ABAP Select data from SAP table LXVAS_PACKKP_ADD_FIELDS into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP LXVAS_PACKKP_ADD_FIELDS 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 LXVAS_PACKKP_ADD_FIELDS. 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 LXVAS_PACKKP_ADD_FIELDS 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_LXVAS_PACKKP_ADD_FIELDS TYPE STANDARD TABLE OF LXVAS_PACKKP_ADD_FIELDS,
      WA_LXVAS_PACKKP_ADD_FIELDS TYPE LXVAS_PACKKP_ADD_FIELDS,
      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: <LXVAS_PACKKP_ADD_FIELDS> TYPE LXVAS_PACKKP_ADD_FIELDS.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM LXVAS_PACKKP_ADD_FIELDS
*  INTO TABLE @DATA(IT_LXVAS_PACKKP_ADD_FIELDS2).
*--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_LXVAS_PACKKP_ADD_FIELDS INDEX 1 INTO DATA(WA_LXVAS_PACKKP_ADD_FIELDS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<LXVAS_PACKKP_ADD_FIELDS>-LGNUM = 1.
<LXVAS_PACKKP_ADD_FIELDS>-STDTM = 1.
<LXVAS_PACKKP_ADD_FIELDS>-VTMRT = 1.
<LXVAS_PACKKP_ADD_FIELDS>-EXEMT = 1.
<LXVAS_PACKKP_ADD_FIELDS>-DSPTX = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_LXVAS_PACKKP_ADD_FIELDS-ACTSQ, sy-vline,
  WA_LXVAS_PACKKP_ADD_FIELDS-HDRWC, sy-vline,
  WA_LXVAS_PACKKP_ADD_FIELDS-BILLP, sy-vline,
  WA_LXVAS_PACKKP_ADD_FIELDS-SHIPP, sy-vline,
  WA_LXVAS_PACKKP_ADD_FIELDS-VENDR, sy-vline,
  WA_LXVAS_PACKKP_ADD_FIELDS-PURIR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_LXVAS_PACKKP_ADD_FIELDS 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_LXVAS_PACKKP_ADD_FIELDS 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_LXVAS_PACKKP_ADD_FIELDS INTO WA_LXVAS_PACKKP_ADD_FIELDS.


*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 BILLP
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_LXVAS_PACKKP_ADD_FIELDS-BILLP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_LXVAS_PACKKP_ADD_FIELDS-BILLP.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

*Conversion exit MATN1, internal->external for field SMTNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_LXVAS_PACKKP_ADD_FIELDS-SMTNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_LXVAS_PACKKP_ADD_FIELDS-SMTNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field TMUOM
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_LXVAS_PACKKP_ADD_FIELDS-TMUOM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_LXVAS_PACKKP_ADD_FIELDS-TMUOM.
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_LXVAS_PACKKP_ADD_FIELDS_STR, 
LGNUM TYPE STRING,
STDTM TYPE STRING,
VTMRT TYPE STRING,
EXEMT TYPE STRING,
DSPTX TYPE STRING,
ACTSQ TYPE STRING,
HDRWC TYPE STRING,
BILLP TYPE STRING,
SHIPP TYPE STRING,
VENDR TYPE STRING,
PURIR TYPE STRING,
PIRTX TYPE STRING,
AGRMT TYPE STRING,
AGRTX TYPE STRING,
SMTNR TYPE STRING,
TMUOM TYPE STRING,
CHPPC TYPE STRING,
CHPTM TYPE STRING,
CHPVP TYPE STRING,
CHPVT TYPE STRING,
RQSCF TYPE STRING,
INTLV TYPE STRING,
HU_TYPE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_LXVAS_PACKKP_ADD_FIELDS_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_LXVAS_PACKKP_ADD_FIELDS_STR-LGNUM sy-vline 
WA_LXVAS_PACKKP_ADD_FIELDS_STR-STDTM sy-vline 
WA_LXVAS_PACKKP_ADD_FIELDS_STR-VTMRT sy-vline 
WA_LXVAS_PACKKP_ADD_FIELDS_STR-EXEMT sy-vline 
WA_LXVAS_PACKKP_ADD_FIELDS_STR-DSPTX sy-vline 
WA_LXVAS_PACKKP_ADD_FIELDS_STR-ACTSQ sy-vline 
WA_LXVAS_PACKKP_ADD_FIELDS_STR-HDRWC sy-vline 
WA_LXVAS_PACKKP_ADD_FIELDS_STR-BILLP sy-vline 
WA_LXVAS_PACKKP_ADD_FIELDS_STR-SHIPP sy-vline 
WA_LXVAS_PACKKP_ADD_FIELDS_STR-VENDR sy-vline 
WA_LXVAS_PACKKP_ADD_FIELDS_STR-PURIR sy-vline 
WA_LXVAS_PACKKP_ADD_FIELDS_STR-PIRTX sy-vline 
WA_LXVAS_PACKKP_ADD_FIELDS_STR-AGRMT sy-vline 
WA_LXVAS_PACKKP_ADD_FIELDS_STR-AGRTX sy-vline 
WA_LXVAS_PACKKP_ADD_FIELDS_STR-SMTNR sy-vline 
WA_LXVAS_PACKKP_ADD_FIELDS_STR-TMUOM sy-vline 
WA_LXVAS_PACKKP_ADD_FIELDS_STR-CHPPC sy-vline 
WA_LXVAS_PACKKP_ADD_FIELDS_STR-CHPTM sy-vline 
WA_LXVAS_PACKKP_ADD_FIELDS_STR-CHPVP sy-vline 
WA_LXVAS_PACKKP_ADD_FIELDS_STR-CHPVT sy-vline 
WA_LXVAS_PACKKP_ADD_FIELDS_STR-RQSCF sy-vline 
WA_LXVAS_PACKKP_ADD_FIELDS_STR-INTLV sy-vline 
WA_LXVAS_PACKKP_ADD_FIELDS_STR-HU_TYPE sy-vline      INTO ld_text SEPARATED BY SPACE.

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