SAP / SAP Beginner (0 to 2 yrs) Interview questions
What is an internal table in ABAP?
An internal table is ABAP's in-memory equivalent of an array or list of structured rows — used to temporarily hold and process a set of data (often fetched from a database table) entirely within a running program, without needing to re-query the database for every operation on that data.
DATA: lt_customers TYPE TABLE OF kna1. SELECT * FROM kna1 INTO TABLE lt_customers WHERE land1 = 'US'. LOOP AT lt_customers INTO DATA(ls_customer). WRITE: / ls_customer-kunnr, ls_customer-name1. ENDLOOP.
Internal tables exist only for the duration of the program's execution (or until explicitly cleared); they're not persistent storage. They're the standard way ABAP programs work with sets of rows in memory, whether that data originated from a database query, was built up manually, or was passed in from another part of the program.
What is an internal table used for in ABAP?
Does an internal table's data persist after the program finishes running?
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