BEx Variable Enhancement by Customer Exit: Essential Guide for a BW developer (English Edition)

This book is brief information on how to use customer exit variables in BEX queries. Query designer is a tool of SAP BW itself which can be used to create reports. By using customer exits, lot of functionality can be added and queries can be made more flexible which could not be possible otherwise.
This requires knowledge of ABAP and this book helps in filling the gap by providing sample ABAP program snippets to help the BW developer work quickly on customer exits rather than spending time on the syntax.