ABAP Select data from SAP table MAPVM 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 MAPVM 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 MAPVM. 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 MAPVM 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_MAPVM TYPE STANDARD TABLE OF MAPVM,
      WA_MAPVM TYPE MAPVM,
      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: <MAPVM> TYPE MAPVM.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MAPVM
*  INTO TABLE @DATA(IT_MAPVM2).
*--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_MAPVM INDEX 1 INTO DATA(WA_MAPVM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MAPVM>-MATNR = 1.
<MAPVM>-DISMM = 1.
<MAPVM>-ATPKZ = 1.
<MAPVM>-LADGR = 1.
<MAPVM>-TAXM1 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MAPVM-TAXM2, sy-vline,
  WA_MAPVM-TAXM3, sy-vline,
  WA_MAPVM-TAXM4, sy-vline,
  WA_MAPVM-TAXM5, sy-vline,
  WA_MAPVM-TAXM6, sy-vline,
  WA_MAPVM-TAXM7, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MAPVM 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_MAPVM 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_MAPVM INTO WA_MAPVM.


*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_MAPVM-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MAPVM-MATNR.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

*Conversion exit MATN1, internal->external for field SATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_MAPVM-SATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MAPVM-SATNR.
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_MAPVM_STR, 
MATNR TYPE STRING,
DISMM TYPE STRING,
ATPKZ TYPE STRING,
LADGR TYPE STRING,
TAXM1 TYPE STRING,
TAXM2 TYPE STRING,
TAXM3 TYPE STRING,
TAXM4 TYPE STRING,
TAXM5 TYPE STRING,
TAXM6 TYPE STRING,
TAXM7 TYPE STRING,
TAXM8 TYPE STRING,
TAXM9 TYPE STRING,
XCHPF TYPE STRING,
XCHAR TYPE STRING,
VBEAZ TYPE STRING,
VRVEZ TYPE STRING,
VBAMG TYPE STRING,
LGPBE TYPE STRING,
BWTTY TYPE STRING,
APOKZ TYPE STRING,
MTVFP TYPE STRING,
BESKZ TYPE STRING,
EISBE TYPE STRING,
PLIFZ TYPE STRING,
WEBAZ TYPE STRING,
WZEIT TYPE STRING,
DZEIT TYPE STRING,
BEARZ TYPE STRING,
RUEZT TYPE STRING,
TRANZ TYPE STRING,
MINBE TYPE STRING,
STAWN TYPE STRING,
HERKL TYPE STRING,
HERKR TYPE STRING,
MTVER TYPE STRING,
PRCTR TYPE STRING,
TRAGR TYPE STRING,
MISKZ TYPE STRING,
VRMOD TYPE STRING,
VINT1 TYPE STRING,
VINT2 TYPE STRING,
SOBSL TYPE STRING,
PRGRP TYPE STRING,
PRWRK TYPE STRING,
UMREF TYPE STRING,
PRBME TYPE STRING,
DISGR TYPE STRING,
STRGR TYPE STRING,
DISKZ TYPE STRING,
SBDKZ TYPE STRING,
SERNP TYPE STRING,
STDPD TYPE STRING,
CUOBJ TYPE STRING,
VHART TYPE STRING,
FUELG TYPE STRING,
STFAK TYPE STRING,
MAGRV TYPE STRING,
KZUMW TYPE STRING,
QMATV TYPE STRING,
MFRGR TYPE STRING,
KZWSM TYPE STRING,
BASMG TYPE STRING,
SERLV TYPE STRING,
EPRIO TYPE STRING,
KZEFF TYPE STRING,
DIBER TYPE STRING,
SGT_REL TYPE STRING,
SGT_COVS TYPE STRING,
