ABAP Select data from SAP table SAPLNFOS_ALV01 into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

Below is a number of ABAP code snippets to demonstrate how to select data from SAP SAPLNFOS_ALV01 table and store it within an internal table, including using the newer @DATA inline declaration methods. It also shows you various ways to process this data using ABAP work area, inline declaration or field symbols including executing all the relevant CONVERSION_EXIT routines specific to SAPLNFOS_ALV01. See here for more generic Select statement tips.

Sometimes data within SAP is stored within the database table in a different format to what it is displayed to the user. These input/output conversation FM routines are what translates the data between the two formats.

There is also a full declaration of the SAPLNFOS_ALV01 table where each field has a char/string type for you to simply copy and paste. This allows you to use processing that is only available to these field types such as the CONCATENATE statement.

DATA: IT_SAPLNFOS_ALV01 TYPE STANDARD TABLE OF SAPLNFOS_ALV01,
      WA_SAPLNFOS_ALV01 TYPE SAPLNFOS_ALV01,
      GD_STR TYPE STRING.

DATA: lo_typedescr type REF TO cl_abap_typedescr.
DATA: lv_fieldname type fieldname.

FIELD-SYMBOLS: <FIELD> TYPE any.
FIELD-SYMBOLS: <SAPLNFOS_ALV01> TYPE SAPLNFOS_ALV01.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_SAPLNFOS_ALV01.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM SAPLNFOS_ALV01
  INTO TABLE IT_SAPLNFOS_ALV01.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM SAPLNFOS_ALV01
*  INTO TABLE @DATA(IT_SAPLNFOS_ALV012).
*--Further methods of using ABAP code to  select data from SAP database tables

*You can also declare the header/work area using the in-line DATA declaration method
READ TABLE IT_SAPLNFOS_ALV01 INDEX 1 INTO DATA(WA_SAPLNFOS_ALV012).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_SAPLNFOS_ALV01 ASSIGNING <SAPLNFOS_ALV01>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<SAPLNFOS_ALV01>-TABIX = 1.
<SAPLNFOS_ALV01>-KREUZ = 1.
<SAPLNFOS_ALV01>-TDNOPRINT = 1.
<SAPLNFOS_ALV01>-TDTEXT = 1.
<SAPLNFOS_ALV01>-TDSUFFIX2 = 1.

ENDLOOP.

LOOP AT IT_SAPLNFOS_ALV01 INTO WA_SAPLNFOS_ALV01.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_SAPLNFOS_ALV01-OMTYP, sy-vline,
  WA_SAPLNFOS_ALV01-TDTEXT1, sy-vline,
  WA_SAPLNFOS_ALV01-TOMID, sy-vline,
  WA_SAPLNFOS_ALV01-LOMID, sy-vline,
  WA_SAPLNFOS_ALV01-TDFORM, sy-vline,
  WA_SAPLNFOS_ALV01-TDSPRAS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_SAPLNFOS_ALV01 you want to display...

  WRITE:/ sy-uline.
* Aternatively use generic code to Write field values (and NAME) to screen report
  DO.
    ASSIGN COMPONENT sy-index OF STRUCTURE wa_SAPLNFOS_ALV01 TO <field>.
    IF sy-subrc <> 0. EXIT. ENDIF.
    WRITE:/ 'Field Value', <field>, sy-vline.
    gd_str = <field> .
    lo_typedescr ?= CL_ABAP_DATADESCR=>DESCRIBE_BY_DATA( <field> ).
    lv_fieldname = lo_typedescr->GET_RELATIVE_NAME( ).
    WRITE:/ 'Field Name', lv_fieldname.
  ENDDO.

  
*Redo loop but convert all fields from internal to out value  
LOOP AT IT_SAPLNFOS_ALV01 INTO WA_SAPLNFOS_ALV01.


*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Convert all fields to display/output versions using conversion routines
  PERFORM convert_all_field_values CHANGING wa_EKKO.
	 
ENDLOOP.

  
*&---------------------------------------------------------------------*
*& Form convert_all_field_values
*&---------------------------------------------------------------------*
FORM convert_all_field_values CHANGING p_EKKO LIKE wa_EKKO.
DATA: ld_input(1000) TYPE c, ld_output(1000) TYPE C.

*Conversion exit ALPHA, internal->external for field TOMID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_SAPLNFOS_ALV01-TOMID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_SAPLNFOS_ALV01-TOMID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LOMID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_SAPLNFOS_ALV01-LOMID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_SAPLNFOS_ALV01-LOMID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field TDSPRAS
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_SAPLNFOS_ALV01-TDSPRAS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_SAPLNFOS_ALV01-TDSPRAS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit SPDEV, internal->external for field TDDEST
CALL FUNCTION 'CONVERSION_EXIT_SPDEV_OUTPUT'
  EXPORTING
    input =                      WA_SAPLNFOS_ALV01-TDDEST
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_SAPLNFOS_ALV01-TDDEST.
WRITE:/ 'New Value:', ld_input.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_SAPLNFOS_ALV01_STR, 
TABIX TYPE STRING,
KREUZ TYPE STRING,
TDNOPRINT TYPE STRING,
TDTEXT TYPE STRING,
TDSUFFIX2 TYPE STRING,
OMTYP TYPE STRING,
TDTEXT1 TYPE STRING,
TOMID TYPE STRING,
LOMID TYPE STRING,
TDFORM TYPE STRING,
TDSPRAS TYPE STRING,
TDCOPIES TYPE STRING,
TDDEST TYPE STRING,
FBFORM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_SAPLNFOS_ALV01_STR type T_EKKO_STR.

DATA: ld_text TYPE string.

LOOP AT IT_EKKO INTO WA_EKKO.
  MOVE-CORRESPONDING wa_EKKO TO WA_EKKO_STR.
  CONCATENATE: sy-vline
WA_SAPLNFOS_ALV01_STR-TABIX sy-vline 
WA_SAPLNFOS_ALV01_STR-KREUZ sy-vline 
WA_SAPLNFOS_ALV01_STR-TDNOPRINT sy-vline 
WA_SAPLNFOS_ALV01_STR-TDTEXT sy-vline 
WA_SAPLNFOS_ALV01_STR-TDSUFFIX2 sy-vline 
WA_SAPLNFOS_ALV01_STR-OMTYP sy-vline 
WA_SAPLNFOS_ALV01_STR-TDTEXT1 sy-vline 
WA_SAPLNFOS_ALV01_STR-TOMID sy-vline 
WA_SAPLNFOS_ALV01_STR-LOMID sy-vline 
WA_SAPLNFOS_ALV01_STR-TDFORM sy-vline 
WA_SAPLNFOS_ALV01_STR-TDSPRAS sy-vline 
WA_SAPLNFOS_ALV01_STR-TDCOPIES sy-vline 
WA_SAPLNFOS_ALV01_STR-TDDEST sy-vline 
WA_SAPLNFOS_ALV01_STR-FBFORM sy-vline      INTO ld_text SEPARATED BY SPACE.

*Add any further fields from structure WA_EKKO_STR you want to CONCATENATE...
ENDLOOP.
ENDFORM.