Efficient Slowly Changing Dimension type 1 in #PowerCenter : separate INSERT detection port (record doesn't exist on target) from UPDATE port (check all columns for changes) and evaluate them separately in Filter Transformations. Benefit: generated #sql query for INSERT will not have complex WHERE condition which UPDATE uses. #ETL #Teradata
ETL (Extract, Transform, Load), SQL (Structured Query Language), data modeling, databases and bits of big data. Microblog written by @gytis