ABAP Select data from SAP table VMCAR01 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 VMCAR01 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 VMCAR01. 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 VMCAR01 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_VMCAR01 TYPE STANDARD TABLE OF VMCAR01,
      WA_VMCAR01 TYPE VMCAR01,
      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: <VMCAR01> TYPE VMCAR01.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_VMCAR01.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM VMCAR01
  INTO TABLE IT_VMCAR01.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VMCAR01
*  INTO TABLE @DATA(IT_VMCAR012).
*--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_VMCAR01 INDEX 1 INTO DATA(WA_VMCAR012).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_VMCAR01 ASSIGNING <VMCAR01>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VMCAR01>-SIDGDEMAND = 1.
<VMCAR01>-SIDLDEMAND = 1.
<VMCAR01>-NAME1 = 1.
<VMCAR01>-NAME2 = 1.
<VMCAR01>-MC_NAME1 = 1.

ENDLOOP.

LOOP AT IT_VMCAR01 INTO WA_VMCAR01.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VMCAR01-MC_NAME2, sy-vline,
  WA_VMCAR01-BIRTH_DATE, sy-vline,
  WA_VMCAR01-PARTNR, sy-vline,
  WA_VMCAR01-XMEMOTEXT, sy-vline,
  WA_VMCAR01-RERF, sy-vline,
  WA_VMCAR01-DERF, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VMCAR01 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_VMCAR01 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_VMCAR01 INTO WA_VMCAR01.


