Import data

After CSV files of data and a schema are created, you can use the Import page to batch import vertex and edge data into NebulaGraph for graph exploration and data analysis.

Prerequisites

To batch import data, do a check of these:

• Studio is connected to NebulaGraph.

• A schema is created.

• CSV files meet the demands of the Schema.

• Your account has privilege of GOD, ADMIN, DBA, or USER.

Procedure

Before importing data, you need to upload the file first and then create the import task.

Upload files

To upload files, follow these steps:

1. In the toolbar, click the Import tab.

2. On the Upload Files page, click the Upload Files button and then choose CSV files. In this example, edge_serve.csv, edge_follow.csv, vertex_player.csv, and vertex_team.csv are chosen.

   Note

   You can choose multiple CSV files at the same time. The CSV file used in this article can be downloaded in the Design a schema.

3. After uploading, you can click the button in the Operations column to preview the file content, or click the button to delete the uploaded file.

   

Import Data

To batch import data, follow these steps:

1. In the toolbar, click the Import tab.

2. In Import tab, click the Import Data.

3. On the Import Data page, click + New Import button to complete these operations:

   Caution

   users can click Import Template to download the example configuration file example.yaml, and upload the configuration file after configuration. The configuration mode is similar to that of Nebula Importer, but all file paths for configuration files in the template retain the filename only. And make sure all CSV data files are uploaded before importing the YAML file.

   • Select a graph space.
   • Fill in the task name.
   • (Optional) Fill in the batch size.
   • In the Map Vertices section, click the + Bind Datasource button, select bind source file in the dialog box, and click the Confirm button, the vertex_player.csv file is chosen.
     • In the vertices 1 drop-down list, click Select CSV Index, and select the column where vertexID is located in the pop-up dialog box.
     • Click the + Add Tag button and click the icon on the right. In the displayed property list, bind the source data for the tag property. In this example, player is used for the vertex_player.csv file. For the player tag, choose Column 1 for the age property, and choose Column 2 for the name property.

   • In the Map Edges section, click the + Bind Datasource button, select bind source file in the dialog box, and click the Confirm button, the edge_follow.csv file is chosen.

     • In the vertices 1 drop-down list, click Select Edge Type. In this example, follow is chosen.
     • Based on the edge type property, select the corresponding data column from the edge_follow.csv file. srcId and dstId are the VIDs of the source vertex and destination vertex of an edge. In this example, srcId must be set to the VIDs of the player and dstId must be set to the VIDs of another player. Rank is optional.

     

4. After completing the settings, click the Import button.

5. You need to enter the password of your Nebula account before importing data.

6. After importing data, you can view logs, download logs, download configuration files, and delete tasks on the Import Data tab.

---

Last update: February 19, 2024