Add a parcel and read it back

The packing queue already contains PK-204. A new parcel arrives, and the exercise adds it to the table before reading the second row.

APPEND adds a row

APPEND 'PK-205' TO parcels.

For a standard table, APPEND adds a row at the end. Use it when arrival order is meaningful or when adding one row at a time is the clearest expression.

READ TABLE can retrieve a row

READ TABLE parcels INDEX 2 INTO DATA(result).

This reads the second row by position. In production code, a position may not identify the business object you actually need; if you need to find a parcel by tracking code, use a suitable key or table design and check whether a row was found.

The READ TABLE statement sets sy-subrc; classic ABAP code often checks it to determine success. Follow the language-version and API rules for your environment.

Other choices

For a small ordered list, index-based access is easy to teach. For repeated lookups by a unique identifier, a sorted or hashed table with a meaningful key may be a better fit. Choose the table category based on the operations you need rather than habit.

Practice

Append PK-205, read row 2 into result, and output it using the selected environment’s mechanism. The browser checker checks syntax patterns only.

Sources

• SAP Samples, Internal Tables
• SAP Help Portal, ABAP Keyword Documentation

Version note: Table syntax, keys, and available constructs depend on the target ABAP release/language version.

TYPES ty_parcels TYPE STANDARD TABLE OF string WITH EMPTY KEY.
DATA(parcels) = VALUE ty_parcels( ( 'PK-204' ) ).
APPEND 'PK-205' TO parcels.
READ TABLE parcels INDEX 2 INTO DATA(result).

WRITE result.

out->write( result ).