Help Center> DataArts Studio> User Guide> DataArts Factory> Data Management> Creating a Table
Updated on 2024-04-29 GMT+08:00
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Creating a Table

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 mode 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

Creating a Table (GUI Mode)

  1. Log in to the DataArts Studio console by following the instructions in Accessing the DataArts Studio Instance Console.
  2. On the DataArts Studio console, locate a workspace and click DataArts Factory.
  3. In the left navigation pane of DataArts Factory, choose Data Development > Develop Script.
  4. In the script development menu, click , expand the data connection to tables, and right-click Create Table or click to create a table.
  5. 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.

    DWS

    For details, see the Basic Property part in Table 6.

    MRS Hive

    For details, see the Basic Property part in Table 7.
  6. 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.

    DWS

    For details, see the Table Structure part in Table 6.

    MRS Hive

    For details, see the Table Structure part in Table 7.
  7. Click OK.

Creating a Table (DDL Mode)

  1. Log in to the DataArts Studio console by following the instructions in Accessing the DataArts Studio Instance Console.
  2. On the DataArts Studio console, locate a workspace and click DataArts Factory.
  3. In the left navigation pane of DataArts Factory, choose Data Development > Develop Script.
  4. In the script development menu, click , expand the data connection to tables, and right-click Create Table or click to create a table.
  5. 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
  6. 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 DWS, DLI, 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. The name must contain 1 to 63 characters, including only lowercase letters, numbers, and underscores (_). It cannot contain only numbers or start with an underscore.

Alias

No

Alias of a table. The alias must contain 1 to 63 characters, including only letters, numbers, and underscores (_). It cannot contain only numbers 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. The name must contain 1 to 63 characters, including only letters, numbers, and underscores (_). It cannot contain only numbers or start with an underscore.

Alias

No

Alias of a table. The alias must contain 1 to 63 characters, including only letters, numbers, and underscores (_). It cannot contain only numbers 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. The name must contain 1 to 63 characters, including only lowercase letters, numbers, and underscores (_). It cannot contain only numbers or start with an underscore.

Alias

No

Alias of a table. The alias must contain 1 to 63 characters, including only letters, numbers, and underscores (_). It cannot contain only numbers 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 .
Parent topic: Data Management