ABAP Select data from SAP table LVVOR into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP LVVOR 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 LVVOR. 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 LVVOR 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_LVVOR TYPE STANDARD TABLE OF LVVOR,
      WA_LVVOR TYPE LVVOR,
      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: <LVVOR> TYPE LVVOR.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM LVVOR
*  INTO TABLE @DATA(IT_LVVOR2).
*--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_LVVOR INDEX 1 INTO DATA(WA_LVVOR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<LVVOR>-MANDT = 1.
<LVVOR>-LGNUM = 1.
<LVVOR>-VORID = 1.
<LVVOR>-WRKST = 1.
<LVVOR>-STORD = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_LVVOR-PACKNR, sy-vline,
  WA_LVVOR-PIID, sy-vline,
  WA_LVVOR-EXEMT, sy-vline,
  WA_LVVOR-WCSEQ, sy-vline,
  WA_LVVOR-ACTSQ, sy-vline,
  WA_LVVOR-ACTDU, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_LVVOR 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_LVVOR 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_LVVOR INTO WA_LVVOR.


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

*Conversion exit TSHME, internal->external for field CRETS
CALL FUNCTION 'CONVERSION_EXIT_TSHME_OUTPUT'
  EXPORTING
    input =                      WA_LVVOR-CRETS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_LVVOR-CRETS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSHME, internal->external for field UPDTS
CALL FUNCTION 'CONVERSION_EXIT_TSHME_OUTPUT'
  EXPORTING
    input =                      WA_LVVOR-UPDTS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_LVVOR-UPDTS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSHME, internal->external for field UPSTS
CALL FUNCTION 'CONVERSION_EXIT_TSHME_OUTPUT'
  EXPORTING
    input =                      WA_LVVOR-UPSTS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_LVVOR-UPSTS.
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_LVVOR_STR, 
MANDT TYPE STRING,
LGNUM TYPE STRING,
VORID TYPE STRING,
WRKST TYPE STRING,
STORD TYPE STRING,
PACKNR TYPE STRING,
PIID TYPE STRING,
EXEMT TYPE STRING,
WCSEQ TYPE STRING,
ACTSQ TYPE STRING,
ACTDU TYPE STRING,
BILLB TYPE STRING,
CRETS TYPE STRING,
CREUN TYPE STRING,
UPDTS TYPE STRING,
UPDUN TYPE STRING,
UPSTS TYPE STRING,
WORKR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_LVVOR_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_LVVOR_STR-MANDT sy-vline 
WA_LVVOR_STR-LGNUM sy-vline 
WA_LVVOR_STR-VORID sy-vline 
WA_LVVOR_STR-WRKST sy-vline 
WA_LVVOR_STR-STORD sy-vline 
WA_LVVOR_STR-PACKNR sy-vline 
WA_LVVOR_STR-PIID sy-vline 
WA_LVVOR_STR-EXEMT sy-vline 
WA_LVVOR_STR-WCSEQ sy-vline 
WA_LVVOR_STR-ACTSQ sy-vline 
WA_LVVOR_STR-ACTDU sy-vline 
WA_LVVOR_STR-BILLB sy-vline 
WA_LVVOR_STR-CRETS sy-vline 
WA_LVVOR_STR-CREUN sy-vline 
WA_LVVOR_STR-UPDTS sy-vline 
WA_LVVOR_STR-UPDUN sy-vline 
WA_LVVOR_STR-UPSTS sy-vline 
WA_LVVOR_STR-WORKR sy-vline      INTO ld_text SEPARATED BY SPACE.

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