ABAP Select data from SAP table /SAPAPO/SHOW_MMHIPO_MAIN into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /SAPAPO/SHOW_MMHIPO_MAIN 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 /SAPAPO/SHOW_MMHIPO_MAIN. 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 /SAPAPO/SHOW_MMHIPO_MAIN 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_/SAPAPO/SHOW_MMHIPO_MAIN TYPE STANDARD TABLE OF /SAPAPO/SHOW_MMHIPO_MAIN,
      WA_/SAPAPO/SHOW_MMHIPO_MAIN TYPE /SAPAPO/SHOW_MMHIPO_MAIN,
      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: </SAPAPO/SHOW_MMHIPO_MAIN> TYPE /SAPAPO/SHOW_MMHIPO_MAIN.

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

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /SAPAPO/SHOW_MMHIPO_MAIN
  INTO TABLE IT_/SAPAPO/SHOW_MMHIPO_MAIN.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SAPAPO/SHOW_MMHIPO_MAIN
*  INTO TABLE @DATA(IT_/SAPAPO/SHOW_MMHIPO_MAIN2).
*--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_/SAPAPO/SHOW_MMHIPO_MAIN INDEX 1 INTO DATA(WA_/SAPAPO/SHOW_MMHIPO_MAIN2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/SAPAPO/SHOW_MMHIPO_MAIN ASSIGNING </SAPAPO/SHOW_MMHIPO_MAIN>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SAPAPO/SHOW_MMHIPO_MAIN>-BEWTL = 1.
</SAPAPO/SHOW_MMHIPO_MAIN>-BEWTK = 1.
</SAPAPO/SHOW_MMHIPO_MAIN>-BWART = 1.
</SAPAPO/SHOW_MMHIPO_MAIN>-BELNR = 1.
</SAPAPO/SHOW_MMHIPO_MAIN>-BUZEI = 1.

ENDLOOP.

LOOP AT IT_/SAPAPO/SHOW_MMHIPO_MAIN INTO WA_/SAPAPO/SHOW_MMHIPO_MAIN.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SAPAPO/SHOW_MMHIPO_MAIN-BUDAT, sy-vline,
  WA_/SAPAPO/SHOW_MMHIPO_MAIN-MENGE, sy-vline,
  WA_/SAPAPO/SHOW_MMHIPO_MAIN-MEINS, sy-vline,
  WA_/SAPAPO/SHOW_MMHIPO_MAIN-VGABE, sy-vline,
  WA_/SAPAPO/SHOW_MMHIPO_MAIN-BPMNG, sy-vline,
  WA_/SAPAPO/SHOW_MMHIPO_MAIN-BPRME, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SAPAPO/SHOW_MMHIPO_MAIN 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_/SAPAPO/SHOW_MMHIPO_MAIN 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_/SAPAPO/SHOW_MMHIPO_MAIN INTO WA_/SAPAPO/SHOW_MMHIPO_MAIN.


