Several nested INNER JOINS are inefficient

by Sathiya Kumar

"Using several nested INNER JOIN statements can be inefficient and cause time out if the tables become too big in the future."

Joins here (in ABAP) are not those Native SQL Joins.  If you are talking about the Core RDBMS, which mean Oracle or SQL Server, then Undoubtedly Joins are the best.

In ABAP, these joins are first split by the ABAP processor and then sent to the database, with the increase in DATA in production system, these joins tend to give way if your database keeps growing larger and larger.

You should rather use "FOR ALL ENTRIES IN" (Tabular conditions), which is a much efficient way as far as performance is concerned.


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