Hello @Saifone Nitipavachon ,
Welcome to the Microsoft Q&A and thanks for posting your query.
We apologize for the inconvenience you have encountered here.
The query execution failure could be due to resource constraints. Did you get a chance to re-try it again and see if that helps?
Here are some troubleshooting options:
• Make sure data types of reasonable sizes are used.
• If your query targets Parquet files, consider defining explicit types for string columns because they'll be VARCHAR(8000) by default. Check inferred data types.
• If your query targets CSV files, consider creating statistics.
• To optimize your query, see Performance best practices for serverless SQL pool.
Please refer to this article containing information about how to troubleshoot the most frequent problems with serverless SQL pool in Azure Synapse Analytics. Please let us know if you need further assistance here.