*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 BELNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/SAPAPO/SHOW_MMHIPO_MAIN-BELNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPAPO/SHOW_MMHIPO_MAIN-BELNR.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit GJAHR, internal->external for field LFGJA
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_/SAPAPO/SHOW_MMHIPO_MAIN-LFGJA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPAPO/SHOW_MMHIPO_MAIN-LFGJA.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit MATN1, internal->external for field EMATN
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_/SAPAPO/SHOW_MMHIPO_MAIN-EMATN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPAPO/SHOW_MMHIPO_MAIN-EMATN.
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_/SAPAPO/SHOW_MMHIPO_MAIN_STR, 
BEWTL TYPE STRING,
BEWTK TYPE STRING,
BWART TYPE STRING,
BELNR TYPE STRING,
BUZEI TYPE STRING,
BUDAT TYPE STRING,
MENGE TYPE STRING,
MEINS TYPE STRING,
VGABE TYPE STRING,
BPMNG TYPE STRING,
BPRME TYPE STRING,
WRBTR TYPE STRING,
WAERS TYPE STRING,
WESBS TYPE STRING,
BPWES TYPE STRING,
SHKZG TYPE STRING,
BWTAR TYPE STRING,
ELIKZ TYPE STRING,
XBLNR TYPE STRING,
LFGJA TYPE STRING,
LFBNR TYPE STRING,
LFPOS TYPE STRING,
GRUND TYPE STRING,
CPUDT TYPE STRING,
CPUTM TYPE STRING,
MATNR TYPE STRING,
WERKS TYPE STRING,
ETENS TYPE STRING,
KNUMV TYPE STRING,
MWSKZ TYPE STRING,
LSMNG TYPE STRING,
LSMEH TYPE STRING,
EMATN TYPE STRING,
CHARG TYPE STRING,
BLDAT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SAPAPO/SHOW_MMHIPO_MAIN_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_/SAPAPO/SHOW_MMHIPO_MAIN_STR-BEWTL sy-vline 
WA_/SAPAPO/SHOW_MMHIPO_MAIN_STR-BEWTK sy-vline 
WA_/SAPAPO/SHOW_MMHIPO_MAIN_STR-BWART sy-vline 
WA_/SAPAPO/SHOW_MMHIPO_MAIN_STR-BELNR sy-vline 
WA_/SAPAPO/SHOW_MMHIPO_MAIN_STR-BUZEI sy-vline 
WA_/SAPAPO/SHOW_MMHIPO_MAIN_STR-BUDAT sy-vline 
WA_/SAPAPO/SHOW_MMHIPO_MAIN_STR-MENGE sy-vline 
WA_/SAPAPO/SHOW_MMHIPO_MAIN_STR-MEINS sy-vline 
WA_/SAPAPO/SHOW_MMHIPO_MAIN_STR-VGABE sy-vline 
WA_/SAPAPO/SHOW_MMHIPO_MAIN_STR-BPMNG sy-vline 
WA_/SAPAPO/SHOW_MMHIPO_MAIN_STR-BPRME sy-vline 
WA_/SAPAPO/SHOW_MMHIPO_MAIN_STR-WRBTR sy-vline 
WA_/SAPAPO/SHOW_MMHIPO_MAIN_STR-WAERS sy-vline 
WA_/SAPAPO/SHOW_MMHIPO_MAIN_STR-WESBS sy-vline 
WA_/SAPAPO/SHOW_MMHIPO_MAIN_STR-BPWES sy-vline 
WA_/SAPAPO/SHOW_MMHIPO_MAIN_STR-SHKZG sy-vline 
WA_/SAPAPO/SHOW_MMHIPO_MAIN_STR-BWTAR sy-vline 
WA_/SAPAPO/SHOW_MMHIPO_MAIN_STR-ELIKZ sy-vline 
WA_/SAPAPO/SHOW_MMHIPO_MAIN_STR-XBLNR sy-vline 
WA_/SAPAPO/SHOW_MMHIPO_MAIN_STR-LFGJA sy-vline 
WA_/SAPAPO/SHOW_MMHIPO_MAIN_STR-LFBNR sy-vline 
WA_/SAPAPO/SHOW_MMHIPO_MAIN_STR-LFPOS sy-vline 
WA_/SAPAPO/SHOW_MMHIPO_MAIN_STR-GRUND sy-vline 
WA_/SAPAPO/SHOW_MMHIPO_MAIN_STR-CPUDT sy-vline 
WA_/SAPAPO/SHOW_MMHIPO_MAIN_STR-CPUTM sy-vline 
WA_/SAPAPO/SHOW_MMHIPO_MAIN_STR-MATNR sy-vline 
WA_/SAPAPO/SHOW_MMHIPO_MAIN_STR-WERKS sy-vline 
WA_/SAPAPO/SHOW_MMHIPO_MAIN_STR-ETENS sy-vline 
WA_/SAPAPO/SHOW_MMHIPO_MAIN_STR-KNUMV sy-vline 
WA_/SAPAPO/SHOW_MMHIPO_MAIN_STR-MWSKZ sy-vline 
WA_/SAPAPO/SHOW_MMHIPO_MAIN_STR-LSMNG sy-vline 
WA_/SAPAPO/SHOW_MMHIPO_MAIN_STR-LSMEH sy-vline 
WA_/SAPAPO/SHOW_MMHIPO_MAIN_STR-EMATN sy-vline 
WA_/SAPAPO/SHOW_MMHIPO_MAIN_STR-CHARG sy-vline 
WA_/SAPAPO/SHOW_MMHIPO_MAIN_STR-BLDAT sy-vline      INTO ld_text SEPARATED BY SPACE.

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