49+ Databricks Delta Table Drop Column UK

49+ Databricks Delta Table Drop Column UK. To update all the columns of the target delta table with the corresponding columns of the source dataset, use whenmatched(.).updateall(). In databricks runtime 6.5 and below, you must provide all the columns in the target table for the insert action.

Simplifying Change Data Capture using Databricks Delta from image.slidesharecdn.com

To drop a column from a table physically, you use the following statement If you try to execute the following statement, you will get an error: Alter table sales.price_lists drop column note;

Through delta lake, databricks is trying to cater to some of the existing pain points in the big data etl changing a column's type or dropping a column requires rewriting the table.

Alter table main.metrics_table drop column metric_1; For example #refno, #custno , cust no and etc. Alter table table_name drop column column_name_1, drop column column_name_2,.; Alter table suppliers drop unused columns;