ABAP Select data from SAP table MCVTTKADD into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP MCVTTKADD 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 MCVTTKADD. 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 MCVTTKADD 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_MCVTTKADD TYPE STANDARD TABLE OF MCVTTKADD,
      WA_MCVTTKADD TYPE MCVTTKADD,
      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: <MCVTTKADD> TYPE MCVTTKADD.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MCVTTKADD
*  INTO TABLE @DATA(IT_MCVTTKADD2).
*--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_MCVTTKADD INDEX 1 INTO DATA(WA_MCVTTKADD2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MCVTTKADD>-ADUMMY = 1.
<MCVTTKADD>-VSTELA = 1.
<MCVTTKADD>-WERKSZ = 1.
<MCVTTKADD>-PSTLZA = 1.
<MCVTTKADD>-PSTLZZ = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MCVTTKADD-ALAND, sy-vline,
  WA_MCVTTKADD-LLAND, sy-vline,
  WA_MCVTTKADD-AZONE, sy-vline,
  WA_MCVTTKADD-LZONE, sy-vline,
  WA_MCVTTKADD-REGIOA, sy-vline,
  WA_MCVTTKADD-REGIOZ, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MCVTTKADD 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_MCVTTKADD 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_MCVTTKADD INTO WA_MCVTTKADD.


