This article discusses how to write a SELECT SQL query in Oracle 19c to identify the latest account numbers from specific groups based on previous account numbers.
The dataset comprises Account Number and Previous Number columns, allowing for the determination of the latest account number in each group.
The query utilizes Common Table Expressions (CTEs) and functions like REGEXP_SUBSTR and ROW_NUMBER to isolate the latest account numbers for distinct groups.
By leveraging SQL techniques and structured querying, users can efficiently extract the most recent records from hierarchical data structures in Oracle 19c.