ABAP Select data from SAP table J_7LS02_S into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP J_7LS02_S 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_7LS02_S. 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_7LS02_S 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_7LS02_S TYPE STANDARD TABLE OF J_7LS02_S,
      WA_J_7LS02_S TYPE J_7LS02_S,
      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_7LS02_S> TYPE J_7LS02_S.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_J_7LS02_S.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM J_7LS02_S
  INTO TABLE IT_J_7LS02_S.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM J_7LS02_S
*  INTO TABLE @DATA(IT_J_7LS02_S2).
*--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_7LS02_S INDEX 1 INTO DATA(WA_J_7LS02_S2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_J_7LS02_S ASSIGNING <J_7LS02_S>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<J_7LS02_S>-MANDT = 1.
<J_7LS02_S>-STOFF = 1.
<J_7LS02_S>-ENTNR = 1.
<J_7LS02_S>-STOFP = 1.
<J_7LS02_S>-STOKL = 1.

ENDLOOP.

LOOP AT IT_J_7LS02_S INTO WA_J_7LS02_S.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_J_7LS02_S-GSTFN, sy-vline,
  WA_J_7LS02_S-GEWEI, sy-vline,
  WA_J_7LS02_S-MATNR, sy-vline,
  WA_J_7LS02_S-FORMEL, sy-vline,
  WA_J_7LS02_S-FRMFRAK, sy-vline,
  WA_J_7LS02_S-STOFFATT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_J_7LS02_S 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_7LS02_S 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_7LS02_S INTO WA_J_7LS02_S.


*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 ENTNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_J_7LS02_S-ENTNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_7LS02_S-ENTNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN3, internal->external for field GSTFN
CALL FUNCTION 'CONVERSION_EXIT_MATN3_OUTPUT'
  EXPORTING
    input =                      WA_J_7LS02_S-GSTFN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_7LS02_S-GSTFN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field GEWEI
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_J_7LS02_S-GEWEI
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_7LS02_S-GEWEI.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_J_7LS02_S-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_7LS02_S-MATNR.
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_7LS02_S_STR, 
MANDT TYPE STRING,
STOFF TYPE STRING,
ENTNR TYPE STRING,
STOFP TYPE STRING,
STOKL TYPE STRING,
GSTFN TYPE STRING,
GEWEI TYPE STRING,
MATNR TYPE STRING,
FORMEL TYPE STRING,
FRMFRAK TYPE STRING,
STOFFATT TYPE STRING,
DATABADM TYPE STRING,
DATBIADM TYPE STRING,
ERSDAADM TYPE STRING,
ERZETADM TYPE STRING,
ERNAMADM TYPE STRING,
LAEDAADM TYPE STRING,
AEZETADM TYPE STRING,
AENAMADM TYPE STRING,
LVORMADM TYPE STRING,
KZ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_J_7LS02_S_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_7LS02_S_STR-MANDT sy-vline 
WA_J_7LS02_S_STR-STOFF sy-vline 
WA_J_7LS02_S_STR-ENTNR sy-vline 
WA_J_7LS02_S_STR-STOFP sy-vline 
WA_J_7LS02_S_STR-STOKL sy-vline 
WA_J_7LS02_S_STR-GSTFN sy-vline 
WA_J_7LS02_S_STR-GEWEI sy-vline 
WA_J_7LS02_S_STR-MATNR sy-vline 
WA_J_7LS02_S_STR-FORMEL sy-vline 
WA_J_7LS02_S_STR-FRMFRAK sy-vline 
WA_J_7LS02_S_STR-STOFFATT sy-vline 
WA_J_7LS02_S_STR-DATABADM sy-vline 
WA_J_7LS02_S_STR-DATBIADM sy-vline 
WA_J_7LS02_S_STR-ERSDAADM sy-vline 
WA_J_7LS02_S_STR-ERZETADM sy-vline 
WA_J_7LS02_S_STR-ERNAMADM sy-vline 
WA_J_7LS02_S_STR-LAEDAADM sy-vline 
WA_J_7LS02_S_STR-AEZETADM sy-vline 
WA_J_7LS02_S_STR-AENAMADM sy-vline 
WA_J_7LS02_S_STR-LVORMADM sy-vline 
WA_J_7LS02_S_STR-KZ sy-vline      INTO ld_text SEPARATED BY SPACE.

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