ABAP Select data from SAP table MMPREK_PRO_03 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP MMPREK_PRO_03 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 MMPREK_PRO_03. 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 MMPREK_PRO_03 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_MMPREK_PRO_03 TYPE STANDARD TABLE OF MMPREK_PRO_03,
      WA_MMPREK_PRO_03 TYPE MMPREK_PRO_03,
      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: <MMPREK_PRO_03> TYPE MMPREK_PRO_03.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_MMPREK_PRO_03.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM MMPREK_PRO_03
  INTO TABLE IT_MMPREK_PRO_03.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MMPREK_PRO_03
*  INTO TABLE @DATA(IT_MMPREK_PRO_032).
*--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_MMPREK_PRO_03 INDEX 1 INTO DATA(WA_MMPREK_PRO_032).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_MMPREK_PRO_03 ASSIGNING <MMPREK_PRO_03>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MMPREK_PRO_03>-MANDT = 1.
<MMPREK_PRO_03>-TZONE = 1.
<MMPREK_PRO_03>-TSTMP = 1.
<MMPREK_PRO_03>-VBELN = 1.
<MMPREK_PRO_03>-POSNR = 1.

ENDLOOP.

LOOP AT IT_MMPREK_PRO_03 INTO WA_MMPREK_PRO_03.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MMPREK_PRO_03-CUOBJ, sy-vline,
  WA_MMPREK_PRO_03-MATNR, sy-vline,
  WA_MMPREK_PRO_03-WERKS, sy-vline,
  WA_MMPREK_PRO_03-GZOLX, sy-vline,
  WA_MMPREK_PRO_03-IDNRK, sy-vline,
  WA_MMPREK_PRO_03-OJTXP, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MMPREK_PRO_03 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_MMPREK_PRO_03 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_MMPREK_PRO_03 INTO WA_MMPREK_PRO_03.


*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 VBELN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MMPREK_PRO_03-VBELN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MMPREK_PRO_03-VBELN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_MMPREK_PRO_03-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MMPREK_PRO_03-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field IDNRK
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_MMPREK_PRO_03-IDNRK
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MMPREK_PRO_03-IDNRK.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field LTXSP
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_MMPREK_PRO_03-LTXSP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MMPREK_PRO_03-LTXSP.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_MMPREK_PRO_03-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MMPREK_PRO_03-MEINS.
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_MMPREK_PRO_03_STR, 
MANDT TYPE STRING,
TZONE TYPE STRING,
TSTMP TYPE STRING,
VBELN TYPE STRING,
POSNR TYPE STRING,
CUOBJ TYPE STRING,
MATNR TYPE STRING,
WERKS TYPE STRING,
GZOLX TYPE STRING,
IDNRK TYPE STRING,
OJTXP TYPE STRING,
LTXSP TYPE STRING,
MNGLG TYPE STRING,
MEINS TYPE STRING,
MATWER TYPE STRING,
PREFE TYPE STRING,
PRENE TYPE STRING,
STAWN TYPE STRING,
NUEKZ TYPE STRING,
VS_PROZEN TYPE STRING,
PREFKP TYPE STRING,
VS_MATWERT TYPE STRING,
WAERS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MMPREK_PRO_03_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_MMPREK_PRO_03_STR-MANDT sy-vline 
WA_MMPREK_PRO_03_STR-TZONE sy-vline 
WA_MMPREK_PRO_03_STR-TSTMP sy-vline 
WA_MMPREK_PRO_03_STR-VBELN sy-vline 
WA_MMPREK_PRO_03_STR-POSNR sy-vline 
WA_MMPREK_PRO_03_STR-CUOBJ sy-vline 
WA_MMPREK_PRO_03_STR-MATNR sy-vline 
WA_MMPREK_PRO_03_STR-WERKS sy-vline 
WA_MMPREK_PRO_03_STR-GZOLX sy-vline 
WA_MMPREK_PRO_03_STR-IDNRK sy-vline 
WA_MMPREK_PRO_03_STR-OJTXP sy-vline 
WA_MMPREK_PRO_03_STR-LTXSP sy-vline 
WA_MMPREK_PRO_03_STR-MNGLG sy-vline 
WA_MMPREK_PRO_03_STR-MEINS sy-vline 
WA_MMPREK_PRO_03_STR-MATWER sy-vline 
WA_MMPREK_PRO_03_STR-PREFE sy-vline 
WA_MMPREK_PRO_03_STR-PRENE sy-vline 
WA_MMPREK_PRO_03_STR-STAWN sy-vline 
WA_MMPREK_PRO_03_STR-NUEKZ sy-vline 
WA_MMPREK_PRO_03_STR-VS_PROZEN sy-vline 
WA_MMPREK_PRO_03_STR-PREFKP sy-vline 
WA_MMPREK_PRO_03_STR-VS_MATWERT sy-vline 
WA_MMPREK_PRO_03_STR-WAERS sy-vline      INTO ld_text SEPARATED BY SPACE.

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