*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 SIDGDEMAND
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_VMCAR01-SIDGDEMAND
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VMCAR01-SIDGDEMAND.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PARTNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_VMCAR01-PARTNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VMCAR01-PARTNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field AREAKEY
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_VMCAR01-AREAKEY
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VMCAR01-AREAKEY.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field WBSAREAKEY
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_VMCAR01-WBSAREAKEY
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VMCAR01-WBSAREAKEY.
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_VMCAR01_STR, 
SIDGDEMAND TYPE STRING,
SIDLDEMAND TYPE STRING,
NAME1 TYPE STRING,
NAME2 TYPE STRING,
MC_NAME1 TYPE STRING,
MC_NAME2 TYPE STRING,
BIRTH_DATE TYPE STRING,
PARTNR TYPE STRING,
XMEMOTEXT TYPE STRING,
RERF TYPE STRING,
DERF TYPE STRING,
RBEAR TYPE STRING,
DBEAR TYPE STRING,
SOBJGROUP TYPE STRING,
DFREEFROM TYPE STRING,
DFREETILL TYPE STRING,
CURRKEY TYPE STRING,
AREAKEY TYPE STRING,
PRENTEXCL TYPE STRING,
PRENTINCL TYPE STRING,
PRENTAREAEXCL TYPE STRING,
PRENTAREAINCL TYPE STRING,
PSIZEALL TYPE STRING,
PSIZEUSE TYPE STRING,
NROOMFULL TYPE STRING,
NROOMHALF TYPE STRING,
SLOCALGRP TYPE STRING,
STRAFFROU TYPE STRING,
SAGEGROUP TYPE STRING,
SPARKGRP TYPE STRING,
OCCUPOBLIGO TYPE STRING,
SCOUNTRY TYPE STRING,
SREGIO TYPE STRING,
SCOUNC TYPE STRING,
SCITYC TYPE STRING,
ZIPSTRING TYPE STRING,
LOCATION TYPE STRING,
SUBLOCAT TYPE STRING,
STREET TYPE STRING,
AUTHGRP TYPE STRING,
PROCESSMARK TYPE STRING,
PRESELECTION TYPE STRING,
PROCESSSTAT TYPE STRING,
PARTFROM TYPE STRING,
PARTWHY TYPE STRING,
PARTWAY TYPE STRING,
DAPPLY TYPE STRING,
SCRDSTNDG TYPE STRING,
DWBS TYPE STRING,
DWBSVALID TYPE STRING,
WBSPRIORITY TYPE STRING,
WBSPERSON TYPE STRING,
WBSAPPEND TYPE STRING,
WBSNROOMFULL TYPE STRING,
WBSNROOMHALF TYPE STRING,
WBSAREAKEY TYPE STRING,
WBSPSIZE TYPE STRING,
INCOME_CUR TYPE STRING,
NET_INCOME TYPE STRING,
NATION TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VMCAR01_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_VMCAR01_STR-SIDGDEMAND sy-vline 
WA_VMCAR01_STR-SIDLDEMAND sy-vline 
WA_VMCAR01_STR-NAME1 sy-vline 
WA_VMCAR01_STR-NAME2 sy-vline 
WA_VMCAR01_STR-MC_NAME1 sy-vline 
WA_VMCAR01_STR-MC_NAME2 sy-vline 
WA_VMCAR01_STR-BIRTH_DATE sy-vline 
WA_VMCAR01_STR-PARTNR sy-vline 
WA_VMCAR01_STR-XMEMOTEXT sy-vline 
WA_VMCAR01_STR-RERF sy-vline 
WA_VMCAR01_STR-DERF sy-vline 
WA_VMCAR01_STR-RBEAR sy-vline 
WA_VMCAR01_STR-DBEAR sy-vline 
WA_VMCAR01_STR-SOBJGROUP sy-vline 
WA_VMCAR01_STR-DFREEFROM sy-vline 
WA_VMCAR01_STR-DFREETILL sy-vline 
WA_VMCAR01_STR-CURRKEY sy-vline 
WA_VMCAR01_STR-AREAKEY sy-vline 
WA_VMCAR01_STR-PRENTEXCL sy-vline 
WA_VMCAR01_STR-PRENTINCL sy-vline 
WA_VMCAR01_STR-PRENTAREAEXCL sy-vline 
WA_VMCAR01_STR-PRENTAREAINCL sy-vline 
WA_VMCAR01_STR-PSIZEALL sy-vline 
WA_VMCAR01_STR-PSIZEUSE sy-vline 
WA_VMCAR01_STR-NROOMFULL sy-vline 
WA_VMCAR01_STR-NROOMHALF sy-vline 
WA_VMCAR01_STR-SLOCALGRP sy-vline 
WA_VMCAR01_STR-STRAFFROU sy-vline 
WA_VMCAR01_STR-SAGEGROUP sy-vline 
WA_VMCAR01_STR-SPARKGRP sy-vline 
WA_VMCAR01_STR-OCCUPOBLIGO sy-vline 
WA_VMCAR01_STR-SCOUNTRY sy-vline 
WA_VMCAR01_STR-SREGIO sy-vline 
WA_VMCAR01_STR-SCOUNC sy-vline 
WA_VMCAR01_STR-SCITYC sy-vline 
WA_VMCAR01_STR-ZIPSTRING sy-vline 
WA_VMCAR01_STR-LOCATION sy-vline 
WA_VMCAR01_STR-SUBLOCAT sy-vline 
WA_VMCAR01_STR-STREET sy-vline 
WA_VMCAR01_STR-AUTHGRP sy-vline 
WA_VMCAR01_STR-PROCESSMARK sy-vline 
WA_VMCAR01_STR-PRESELECTION sy-vline 
WA_VMCAR01_STR-PROCESSSTAT sy-vline 
WA_VMCAR01_STR-PARTFROM sy-vline 
WA_VMCAR01_STR-PARTWHY sy-vline 
WA_VMCAR01_STR-PARTWAY sy-vline 
WA_VMCAR01_STR-DAPPLY sy-vline 
WA_VMCAR01_STR-SCRDSTNDG sy-vline 
WA_VMCAR01_STR-DWBS sy-vline 
WA_VMCAR01_STR-DWBSVALID sy-vline 
WA_VMCAR01_STR-WBSPRIORITY sy-vline 
WA_VMCAR01_STR-WBSPERSON sy-vline 
WA_VMCAR01_STR-WBSAPPEND sy-vline 
WA_VMCAR01_STR-WBSNROOMFULL sy-vline 
WA_VMCAR01_STR-WBSNROOMHALF sy-vline 
WA_VMCAR01_STR-WBSAREAKEY sy-vline 
WA_VMCAR01_STR-WBSPSIZE sy-vline 
WA_VMCAR01_STR-INCOME_CUR sy-vline 
WA_VMCAR01_STR-NET_INCOME sy-vline 
WA_VMCAR01_STR-NATION sy-vline      INTO ld_text SEPARATED BY SPACE.

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