ABAP Select data from SAP table J_7LAPAA_ITEM into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP J_7LAPAA_ITEM 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 J_7LAPAA_ITEM. 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 J_7LAPAA_ITEM 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_J_7LAPAA_ITEM TYPE STANDARD TABLE OF J_7LAPAA_ITEM,
      WA_J_7LAPAA_ITEM TYPE J_7LAPAA_ITEM,
      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: <J_7LAPAA_ITEM> TYPE J_7LAPAA_ITEM.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_J_7LAPAA_ITEM.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM J_7LAPAA_ITEM
  INTO TABLE IT_J_7LAPAA_ITEM.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM J_7LAPAA_ITEM
*  INTO TABLE @DATA(IT_J_7LAPAA_ITEM2).
*--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_J_7LAPAA_ITEM INDEX 1 INTO DATA(WA_J_7LAPAA_ITEM2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_J_7LAPAA_ITEM ASSIGNING <J_7LAPAA_ITEM>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<J_7LAPAA_ITEM>-MANDT = 1.
<J_7LAPAA_ITEM>-ENTNA = 1.
<J_7LAPAA_ITEM>-DATAB = 1.
<J_7LAPAA_ITEM>-DATBI = 1.
<J_7LAPAA_ITEM>-FMENG = 1.

ENDLOOP.

LOOP AT IT_J_7LAPAA_ITEM INTO WA_J_7LAPAA_ITEM.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_J_7LAPAA_ITEM-KPMEINS, sy-vline,
  WA_J_7LAPAA_ITEM-VRPNR, sy-vline,
  WA_J_7LAPAA_ITEM-VVARIANTE, sy-vline,
  WA_J_7LAPAA_ITEM-VMAKTX, sy-vline,
  WA_J_7LAPAA_ITEM-VFLKL, sy-vline,
  WA_J_7LAPAA_ITEM-SOKOA, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_J_7LAPAA_ITEM 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_J_7LAPAA_ITEM 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_J_7LAPAA_ITEM INTO WA_J_7LAPAA_ITEM.


*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 CUNIT, internal->external for field KPMEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_J_7LAPAA_ITEM-KPMEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_7LAPAA_ITEM-KPMEINS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field VRPNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_J_7LAPAA_ITEM-VRPNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_7LAPAA_ITEM-VRPNR.
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_J_7LAPAA_ITEM_STR, 
MANDT TYPE STRING,
ENTNA TYPE STRING,
DATAB TYPE STRING,
DATBI TYPE STRING,
FMENG TYPE STRING,
KPMEINS TYPE STRING,
VRPNR TYPE STRING,
VVARIANTE TYPE STRING,
VMAKTX TYPE STRING,
VFLKL TYPE STRING,
SOKOA TYPE STRING,
STKENTGE TYPE STRING,
STOFI TYPE STRING,
STOFF TYPE STRING,
GEWENTGE TYPE STRING,
GEWENTGEF TYPE STRING,
PGAAWE TYPE STRING,
SUMMEE TYPE STRING,
WAERK TYPE STRING,
MDFKZ TYPE STRING,
MKZRE TYPE STRING,
ZENKZ TYPE STRING,
SPLIT TYPE STRING,
ZEILENR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_J_7LAPAA_ITEM_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_J_7LAPAA_ITEM_STR-MANDT sy-vline 
WA_J_7LAPAA_ITEM_STR-ENTNA sy-vline 
WA_J_7LAPAA_ITEM_STR-DATAB sy-vline 
WA_J_7LAPAA_ITEM_STR-DATBI sy-vline 
WA_J_7LAPAA_ITEM_STR-FMENG sy-vline 
WA_J_7LAPAA_ITEM_STR-KPMEINS sy-vline 
WA_J_7LAPAA_ITEM_STR-VRPNR sy-vline 
WA_J_7LAPAA_ITEM_STR-VVARIANTE sy-vline 
WA_J_7LAPAA_ITEM_STR-VMAKTX sy-vline 
WA_J_7LAPAA_ITEM_STR-VFLKL sy-vline 
WA_J_7LAPAA_ITEM_STR-SOKOA sy-vline 
WA_J_7LAPAA_ITEM_STR-STKENTGE sy-vline 
WA_J_7LAPAA_ITEM_STR-STOFI sy-vline 
WA_J_7LAPAA_ITEM_STR-STOFF sy-vline 
WA_J_7LAPAA_ITEM_STR-GEWENTGE sy-vline 
WA_J_7LAPAA_ITEM_STR-GEWENTGEF sy-vline 
WA_J_7LAPAA_ITEM_STR-PGAAWE sy-vline 
WA_J_7LAPAA_ITEM_STR-SUMMEE sy-vline 
WA_J_7LAPAA_ITEM_STR-WAERK sy-vline 
WA_J_7LAPAA_ITEM_STR-MDFKZ sy-vline 
WA_J_7LAPAA_ITEM_STR-MKZRE sy-vline 
WA_J_7LAPAA_ITEM_STR-ZENKZ sy-vline 
WA_J_7LAPAA_ITEM_STR-SPLIT sy-vline 
WA_J_7LAPAA_ITEM_STR-ZEILENR sy-vline      INTO ld_text SEPARATED BY SPACE.

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