path	Yes	OBS path where the data is stored. This parameter is available only when Data Location is set to OBS. If no OBS path or OBS bucket is available, the system automatically creates an OBS directory. NOTE: If the number of OBS buckets has reached the upper limit, the system automatically displays the following message: "Failed to create the OBS directory. Error cause: [Create OBS Bucket failed:TooManyBuckets:You have attempted to create more buckets than allowed]".
Table Description	No	Descriptive information about the table.
Table Structure
Column Type	Yes	Type of the column. Available options include Partition Column and Common Column. The default value is Common Column.
Column Name	Yes	Name of the column. The name must be unique.
Type	Yes	Type of data.
Column Description	No	Descriptive information about the column.
Operation	No	To add a column, click . To delete a column, click .

**Table 6** DWS data table
Parameter	Mandatory	Description
Basic Property
Table Name	Yes	Name of a table. It can contain only letters, digits, and underscores (_). It cannot contain only digits or start with an underscore (_) or a digit.
Alias	No	Alias of the data table. It can contain only letters, digits, and underscores (_). It cannot contain only digits or start with an underscore (_).
Data Connection Type	Yes	Type of the data connection to which the table belongs. The default value is used and cannot be changed.
Data Connection	Yes	Data connection to which the table belongs. The default value is used and cannot be changed.
Database	Yes	Database where the data table is located. The default value is used and cannot be changed.
Schema	Yes	Schema of the database.
Table Description	No	Descriptive information about the table.
Advanced Settings	No	The following advanced options are available: Storage method of a table. Possible values: Row store Column store Compression level of a table Available values when the storage method is row store: YES or NO. Available values when the storage method is column store: YES, NO, LOW, MIDDLE, or HIGH. For the same compression level in column store mode, you can configure compression grades from 0 to 3. Within any compression level, the higher the grade, the greater the compression ratio.
Table Structure
Column Name	Yes	Name of the column. The name must be unique.
Data Classification	Yes	Classification of data. Possible values: Value Currency Boolean Binary Character Time Geometric Network address Bit string Text search UUID JSON OID
Data Type	Yes	Type of data.
Column Description	No	Descriptive information about the column.
Create ES Index	No	If you click the check box, an ES index needs to be created. When creating the ES index, select the created CSS cluster from the CloudSearch Cluster Name drop-down list. For details about how to create a CSS cluster, see Cloud Search Service User Guide.
Index Data Type	No	Data type of the ES index. The options are as follows: text keyword date long integer short byte double boolean binary
Operation	No	To add a column, click . To delete a column, click .

**Table 7** MRS Hive data table
Parameter	Mandatory	Description
Basic Property
Table Name	Yes	Name of a table. It can contain only letters, digits, and underscores (_). It cannot contain only digits or start with an underscore (_) or a digit.
Alias	No	Alias of the data table. It can contain only letters, digits, and underscores (_). It cannot contain only digits or start with an underscore (_).
Data Connection Type	Yes	Type of the data connection to which the table belongs. The default value is used and cannot be changed.
Data Connection	Yes	Data connection to which the table belongs. The default value is used and cannot be changed.
Database	Yes	Database to which the table belongs. The default value is used and cannot be changed.
Table Description	No	Descriptive information about the table.
Table Structure
Column Name	Yes	Name of the column. The name must be unique.
Data Classification	Yes	Classification of data. Possible values: Original type ARRAY MAP STRUCT UNION
Data Type	Yes	Type of data. See LanguageManual DDL.
Column Description	No	Descriptive information about the column.
Operation	No	To add a column, click . To delete a column, click .