ABAP Select data from SAP table MVKE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MVKE
*  INTO TABLE @DATA(IT_MVKE2).
*--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_MVKE INDEX 1 INTO DATA(WA_MVKE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MVKE>-MANDT = 1.
<MVKE>-MATNR = 1.
<MVKE>-VKORG = 1.
<MVKE>-VTWEG = 1.
<MVKE>-LVORM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MVKE-VERSG, sy-vline,
  WA_MVKE-BONUS, sy-vline,
  WA_MVKE-PROVG, sy-vline,
  WA_MVKE-SKTOF, sy-vline,
  WA_MVKE-VMSTA, sy-vline,
  WA_MVKE-VMSTD, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MVKE 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_MVKE 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_MVKE INTO WA_MVKE.


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

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

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

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

*Conversion exit CUNIT, internal->external for field /BEV1/RPBEZME
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_MVKE-/BEV1/RPBEZME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MVKE-/BEV1/RPBEZME.
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_MVKE_STR, 
MANDT TYPE STRING,
MATNR TYPE STRING,
VKORG TYPE STRING,
VTWEG TYPE STRING,
LVORM TYPE STRING,
VERSG TYPE STRING,
BONUS TYPE STRING,
PROVG TYPE STRING,
SKTOF TYPE STRING,
VMSTA TYPE STRING,
VMSTD TYPE STRING,
AUMNG TYPE STRING,
LFMNG TYPE STRING,
EFMNG TYPE STRING,
SCMNG TYPE STRING,
SCHME TYPE STRING,
VRKME TYPE STRING,
MTPOS TYPE STRING,
DWERK TYPE STRING,
PRODH TYPE STRING,
PMATN TYPE STRING,
KONDM TYPE STRING,
KTGRM TYPE STRING,
MVGR1 TYPE STRING,
MVGR2 TYPE STRING,
MVGR3 TYPE STRING,
MVGR4 TYPE STRING,
MVGR5 TYPE STRING,
IS_ENTLMNT_RLVT TYPE STRING,
SSTUF TYPE STRING,
PFLKS TYPE STRING,
LSTFL TYPE STRING,
LSTVZ TYPE STRING,
LSTAK TYPE STRING,
LDVFL TYPE STRING,
LDBFL TYPE STRING,
LDVZL TYPE STRING,
LDBZL TYPE STRING,
VDVFL TYPE STRING,
VDBFL TYPE STRING,
VDVZL TYPE STRING,
VDBZL TYPE STRING,
PRAT1 TYPE STRING,
PRAT2 TYPE STRING,
PRAT3 TYPE STRING,
PRAT4 TYPE STRING,
PRAT5 TYPE STRING,
PRAT6 TYPE STRING,
PRAT7 TYPE STRING,
PRAT8 TYPE STRING,
PRAT9 TYPE STRING,
PRATA TYPE STRING,
RDPRF TYPE STRING,
MEGRU TYPE STRING,
LFMAX TYPE STRING,
RJART TYPE STRING,
PBIND TYPE STRING,
VAVME TYPE STRING,
MATKC TYPE STRING,
PVMSO TYPE STRING,
DUMMY_SALD_INCL_EEW_PS TYPE STRING,
/BEV1/EMLGRP TYPE STRING,
/BEV1/EMDRCKSPL TYPE STRING,
/BEV1/RPBEZME TYPE STRING,
/BEV1/RPSNS TYPE STRING,
/BEV1/RPSFA TYPE STRING,
/BEV1/RPSKI TYPE STRING,
/BEV1/RPSCO TYPE STRING,
/BEV1/RPSSO TYPE STRING,
NF_FLAG TYPE STRING,
CTR_TERM_DEF TYPE STRING,
CTR_TERM_ALT1 TYPE STRING,
CTR_TERM_ALT2 TYPE STRING,
CTR_TERM_UNIT TYPE STRING,
EXT_PERIOD_DEF TYPE STRING,
