ABAP Select data from SAP table MPBA into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MPBA
*  INTO TABLE @DATA(IT_MPBA2).
*--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_MPBA INDEX 1 INTO DATA(WA_MPBA2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MPBA>-BSART = 1.
<MPBA>-BANFN = 1.
<MPBA>-BNFPO = 1.
<MPBA>-PSTYP = 1.
<MPBA>-RESWK = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MPBA-MENGE, sy-vline,
  WA_MPBA-LFDAT, sy-vline,
  WA_MPBA-FRGDT, sy-vline,
  WA_MPBA-WEBAZ, sy-vline,
  WA_MPBA-LGORT, sy-vline,
  WA_MPBA-KNTTP, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MPBA 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_MPBA 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_MPBA INTO WA_MPBA.


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

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

*Conversion exit ABPSP, internal->external for field PSPEL
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_MPBA-PSPEL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MPBA-PSPEL.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

*Conversion exit NUMCV, internal->external for field REVLV
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_MPBA-REVLV
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MPBA-REVLV.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit ALPHA, internal->external for field SRM_CONTRACT_ID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MPBA-SRM_CONTRACT_ID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MPBA-SRM_CONTRACT_ID.
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_MPBA_STR, 
BSART TYPE STRING,
BANFN TYPE STRING,
BNFPO TYPE STRING,
PSTYP TYPE STRING,
RESWK TYPE STRING,
MENGE TYPE STRING,
LFDAT TYPE STRING,
FRGDT TYPE STRING,
WEBAZ TYPE STRING,
LGORT TYPE STRING,
KNTTP TYPE STRING,
SOBKZ TYPE STRING,
KZVBR TYPE STRING,
KZBWS TYPE STRING,
VBELN TYPE STRING,
VBELP TYPE STRING,
PSPEL TYPE STRING,
EKORG TYPE STRING,
FLIEF TYPE STRING,
LIFNR TYPE STRING,
EBELN TYPE STRING,
EBELP TYPE STRING,
QUNUM TYPE STRING,
QUPOS TYPE STRING,
FIX01 TYPE STRING,
FIX02 TYPE STRING,
CUOBJ TYPE STRING,
SERNR TYPE STRING,
AKTAL TYPE STRING,
VERID TYPE STRING,
REVLV TYPE STRING,
RSNUM TYPE STRING,
AENNR TYPE STRING,
VRTYP TYPE STRING,
TECHS TYPE STRING,
EMATN TYPE STRING,
PLIFZ TYPE STRING,
SRM_CONTRACT_ID TYPE STRING,
SRM_CONTRACT_ITM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MPBA_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_MPBA_STR-BSART sy-vline 
WA_MPBA_STR-BANFN sy-vline 
WA_MPBA_STR-BNFPO sy-vline 
WA_MPBA_STR-PSTYP sy-vline 
WA_MPBA_STR-RESWK sy-vline 
WA_MPBA_STR-MENGE sy-vline 
WA_MPBA_STR-LFDAT sy-vline 
WA_MPBA_STR-FRGDT sy-vline 
WA_MPBA_STR-WEBAZ sy-vline 
WA_MPBA_STR-LGORT sy-vline 
WA_MPBA_STR-KNTTP sy-vline 
WA_MPBA_STR-SOBKZ sy-vline 
WA_MPBA_STR-KZVBR sy-vline 
WA_MPBA_STR-KZBWS sy-vline 
WA_MPBA_STR-VBELN sy-vline 
WA_MPBA_STR-VBELP sy-vline 
WA_MPBA_STR-PSPEL sy-vline 
WA_MPBA_STR-EKORG sy-vline 
WA_MPBA_STR-FLIEF sy-vline 
WA_MPBA_STR-LIFNR sy-vline 
WA_MPBA_STR-EBELN sy-vline 
WA_MPBA_STR-EBELP sy-vline 
WA_MPBA_STR-QUNUM sy-vline 
WA_MPBA_STR-QUPOS sy-vline 
WA_MPBA_STR-FIX01 sy-vline 
WA_MPBA_STR-FIX02 sy-vline 
WA_MPBA_STR-CUOBJ sy-vline 
WA_MPBA_STR-SERNR sy-vline 
WA_MPBA_STR-AKTAL sy-vline 
WA_MPBA_STR-VERID sy-vline 
WA_MPBA_STR-REVLV sy-vline 
WA_MPBA_STR-RSNUM sy-vline 
WA_MPBA_STR-AENNR sy-vline 
WA_MPBA_STR-VRTYP sy-vline 
WA_MPBA_STR-TECHS sy-vline 
WA_MPBA_STR-EMATN sy-vline 
WA_MPBA_STR-PLIFZ sy-vline 
WA_MPBA_STR-SRM_CONTRACT_ID sy-vline 
WA_MPBA_STR-SRM_CONTRACT_ITM sy-vline      INTO ld_text SEPARATED BY SPACE.

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