Support to import NULL value

[yixinglu]

for nullable fields of tag or edge, think about how to import the NULL value in csv file.

[zfanswer]

+1

[yixinglu]

We will support this feature recently. And the implementation maybe follow the answer of this question in stackoverflow:

https://stackoverflow.com/questions/2675323/mysql-load-null-values-from-csv-data

@zfanswer if you have more ideas and question about this feature, please be free to raise them here. Thanks.

[zfanswer]

Thanks for your quick response! Looking forward for the new feature.

[goranc]

Just to put info here after discussion on Slack channel. You can use NULL value instead of standard \N in CSV file to be able to import it into Nebula.