How to Append Initial Line in SAP ABAP

Append Initial Line To In Sap Abap

Just like how the NEW operator is used to create an object, it can also be used in internal table processing to add new rows to it.

Preface

In ABAP 740, we have new to create the table entries. This NEW works similarly like. Lets take a look at what how NEW can be used.

By utilizing the NEW operator, it becomes possible to generate entries in an internal table with minimal coding. This can be achieved as shown below:

When the NEW operator is used to create entries in an Internal table (ITAB), it provides a reference to the data object containing those values.

Provide the relevant value and mention the name of the component.

Once you have completed working on the specific row, conclude it by adding a closing bracket ).

Example 1 — Standard table with Component as TABLE_LINE

In this scenario, we are dealing with a regular table that has a component called TABLE_LINE of type I. If you want to append an initial line to this table without utilizing the NEW operator, there is an alternative approach.

1. Generate the data entity.

3. Add the records to the Field Symbol, which will subsequently be included in the data entity.

The coding for both classical and using the NEW operator can be compared.

The declaration “TYPES t_itab TYPE STANDARD TABLE OF i WITH DEFAULT KEY” creates a table type called “t_itab” which is based on the standard table structure and uses “i” as the default key.

Add the values 100, 0, and 300 to the field using the APPEND statement.

To view the values of both variables while in debug mode.

Example 2 — Sorted table with component as TABLE_LINE

When dealing with a sorted table using the traditional method, it is necessary to read the entry and utilize SY-TABIX to insert it at its appropriate position among the other entries. The NEW operator is also effective when working with a SORTED table. It ensures that the entry is inserted in accordance with its logical sequence within the table, even if they are passed in a different order. This process is straightforward and simple to implement.

TYPES t_itab_sorted TYPE SORTED TABLE OF i WITH UNIQUE KEY table_line.

Retrieve the data from table without transporting any fields, using the key value of 100 for the field “table_line”.

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If the return code (sy-subrc) is not equal to zero, then add the value 100 into at the position specified by sy-tabix.

Retrieve the data from table < ft_s_o > without transporting any fields, using the key value of table_line = 0.

If the return code (sy-subrc) is not equal to 0, then add the value 0 into the at the position specified by sy-tabix.

Retrieve the data from table without transporting any fields, using the key value of 300 for the field “table_line”.

If the value of sy-subrc is not equal to 0, then add the number 300 into at the position specified by sy-tabix.

A new sorted internal table called “dref_sorted” is created with three entries: 100, an empty entry, and 300.

Verifying the values in both sorted tables by using the debug feature.

Example 3 — Sorted table with a specific component

I assume you have now understood how to use the NEW command. In this instance, we will utilize a single element in the sorted table.

DECLARATIONS:

Define a data type called “ty_sorted” with a single field named “num” of type integer.

The classical approach was not considered as it would be similar to Example 2.

A new instance of the “tt_sorted” data type called “dref_sorted_c” is created, with two elements: one element with a value of 100 and another element without a value, followed by an element with a value of 300.

In previous two examples, we didn’t specify the component as there was no component in the NEW statement. But, when you have component, you need to specify the component. If you don’t specify, you would get this error. However, that doesn’t mean that you need to specify the component name NUM when you don’t have value, see the second row.

The type of “100” cannot be converted to the type of “TY_SORTED”.

Example 4 — Table with more components

In this instance, we will be examining the process of handling multiple components. This is similar to example 3, where a new row is initiated by using an opening bracket ( and specifying the component name along with its corresponding value. Once that specific row is completed, it should be concluded with a closing bracket ).

DECLARATIONS:

Define a structure called “ty_data” which consists of the following fields:

– “kunnr” of type “kunnr”

– “name1” of type “name1”

– “ort01” of type “ort01”

– “land1” of type “land1”

This structure will be used to store data in the program.

Declare a table type called “tt_data” which is a standard table of type “ty_data” with the default key.

Declare a field symbol of type tt_data and another field symbol that is similar to the line structure of .

A new data object called “o_data_multi_comp” is being created in SAP ABAP. It belongs to the table type “tt_data” and contains multiple records. Each record has different values for fields such as customer number, name, city, and country.

Example 5 — Table with Deep structure

The situation becomes more intriguing when dealing with deep structures. When handling deep tables, it is necessary to have auxiliary work areas or Field Symbols for inserting the entries. However, by utilizing the NEW operator, you can eliminate this requirement.

