When you think of a parameter that can help you out with star queries, this parameter is the STAR_TRANSFORMATION_ENABLED. According to the Oracle official documentation, it is described as the difference between a typical query and a star query, “A typical query in the access layer is a bond between the fact table and some number of dimension tables and is often referred to as a star query. In a star query, each dimension table is joined to the fact table using a primary key to foreign key join. Normally…
Tag: STAR_TRANSFORMATION_ENABLED
Optimizing star queries
DBMS_XPLAN.DISPLAY ALTER SESSION SET star_transformation_enabled=TEMP_DISABLE; Database Administration -> Database PL/SQL Packages and Types Reference -> 202 DBMS_XPLAN Database Administration -> Oracle Database Reference -> STAR_TRANSFORMATION_ENABLED brunorsHi! I am Bruno, a Brazilian born and bred. Former Oracle ACE, Computer Scientist, MSc in Data Science, over ten years of experience in companies such as IBM, Epico Tech, and Playtech based in three different countries (Brazil, Hungary, and Sweden) and joined projects remotely in many others. I am super excited to show you my interest in Databases, Cloud, Data Science, Data Engineering, Bigdata,…