Apache Hive and Visual Query Builder : use information_schema when available

[simonaubert_bd]

Hello,


As of today, when you connect o, a database, you go through a batch of queries to retrieve which database it is ( cf https://community.alteryx.com/t5/Alteryx-Designer-Ideas/Smart-Visual-Query-Builder-for-in-db-less-te... where I suggest a solution to speed up the process) and then, Alteryx queries the metadata. In order to get the column in each table, Alteryx use a SHOW TABLES and then loop on each table. This is really slow. 

However, since Hive 3.0, an information_schema with the list of columns for each  table is now available. I suggest to use the information_schema.columns instead of the time-consuming loop.

PS : I don't know if it's linked to the Active Query Builder, the third-party tool behind the Visual Query Builder. In that case, it would be a good idea to update it as suggested here https://community.alteryx.com/t5/Alteryx-Designer-Ideas/Update-Query-Builder-component/idi-p/799086

Best regards,

Simon