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DECLARATIONS:

In the SAP ABAP programming language, we define a new data type called “ty_alv_data”. This data type consists of various fields such as “kunnr” which represents customer number, “name1” for customer name, “ort01” for city name, and “land1” for country code. Additionally, we have another field called “t_color” which is of type lvc_t_scol.

Declare a table type named “tt_alv_data” which is a standard table of structure “ty_alv_data” with the default key.

FIELD-SYMBOLS: is declared as a field symbol of type tt_alv_data. Similarly, is declared as a field symbol that has the same structure as a line in . Additionally, is declared as a field symbol that has the same structure as a line in -t_color.

Add an empty line to the internal table and assign it to the work area .

Add a new empty line to the table and assign it to the variable .

Add an empty line to the table and assign it to the field symbol .

Add the first line to and assign it to .

A new instance of the “tt_alv_data” structure is created and assigned to the variable “o_alv_data”. The initial line of this structure contains data for fields such as customer number, name, city, and country. Additionally, a color table is defined with two rows specifying different colors for certain field names. The second row of the structure includes data for another set of fields related to a different customer.

Adding Initial Line to Sorted Table with Duplicate Values in SAP ABAP

If you try to violate the rules while appending the values in the SORTED table, system will produce the runtime error as expected. Appending the new values follow the same rules as.

DECLARATIONS:

Define a data type called “ty_sorted” with a single field named “num” of type integer.

A variable named “itab_sorted_c” is being assigned a value using the “VALUE” keyword. The value being assigned is of type tt_sorted and consists of multiple entries, each having a field called “num”. The values for this field in the different entries are 100, 300, and 100 respectively.

Table without Explicit Key definition

If you do not include the key specification, it is not possible to use the NEW specification for the table. It is necessary to declare the table with a specified key type.

A value of the generic type “T_ITAB” cannot be constructed.

ABAP 740 Concepts: Table ofs

ABAP 740 introduces a new operator that allows for the creation of entries in internal tables. This feature is discussed in detail on the ABAP Help Blog.

Appending one internal table to another in SAP: How can it be done?

You can add the contents of one internal table to another using the statement APPEND LINES OF itab1 TO itab2. This means that all the rows from itab1 will be added to itab2. The tables can be of any type, such as standard or sorted tables.

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In simpler terms, appending an internal table to another means combining their data together. It is like merging two lists into one big list. For example, if you have a list of names in one table and a list of ages in another table, appending them would result in a single table with both names and ages.

– Appending tables combines their data together.

– You can use the statement APPEND LINES OF itab1 TO itab2.

– Appending makes it easier to work with combined data sets in SAP ABAP programming language.

The meaning of the append keyword in ABAP

APPEND – ABAP Keyword Documentation. APPEND line_spec TO itab [SORTED BY comp] [ result]. This statement appends one or more rows line_spec to an internal index table itab. It is appended so that a new last row is created with respect to the primary table index.

Distinguishing append and insert in ABAP

The distinction lies in the way data is added to a list. When using the append function, a new entry is simply appended at the end of the existing list. On the other hand, by utilizing insert(position, new_entry), it becomes possible to specify and create a new entry precisely at any desired position within the list.

In SAP ABAP programming language, appending an initial line refers to adding a new record or entry at the end of an internal table or structure. This can be achieved using various methods such as APPEND statement or INSERT statement with appropriate index values.

To append an initial line in SAP ABAP, you first define your internal table or structure with all necessary fields and types. Then, using either APPEND statement followed by corresponding field assignments or INSERT statement with proper index value and field assignments, you can add a new record at the end of your data structure.

Appending an initial line allows for flexibility in managing and manipulating data structures within SAP ABAP programs. It enables dynamic expansion of tables and structures while maintaining integrity and consistency throughout program execution.

Append syntax: What is it?

The syntax of the append() method in Python for lists is as follows: list_name.append(element). In this syntax, “list_name” refers to the name of the list you want to add element(s) to, and “element” represents the specific item you wish to add. When using the append() method in Python, it adds the specified element at the end of the given list.

In simpler words, appending means adding something new or additional towards one end of an existing collection or sequence. Similarly, when using append() in Python with lists, it enables us to effortlessly include new elements at the end of our desired list without altering its previous contents.