EXT_PERIOD_ALT1 TYPE STRING,
EXT_PERIOD_ALT2 TYPE STRING,
EXT_PERIOD_UNIT TYPE STRING,
PACKAGE_TYPE TYPE STRING,
PACKAGE_SIZE TYPE STRING,
PLGTP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MVKE_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_MVKE_STR-MANDT sy-vline 
WA_MVKE_STR-MATNR sy-vline 
WA_MVKE_STR-VKORG sy-vline 
WA_MVKE_STR-VTWEG sy-vline 
WA_MVKE_STR-LVORM sy-vline 
WA_MVKE_STR-VERSG sy-vline 
WA_MVKE_STR-BONUS sy-vline 
WA_MVKE_STR-PROVG sy-vline 
WA_MVKE_STR-SKTOF sy-vline 
WA_MVKE_STR-VMSTA sy-vline 
WA_MVKE_STR-VMSTD sy-vline 
WA_MVKE_STR-AUMNG sy-vline 
WA_MVKE_STR-LFMNG sy-vline 
WA_MVKE_STR-EFMNG sy-vline 
WA_MVKE_STR-SCMNG sy-vline 
WA_MVKE_STR-SCHME sy-vline 
WA_MVKE_STR-VRKME sy-vline 
WA_MVKE_STR-MTPOS sy-vline 
WA_MVKE_STR-DWERK sy-vline 
WA_MVKE_STR-PRODH sy-vline 
WA_MVKE_STR-PMATN sy-vline 
WA_MVKE_STR-KONDM sy-vline 
WA_MVKE_STR-KTGRM sy-vline 
WA_MVKE_STR-MVGR1 sy-vline 
WA_MVKE_STR-MVGR2 sy-vline 
WA_MVKE_STR-MVGR3 sy-vline 
WA_MVKE_STR-MVGR4 sy-vline 
WA_MVKE_STR-MVGR5 sy-vline 
WA_MVKE_STR-IS_ENTLMNT_RLVT sy-vline 
WA_MVKE_STR-SSTUF sy-vline 
WA_MVKE_STR-PFLKS sy-vline 
WA_MVKE_STR-LSTFL sy-vline 
WA_MVKE_STR-LSTVZ sy-vline 
WA_MVKE_STR-LSTAK sy-vline 
WA_MVKE_STR-LDVFL sy-vline 
WA_MVKE_STR-LDBFL sy-vline 
WA_MVKE_STR-LDVZL sy-vline 
WA_MVKE_STR-LDBZL sy-vline 
WA_MVKE_STR-VDVFL sy-vline 
WA_MVKE_STR-VDBFL sy-vline 
WA_MVKE_STR-VDVZL sy-vline 
WA_MVKE_STR-VDBZL sy-vline 
WA_MVKE_STR-PRAT1 sy-vline 
WA_MVKE_STR-PRAT2 sy-vline 
WA_MVKE_STR-PRAT3 sy-vline 
WA_MVKE_STR-PRAT4 sy-vline 
WA_MVKE_STR-PRAT5 sy-vline 
WA_MVKE_STR-PRAT6 sy-vline 
WA_MVKE_STR-PRAT7 sy-vline 
WA_MVKE_STR-PRAT8 sy-vline 
WA_MVKE_STR-PRAT9 sy-vline 
WA_MVKE_STR-PRATA sy-vline 
WA_MVKE_STR-RDPRF sy-vline 
WA_MVKE_STR-MEGRU sy-vline 
WA_MVKE_STR-LFMAX sy-vline 
WA_MVKE_STR-RJART sy-vline 
WA_MVKE_STR-PBIND sy-vline 
WA_MVKE_STR-VAVME sy-vline 
WA_MVKE_STR-MATKC sy-vline 
WA_MVKE_STR-PVMSO sy-vline 
WA_MVKE_STR-DUMMY_SALD_INCL_EEW_PS sy-vline 
WA_MVKE_STR-/BEV1/EMLGRP sy-vline 
WA_MVKE_STR-/BEV1/EMDRCKSPL sy-vline 
WA_MVKE_STR-/BEV1/RPBEZME sy-vline 
WA_MVKE_STR-/BEV1/RPSNS sy-vline 
WA_MVKE_STR-/BEV1/RPSFA sy-vline 
WA_MVKE_STR-/BEV1/RPSKI sy-vline 
WA_MVKE_STR-/BEV1/RPSCO sy-vline 
WA_MVKE_STR-/BEV1/RPSSO sy-vline 
WA_MVKE_STR-NF_FLAG sy-vline 
WA_MVKE_STR-CTR_TERM_DEF sy-vline 
WA_MVKE_STR-CTR_TERM_ALT1 sy-vline 
WA_MVKE_STR-CTR_TERM_ALT2 sy-vline 
WA_MVKE_STR-CTR_TERM_UNIT sy-vline 
WA_MVKE_STR-EXT_PERIOD_DEF sy-vline 
WA_MVKE_STR-EXT_PERIOD_ALT1 sy-vline 
WA_MVKE_STR-EXT_PERIOD_ALT2 sy-vline 
WA_MVKE_STR-EXT_PERIOD_UNIT sy-vline 
WA_MVKE_STR-PACKAGE_TYPE sy-vline 
WA_MVKE_STR-PACKAGE_SIZE sy-vline 
WA_MVKE_STR-PLGTP sy-vline      INTO ld_text SEPARATED BY SPACE.

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