ABAP Select data from SAP table J_7LIZARF into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP J_7LIZARF 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_7LIZARF. 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_7LIZARF 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_7LIZARF TYPE STANDARD TABLE OF J_7LIZARF,
      WA_J_7LIZARF TYPE J_7LIZARF,
      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_7LIZARF> TYPE J_7LIZARF.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_J_7LIZARF.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM J_7LIZARF
  INTO TABLE IT_J_7LIZARF.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM J_7LIZARF
*  INTO TABLE @DATA(IT_J_7LIZARF2).
*--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_7LIZARF INDEX 1 INTO DATA(WA_J_7LIZARF2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_J_7LIZARF ASSIGNING <J_7LIZARF>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<J_7LIZARF>-MANDT = 1.
<J_7LIZARF>-MATNR = 1.
<J_7LIZARF>-VARIANTE = 1.
<J_7LIZARF>-BUKRS = 1.
<J_7LIZARF>-LAND1 = 1.

ENDLOOP.

LOOP AT IT_J_7LIZARF INTO WA_J_7LIZARF.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_J_7LIZARF-RMATN, sy-vline,
  WA_J_7LIZARF-AVARIANTE, sy-vline,
  WA_J_7LIZARF-VRKME, sy-vline,
  WA_J_7LIZARF-ENTNR, sy-vline,
  WA_J_7LIZARF-ENTNA, sy-vline,
  WA_J_7LIZARF-DATBI, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_J_7LIZARF 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_7LIZARF 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_7LIZARF INTO WA_J_7LIZARF.


*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 MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_J_7LIZARF-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_7LIZARF-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field RMATN
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_J_7LIZARF-RMATN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_7LIZARF-RMATN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field VRKME
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_J_7LIZARF-VRKME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_7LIZARF-VRKME.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ENTNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_J_7LIZARF-ENTNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_7LIZARF-ENTNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field GEWEI
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_J_7LIZARF-GEWEI
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_7LIZARF-GEWEI.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_J_7LIZARF-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_7LIZARF-MEINS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit EAN11, internal->external for field EAN11
CALL FUNCTION 'CONVERSION_EXIT_EAN11_OUTPUT'
  EXPORTING
    input =                      WA_J_7LIZARF-EAN11
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_7LIZARF-EAN11.
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_7LIZARF_STR, 
MANDT TYPE STRING,
MATNR TYPE STRING,
VARIANTE TYPE STRING,
BUKRS TYPE STRING,
LAND1 TYPE STRING,
RMATN TYPE STRING,
AVARIANTE TYPE STRING,
VRKME TYPE STRING,
ENTNR TYPE STRING,
ENTNA TYPE STRING,
DATBI TYPE STRING,
DATAB TYPE STRING,
MAKTX TYPE STRING,
STOFF TYPE STRING,
STOKTX TYPE STRING,
KPEIN TYPE STRING,
GEWEI TYPE STRING,
STGEW TYPE STRING,
VFLKL TYPE STRING,
VFLKLKTX TYPE STRING,
MEINS TYPE STRING,
FMENGR TYPE STRING,
EAN11 TYPE STRING,
SOKOA TYPE STRING,
STATUS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_J_7LIZARF_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_7LIZARF_STR-MANDT sy-vline 
WA_J_7LIZARF_STR-MATNR sy-vline 
WA_J_7LIZARF_STR-VARIANTE sy-vline 
WA_J_7LIZARF_STR-BUKRS sy-vline 
WA_J_7LIZARF_STR-LAND1 sy-vline 
WA_J_7LIZARF_STR-RMATN sy-vline 
WA_J_7LIZARF_STR-AVARIANTE sy-vline 
WA_J_7LIZARF_STR-VRKME sy-vline 
WA_J_7LIZARF_STR-ENTNR sy-vline 
WA_J_7LIZARF_STR-ENTNA sy-vline 
WA_J_7LIZARF_STR-DATBI sy-vline 
WA_J_7LIZARF_STR-DATAB sy-vline 
WA_J_7LIZARF_STR-MAKTX sy-vline 
WA_J_7LIZARF_STR-STOFF sy-vline 
WA_J_7LIZARF_STR-STOKTX sy-vline 
WA_J_7LIZARF_STR-KPEIN sy-vline 
WA_J_7LIZARF_STR-GEWEI sy-vline 
WA_J_7LIZARF_STR-STGEW sy-vline 
WA_J_7LIZARF_STR-VFLKL sy-vline 
WA_J_7LIZARF_STR-VFLKLKTX sy-vline 
WA_J_7LIZARF_STR-MEINS sy-vline 
WA_J_7LIZARF_STR-FMENGR sy-vline 
WA_J_7LIZARF_STR-EAN11 sy-vline 
WA_J_7LIZARF_STR-SOKOA sy-vline 
WA_J_7LIZARF_STR-STATUS sy-vline      INTO ld_text SEPARATED BY SPACE.

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