Whenever more than one line needs to be read, inserted or deleted from a database table, it is more efficient to work with an internal table than to read, insert or delete the lines one by one inside a loop.
== Noncompliant Code Example
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LOOP AT TAB INTO TAB_WA.
INSERT INTO CUSTOMERS VALUES TAB_WA.
ENDLOOP.
== Compliant Solution
INSERT CUSTOMERS FROM TABLE TAB.
