ABAP Select data from SAP table J_7LAZRV into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP J_7LAZRV 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_7LAZRV. 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_7LAZRV 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_7LAZRV TYPE STANDARD TABLE OF J_7LAZRV,
      WA_J_7LAZRV TYPE J_7LAZRV,
      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_7LAZRV> TYPE J_7LAZRV.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_J_7LAZRV.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM J_7LAZRV
  INTO TABLE IT_J_7LAZRV.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM J_7LAZRV
*  INTO TABLE @DATA(IT_J_7LAZRV2).
*--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_7LAZRV INDEX 1 INTO DATA(WA_J_7LAZRV2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_J_7LAZRV ASSIGNING <J_7LAZRV>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<J_7LAZRV>-MANDT = 1.
<J_7LAZRV>-VRPNR = 1.
<J_7LAZRV>-VVARIANTE = 1.
<J_7LAZRV>-MAKTX = 1.
<J_7LAZRV>-MAKTG = 1.

ENDLOOP.

LOOP AT IT_J_7LAZRV INTO WA_J_7LAZRV.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_J_7LAZRV-VFLKL, sy-vline,
  WA_J_7LAZRV-VPTYP, sy-vline,
  WA_J_7LAZRV-TRENNKZ, sy-vline,
  WA_J_7LAZRV-VPFORMTYP, sy-vline,
  WA_J_7LAZRV-VERSCHNITT, sy-vline,
  WA_J_7LAZRV-VPART, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_J_7LAZRV 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_7LAZRV 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_7LAZRV INTO WA_J_7LAZRV.


*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 VRPNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_J_7LAZRV-VRPNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_7LAZRV-VRPNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ENTNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_J_7LAZRV-ENTNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_7LAZRV-ENTNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_J_7LAZRV-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_7LAZRV-MEINS.
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_7LAZRV_STR, 
MANDT TYPE STRING,
VRPNR TYPE STRING,
VVARIANTE TYPE STRING,
MAKTX TYPE STRING,
MAKTG TYPE STRING,
VFLKL TYPE STRING,
VPTYP TYPE STRING,
TRENNKZ TYPE STRING,
VPFORMTYP TYPE STRING,
VERSCHNITT TYPE STRING,
VPART TYPE STRING,
VPARTG TYPE STRING,
VPARTS TYPE STRING,
VPARTG_V03 TYPE STRING,
KZEVPAG TYPE STRING,
VPARTS_V03 TYPE STRING,
KZEVPAS TYPE STRING,
VPSTAT TYPE STRING,
VAKTIVKZ TYPE STRING,
SPLIT TYPE STRING,
BUKRS TYPE STRING,
LAND1 TYPE STRING,
ENTNR TYPE STRING,
ENTNA TYPE STRING,
NAME1 TYPE STRING,
VRSIO TYPE STRING,
DATAB TYPE STRING,
INFOK TYPE STRING,
FUELLG TYPE STRING,
PLVRS TYPE STRING,
WAERE TYPE STRING,
PLDATAB TYPE STRING,
PLDATBI TYPE STRING,
DATBI TYPE STRING,
MOBJKEY TYPE STRING,
VRSIO_MKEY TYPE STRING,
MEKEY TYPE STRING,
DATAB_MKEY TYPE STRING,
DATBI_MKEY TYPE STRING,
MEINS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_J_7LAZRV_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_7LAZRV_STR-MANDT sy-vline 
WA_J_7LAZRV_STR-VRPNR sy-vline 
WA_J_7LAZRV_STR-VVARIANTE sy-vline 
WA_J_7LAZRV_STR-MAKTX sy-vline 
WA_J_7LAZRV_STR-MAKTG sy-vline 
WA_J_7LAZRV_STR-VFLKL sy-vline 
WA_J_7LAZRV_STR-VPTYP sy-vline 
WA_J_7LAZRV_STR-TRENNKZ sy-vline 
WA_J_7LAZRV_STR-VPFORMTYP sy-vline 
WA_J_7LAZRV_STR-VERSCHNITT sy-vline 
WA_J_7LAZRV_STR-VPART sy-vline 
WA_J_7LAZRV_STR-VPARTG sy-vline 
WA_J_7LAZRV_STR-VPARTS sy-vline 
WA_J_7LAZRV_STR-VPARTG_V03 sy-vline 
WA_J_7LAZRV_STR-KZEVPAG sy-vline 
WA_J_7LAZRV_STR-VPARTS_V03 sy-vline 
WA_J_7LAZRV_STR-KZEVPAS sy-vline 
WA_J_7LAZRV_STR-VPSTAT sy-vline 
WA_J_7LAZRV_STR-VAKTIVKZ sy-vline 
WA_J_7LAZRV_STR-SPLIT sy-vline 
WA_J_7LAZRV_STR-BUKRS sy-vline 
WA_J_7LAZRV_STR-LAND1 sy-vline 
WA_J_7LAZRV_STR-ENTNR sy-vline 
WA_J_7LAZRV_STR-ENTNA sy-vline 
WA_J_7LAZRV_STR-NAME1 sy-vline 
WA_J_7LAZRV_STR-VRSIO sy-vline 
WA_J_7LAZRV_STR-DATAB sy-vline 
WA_J_7LAZRV_STR-INFOK sy-vline 
WA_J_7LAZRV_STR-FUELLG sy-vline 
WA_J_7LAZRV_STR-PLVRS sy-vline 
WA_J_7LAZRV_STR-WAERE sy-vline 
WA_J_7LAZRV_STR-PLDATAB sy-vline 
WA_J_7LAZRV_STR-PLDATBI sy-vline 
WA_J_7LAZRV_STR-DATBI sy-vline 
WA_J_7LAZRV_STR-MOBJKEY sy-vline 
WA_J_7LAZRV_STR-VRSIO_MKEY sy-vline 
WA_J_7LAZRV_STR-MEKEY sy-vline 
WA_J_7LAZRV_STR-DATAB_MKEY sy-vline 
WA_J_7LAZRV_STR-DATBI_MKEY sy-vline 
WA_J_7LAZRV_STR-MEINS sy-vline      INTO ld_text SEPARATED BY SPACE.

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