ABAP Select data from SAP table J_7LC02_V into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP J_7LC02_V 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_7LC02_V. 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_7LC02_V 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_7LC02_V TYPE STANDARD TABLE OF J_7LC02_V,
      WA_J_7LC02_V TYPE J_7LC02_V,
      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_7LC02_V> TYPE J_7LC02_V.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_J_7LC02_V.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM J_7LC02_V
  INTO TABLE IT_J_7LC02_V.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM J_7LC02_V
*  INTO TABLE @DATA(IT_J_7LC02_V2).
*--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_7LC02_V INDEX 1 INTO DATA(WA_J_7LC02_V2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_J_7LC02_V ASSIGNING <J_7LC02_V>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<J_7LC02_V>-MANDT = 1.
<J_7LC02_V>-BUKRS = 1.
<J_7LC02_V>-BUTXT = 1.
<J_7LC02_V>-RBUKR = 1.
<J_7LC02_V>-RBUKP = 1.

ENDLOOP.

LOOP AT IT_J_7LC02_V INTO WA_J_7LC02_V.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_J_7LC02_V-RBUKW, sy-vline,
  WA_J_7LC02_V-WAERS, sy-vline,
  WA_J_7LC02_V-WAERA, sy-vline,
  WA_J_7LC02_V-BBBNR, sy-vline,
  WA_J_7LC02_V-BBSNR, sy-vline,
  WA_J_7LC02_V-BBNR2, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_J_7LC02_V 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_7LC02_V 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_7LC02_V INTO WA_J_7LC02_V.


*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 PARVW, internal->external for field PARVW
CALL FUNCTION 'CONVERSION_EXIT_PARVW_OUTPUT'
  EXPORTING
    input =                      WA_J_7LC02_V-PARVW
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_7LC02_V-PARVW.
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_7LC02_V_STR, 
MANDT TYPE STRING,
BUKRS TYPE STRING,
BUTXT TYPE STRING,
RBUKR TYPE STRING,
RBUKP TYPE STRING,
RBUKW TYPE STRING,
WAERS TYPE STRING,
WAERA TYPE STRING,
BBBNR TYPE STRING,
BBSNR TYPE STRING,
BBNR2 TYPE STRING,
BBSNR2 TYPE STRING,
BBNR3 TYPE STRING,
BBSNR3 TYPE STRING,
BBNR4 TYPE STRING,
BBSNR4 TYPE STRING,
KONZS TYPE STRING,
KOOPN TYPE STRING,
HDLST TYPE STRING,
WERKS TYPE STRING,
STKLZ TYPE STRING,
NOKSTX TYPE STRING,
WERKSX TYPE STRING,
VZWRKX TYPE STRING,
STLANX TYPE STRING,
STBOMX TYPE STRING,
STLVMX TYPE STRING,
STLFSC TYPE STRING,
STLPIC TYPE STRING,
STLALT TYPE STRING,
STLSTA TYPE STRING,
STLLAB TYPE STRING,
STLUNS TYPE STRING,
STLPLH TYPE STRING,
STLPLI TYPE STRING,
PLNTY TYPE STRING,
FREIFX TYPE STRING,
STLWWH TYPE STRING,
FKEYX TYPE STRING,
FKUNTAB TYPE STRING,
FKUNFNA TYPE STRING,
PARVW TYPE STRING,
MMARTX TYPE STRING,
LVORMADM TYPE STRING,
ERSDAADM TYPE STRING,
ERZETADM TYPE STRING,
ERNAMADM TYPE STRING,
LAEDAADM TYPE STRING,
AEZETADM TYPE STRING,
AENAMADM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_J_7LC02_V_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_7LC02_V_STR-MANDT sy-vline 
WA_J_7LC02_V_STR-BUKRS sy-vline 
WA_J_7LC02_V_STR-BUTXT sy-vline 
WA_J_7LC02_V_STR-RBUKR sy-vline 
WA_J_7LC02_V_STR-RBUKP sy-vline 
WA_J_7LC02_V_STR-RBUKW sy-vline 
WA_J_7LC02_V_STR-WAERS sy-vline 
WA_J_7LC02_V_STR-WAERA sy-vline 
WA_J_7LC02_V_STR-BBBNR sy-vline 
WA_J_7LC02_V_STR-BBSNR sy-vline 
WA_J_7LC02_V_STR-BBNR2 sy-vline 
WA_J_7LC02_V_STR-BBSNR2 sy-vline 
WA_J_7LC02_V_STR-BBNR3 sy-vline 
WA_J_7LC02_V_STR-BBSNR3 sy-vline 
WA_J_7LC02_V_STR-BBNR4 sy-vline 
WA_J_7LC02_V_STR-BBSNR4 sy-vline 
WA_J_7LC02_V_STR-KONZS sy-vline 
WA_J_7LC02_V_STR-KOOPN sy-vline 
WA_J_7LC02_V_STR-HDLST sy-vline 
WA_J_7LC02_V_STR-WERKS sy-vline 
WA_J_7LC02_V_STR-STKLZ sy-vline 
WA_J_7LC02_V_STR-NOKSTX sy-vline 
WA_J_7LC02_V_STR-WERKSX sy-vline 
WA_J_7LC02_V_STR-VZWRKX sy-vline 
WA_J_7LC02_V_STR-STLANX sy-vline 
WA_J_7LC02_V_STR-STBOMX sy-vline 
WA_J_7LC02_V_STR-STLVMX sy-vline 
WA_J_7LC02_V_STR-STLFSC sy-vline 
WA_J_7LC02_V_STR-STLPIC sy-vline 
WA_J_7LC02_V_STR-STLALT sy-vline 
WA_J_7LC02_V_STR-STLSTA sy-vline 
WA_J_7LC02_V_STR-STLLAB sy-vline 
WA_J_7LC02_V_STR-STLUNS sy-vline 
WA_J_7LC02_V_STR-STLPLH sy-vline 
WA_J_7LC02_V_STR-STLPLI sy-vline 
WA_J_7LC02_V_STR-PLNTY sy-vline 
WA_J_7LC02_V_STR-FREIFX sy-vline 
WA_J_7LC02_V_STR-STLWWH sy-vline 
WA_J_7LC02_V_STR-FKEYX sy-vline 
WA_J_7LC02_V_STR-FKUNTAB sy-vline 
WA_J_7LC02_V_STR-FKUNFNA sy-vline 
WA_J_7LC02_V_STR-PARVW sy-vline 
WA_J_7LC02_V_STR-MMARTX sy-vline 
WA_J_7LC02_V_STR-LVORMADM sy-vline 
WA_J_7LC02_V_STR-ERSDAADM sy-vline 
WA_J_7LC02_V_STR-ERZETADM sy-vline 
WA_J_7LC02_V_STR-ERNAMADM sy-vline 
WA_J_7LC02_V_STR-LAEDAADM sy-vline 
WA_J_7LC02_V_STR-AEZETADM sy-vline 
WA_J_7LC02_V_STR-AENAMADM sy-vline      INTO ld_text SEPARATED BY SPACE.

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