Educational Blog for Software Engineering
Educational Blog for Software Engineering
CONNECT BY PRIOR clause is Oracle provided a great solution for hierarchical queries but connect by prior in Oracle performance issue are headache. It’s because
Oracle provides this nice data retrieving mechanism for low occurrence of DML operation tables. oracle bitmap index is proposed for low cardinality columns. Those kinds
This article explains how to create an index in Oracle and the Types of indexes making considerable performance improvements. Here 19 ways to create an
Oracle function based index enhances the performance with queries that retrieve data using a custom index according to usage. This will improve the performance when
Performance improvement is not a stick into theory. It’s the same with EXISTS vs IN keywords. It’s practical. In certain cases, EXISTS does well for
