3.what is difference between include & append structure

Question

Accepted Answer

Include and append structures are used in SAP ABAP to enhance existing data structures.

Include structure is used to add fields from a transparent table or structure to another structure.
Append structure is used to add fields to the end of a transparent table or structure.
Include structure is used when the added fields are already present in the database table or structure.
Append structure is used when the added fields are not present in the database table or structure.
Include structure does not change the structure of the original table or structure.
Append structure extends the structure of the original table or structure.
Include structure is used with the INCLUDE statement.
Append structure is used with the APPEND statement.

Accepted Answer

Include structure add at any position in a custom table.

Append structure add at only last position in both standard and custom table.

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