SGT_STATC TYPE STRING,
SGT_SCOPE TYPE STRING,
SGT_STK_PRT TYPE STRING,
SGT_MRPSI TYPE STRING,
PPSKZ TYPE STRING,
FSH_MG_ARUN_REQ TYPE STRING,
FSH_SEAIM TYPE STRING,
FPRFM TYPE STRING,
ARUN_FIX_BATCH TYPE STRING,
SATNR TYPE STRING,
FSH_CALENDAR_GROUP TYPE STRING,
UCHKZ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MAPVM_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_MAPVM_STR-MATNR sy-vline 
WA_MAPVM_STR-DISMM sy-vline 
WA_MAPVM_STR-ATPKZ sy-vline 
WA_MAPVM_STR-LADGR sy-vline 
WA_MAPVM_STR-TAXM1 sy-vline 
WA_MAPVM_STR-TAXM2 sy-vline 
WA_MAPVM_STR-TAXM3 sy-vline 
WA_MAPVM_STR-TAXM4 sy-vline 
WA_MAPVM_STR-TAXM5 sy-vline 
WA_MAPVM_STR-TAXM6 sy-vline 
WA_MAPVM_STR-TAXM7 sy-vline 
WA_MAPVM_STR-TAXM8 sy-vline 
WA_MAPVM_STR-TAXM9 sy-vline 
WA_MAPVM_STR-XCHPF sy-vline 
WA_MAPVM_STR-XCHAR sy-vline 
WA_MAPVM_STR-VBEAZ sy-vline 
WA_MAPVM_STR-VRVEZ sy-vline 
WA_MAPVM_STR-VBAMG sy-vline 
WA_MAPVM_STR-LGPBE sy-vline 
WA_MAPVM_STR-BWTTY sy-vline 
WA_MAPVM_STR-APOKZ sy-vline 
WA_MAPVM_STR-MTVFP sy-vline 
WA_MAPVM_STR-BESKZ sy-vline 
WA_MAPVM_STR-EISBE sy-vline 
WA_MAPVM_STR-PLIFZ sy-vline 
WA_MAPVM_STR-WEBAZ sy-vline 
WA_MAPVM_STR-WZEIT sy-vline 
WA_MAPVM_STR-DZEIT sy-vline 
WA_MAPVM_STR-BEARZ sy-vline 
WA_MAPVM_STR-RUEZT sy-vline 
WA_MAPVM_STR-TRANZ sy-vline 
WA_MAPVM_STR-MINBE sy-vline 
WA_MAPVM_STR-STAWN sy-vline 
WA_MAPVM_STR-HERKL sy-vline 
WA_MAPVM_STR-HERKR sy-vline 
WA_MAPVM_STR-MTVER sy-vline 
WA_MAPVM_STR-PRCTR sy-vline 
WA_MAPVM_STR-TRAGR sy-vline 
WA_MAPVM_STR-MISKZ sy-vline 
WA_MAPVM_STR-VRMOD sy-vline 
WA_MAPVM_STR-VINT1 sy-vline 
WA_MAPVM_STR-VINT2 sy-vline 
WA_MAPVM_STR-SOBSL sy-vline 
WA_MAPVM_STR-PRGRP sy-vline 
WA_MAPVM_STR-PRWRK sy-vline 
WA_MAPVM_STR-UMREF sy-vline 
WA_MAPVM_STR-PRBME sy-vline 
WA_MAPVM_STR-DISGR sy-vline 
WA_MAPVM_STR-STRGR sy-vline 
WA_MAPVM_STR-DISKZ sy-vline 
WA_MAPVM_STR-SBDKZ sy-vline 
WA_MAPVM_STR-SERNP sy-vline 
WA_MAPVM_STR-STDPD sy-vline 
WA_MAPVM_STR-CUOBJ sy-vline 
WA_MAPVM_STR-VHART sy-vline 
WA_MAPVM_STR-FUELG sy-vline 
WA_MAPVM_STR-STFAK sy-vline 
WA_MAPVM_STR-MAGRV sy-vline 
WA_MAPVM_STR-KZUMW sy-vline 
WA_MAPVM_STR-QMATV sy-vline 
WA_MAPVM_STR-MFRGR sy-vline 
WA_MAPVM_STR-KZWSM sy-vline 
WA_MAPVM_STR-BASMG sy-vline 
WA_MAPVM_STR-SERLV sy-vline 
WA_MAPVM_STR-EPRIO sy-vline 
WA_MAPVM_STR-KZEFF sy-vline 
WA_MAPVM_STR-DIBER sy-vline 
WA_MAPVM_STR-SGT_REL sy-vline 
WA_MAPVM_STR-SGT_COVS sy-vline 
WA_MAPVM_STR-SGT_STATC sy-vline 
WA_MAPVM_STR-SGT_SCOPE sy-vline 
WA_MAPVM_STR-SGT_STK_PRT sy-vline 
WA_MAPVM_STR-SGT_MRPSI sy-vline 
WA_MAPVM_STR-PPSKZ sy-vline 
WA_MAPVM_STR-FSH_MG_ARUN_REQ sy-vline 
WA_MAPVM_STR-FSH_SEAIM sy-vline 
WA_MAPVM_STR-FPRFM sy-vline 
WA_MAPVM_STR-ARUN_FIX_BATCH sy-vline 
WA_MAPVM_STR-SATNR sy-vline 
WA_MAPVM_STR-FSH_CALENDAR_GROUP sy-vline 
WA_MAPVM_STR-UCHKZ sy-vline      INTO ld_text SEPARATED BY SPACE.

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