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

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

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

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

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

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

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

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

*Conversion exit TDURM, internal->external for field DURLP
CALL FUNCTION 'CONVERSION_EXIT_TDURM_OUTPUT'
  EXPORTING
    input =                      WA_MCVTTKADD-DURLP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MCVTTKADD-DURLP.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TDURM, internal->external for field DURLA
CALL FUNCTION 'CONVERSION_EXIT_TDURM_OUTPUT'
  EXPORTING
    input =                      WA_MCVTTKADD-DURLA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MCVTTKADD-DURLA.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TDURM, internal->external for field DURTP
CALL FUNCTION 'CONVERSION_EXIT_TDURM_OUTPUT'
  EXPORTING
    input =                      WA_MCVTTKADD-DURTP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MCVTTKADD-DURTP.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TDURM, internal->external for field DURTA
CALL FUNCTION 'CONVERSION_EXIT_TDURM_OUTPUT'
  EXPORTING
    input =                      WA_MCVTTKADD-DURTA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MCVTTKADD-DURTA.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TDURM, internal->external for field LATEL
CALL FUNCTION 'CONVERSION_EXIT_TDURM_OUTPUT'
  EXPORTING
    input =                      WA_MCVTTKADD-LATEL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MCVTTKADD-LATEL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TDURM, internal->external for field LATET
CALL FUNCTION 'CONVERSION_EXIT_TDURM_OUTPUT'
  EXPORTING
    input =                      WA_MCVTTKADD-LATET
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MCVTTKADD-LATET.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TDURM, internal->external for field LATES
CALL FUNCTION 'CONVERSION_EXIT_TDURM_OUTPUT'
  EXPORTING
    input =                      WA_MCVTTKADD-LATES
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MCVTTKADD-LATES.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TDURM, internal->external for field LATEE
CALL FUNCTION 'CONVERSION_EXIT_TDURM_OUTPUT'
  EXPORTING
    input =                      WA_MCVTTKADD-LATEE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MCVTTKADD-LATEE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TDURM, internal->external for field LATER
CALL FUNCTION 'CONVERSION_EXIT_TDURM_OUTPUT'
  EXPORTING
    input =                      WA_MCVTTKADD-LATER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MCVTTKADD-LATER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TDURM, internal->external for field LATEB
CALL FUNCTION 'CONVERSION_EXIT_TDURM_OUTPUT'
  EXPORTING
    input =                      WA_MCVTTKADD-LATEB
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MCVTTKADD-LATEB.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TDURM, internal->external for field DURGES
CALL FUNCTION 'CONVERSION_EXIT_TDURM_OUTPUT'
  EXPORTING
    input =                      WA_MCVTTKADD-DURGES
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MCVTTKADD-DURGES.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TDURM, internal->external for field DURFAH
CALL FUNCTION 'CONVERSION_EXIT_TDURM_OUTPUT'
  EXPORTING
    input =                      WA_MCVTTKADD-DURFAH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MCVTTKADD-DURFAH.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TDURM, internal->external for field DURGESP
CALL FUNCTION 'CONVERSION_EXIT_TDURM_OUTPUT'
  EXPORTING
    input =                      WA_MCVTTKADD-DURGESP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MCVTTKADD-DURGESP.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TDURM, internal->external for field DURFAHP
CALL FUNCTION 'CONVERSION_EXIT_TDURM_OUTPUT'
  EXPORTING
    input =                      WA_MCVTTKADD-DURFAHP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MCVTTKADD-DURFAHP.
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_MCVTTKADD_STR, 
ADUMMY TYPE STRING,
VSTELA TYPE STRING,
WERKSZ TYPE STRING,
PSTLZA TYPE STRING,
PSTLZZ TYPE STRING,
ALAND TYPE STRING,
LLAND TYPE STRING,
AZONE TYPE STRING,
LZONE TYPE STRING,
REGIOA TYPE STRING,
REGIOZ TYPE STRING,
STADIS TYPE STRING,
STAVOL TYPE STRING,
STAGEW TYPE STRING,
ANZHV TYPE STRING,
ANZHVG TYPE STRING,
ANZVGES TYPE STRING,
ANZVGL TYPE STRING,
BRGEW_VE TYPE STRING,
NTGEW_VE TYPE STRING,
MAGEW_VE TYPE STRING,
TARAG_VE TYPE STRING,
GEWEI_MAX TYPE STRING,
GEWEI_TAR TYPE STRING,
AUSLG_VE TYPE STRING,
BRVOL_VE TYPE STRING,
NTVOL_VE TYPE STRING,
MAVOL_VE TYPE STRING,
TAVOL_VE TYPE STRING,
VOLEH_TAR TYPE STRING,
VOLEH_MAX TYPE STRING,
AUSLV_VE TYPE STRING,
VHILM_VE TYPE STRING,
DURLP TYPE STRING,
DURLA TYPE STRING,
DURTP TYPE STRING,
DURTA TYPE STRING,
LATEL TYPE STRING,
LATET TYPE STRING,
LATES TYPE STRING,
LATEE TYPE STRING,
LATER TYPE STRING,
LATEB TYPE STRING,
DURGES TYPE STRING,
DURFAH TYPE STRING,
DURGESP TYPE STRING,
DURFAHP TYPE STRING,
STACUR TYPE STRING,
HWAER TYPE STRING,
ALLOW_TWG TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MCVTTKADD_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_MCVTTKADD_STR-ADUMMY sy-vline 
WA_MCVTTKADD_STR-VSTELA sy-vline 
WA_MCVTTKADD_STR-WERKSZ sy-vline 
WA_MCVTTKADD_STR-PSTLZA sy-vline 
WA_MCVTTKADD_STR-PSTLZZ sy-vline 
WA_MCVTTKADD_STR-ALAND sy-vline 
WA_MCVTTKADD_STR-LLAND sy-vline 
WA_MCVTTKADD_STR-AZONE sy-vline 
WA_MCVTTKADD_STR-LZONE sy-vline 
WA_MCVTTKADD_STR-REGIOA sy-vline 
WA_MCVTTKADD_STR-REGIOZ sy-vline 
WA_MCVTTKADD_STR-STADIS sy-vline 
WA_MCVTTKADD_STR-STAVOL sy-vline 
WA_MCVTTKADD_STR-STAGEW sy-vline 
WA_MCVTTKADD_STR-ANZHV sy-vline 
WA_MCVTTKADD_STR-ANZHVG sy-vline 
WA_MCVTTKADD_STR-ANZVGES sy-vline 
WA_MCVTTKADD_STR-ANZVGL sy-vline 
WA_MCVTTKADD_STR-BRGEW_VE sy-vline 
WA_MCVTTKADD_STR-NTGEW_VE sy-vline 
WA_MCVTTKADD_STR-MAGEW_VE sy-vline 
WA_MCVTTKADD_STR-TARAG_VE sy-vline 
WA_MCVTTKADD_STR-GEWEI_MAX sy-vline 
WA_MCVTTKADD_STR-GEWEI_TAR sy-vline 
WA_MCVTTKADD_STR-AUSLG_VE sy-vline 
WA_MCVTTKADD_STR-BRVOL_VE sy-vline 
WA_MCVTTKADD_STR-NTVOL_VE sy-vline 
WA_MCVTTKADD_STR-MAVOL_VE sy-vline 
WA_MCVTTKADD_STR-TAVOL_VE sy-vline 
WA_MCVTTKADD_STR-VOLEH_TAR sy-vline 
WA_MCVTTKADD_STR-VOLEH_MAX sy-vline 
WA_MCVTTKADD_STR-AUSLV_VE sy-vline 
WA_MCVTTKADD_STR-VHILM_VE sy-vline 
WA_MCVTTKADD_STR-DURLP sy-vline 
WA_MCVTTKADD_STR-DURLA sy-vline 
WA_MCVTTKADD_STR-DURTP sy-vline 
WA_MCVTTKADD_STR-DURTA sy-vline 
WA_MCVTTKADD_STR-LATEL sy-vline 
WA_MCVTTKADD_STR-LATET sy-vline 
WA_MCVTTKADD_STR-LATES sy-vline 
WA_MCVTTKADD_STR-LATEE sy-vline 
WA_MCVTTKADD_STR-LATER sy-vline 
WA_MCVTTKADD_STR-LATEB sy-vline 
WA_MCVTTKADD_STR-DURGES sy-vline 
WA_MCVTTKADD_STR-DURFAH sy-vline 
WA_MCVTTKADD_STR-DURGESP sy-vline 
WA_MCVTTKADD_STR-DURFAHP sy-vline 
WA_MCVTTKADD_STR-STACUR sy-vline 
WA_MCVTTKADD_STR-HWAER sy-vline 
WA_MCVTTKADD_STR-ALLOW_TWG sy-vline      INTO ld_text SEPARATED BY SPACE.

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