ABAP Select data from SAP table MMPUR_SPPR_REL_STRAT_STY into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MMPUR_SPPR_REL_STRAT_STY
*  INTO TABLE @DATA(IT_MMPUR_SPPR_REL_STRAT_STY2).
*--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_MMPUR_SPPR_REL_STRAT_STY INDEX 1 INTO DATA(WA_MMPUR_SPPR_REL_STRAT_STY2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MMPUR_SPPR_REL_STRAT_STY>-DOC_NUMBER = 1.
<MMPUR_SPPR_REL_STRAT_STY>-DOC_ITEM = 1.
<MMPUR_SPPR_REL_STRAT_STY>-DOC_NR = 1.
<MMPUR_SPPR_REL_STRAT_STY>-ITEM_NR = 1.
<MMPUR_SPPR_REL_STRAT_STY>-FRGGR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MMPUR_SPPR_REL_STRAT_STY-FRGGT, sy-vline,
  WA_MMPUR_SPPR_REL_STRAT_STY-FRGSX, sy-vline,
  WA_MMPUR_SPPR_REL_STRAT_STY-FRGXT, sy-vline,
  WA_MMPUR_SPPR_REL_STRAT_STY-FRGCO, sy-vline,
  WA_MMPUR_SPPR_REL_STRAT_STY-FRGCT, sy-vline,
  WA_MMPUR_SPPR_REL_STRAT_STY-FRGKX, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MMPUR_SPPR_REL_STRAT_STY 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_MMPUR_SPPR_REL_STRAT_STY 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_MMPUR_SPPR_REL_STRAT_STY INTO WA_MMPUR_SPPR_REL_STRAT_STY.


*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 DOC_NUMBER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MMPUR_SPPR_REL_STRAT_STY-DOC_NUMBER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MMPUR_SPPR_REL_STRAT_STY-DOC_NUMBER.
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_MMPUR_SPPR_REL_STRAT_STY_STR, 
DOC_NUMBER TYPE STRING,
DOC_ITEM TYPE STRING,
DOC_NR TYPE STRING,
ITEM_NR TYPE STRING,
FRGGR TYPE STRING,
FRGGT TYPE STRING,
FRGSX TYPE STRING,
FRGXT TYPE STRING,
FRGCO TYPE STRING,
FRGCT TYPE STRING,
FRGKX TYPE STRING,
FRGET TYPE STRING,
INFO TYPE STRING,
ICON_SIM TYPE STRING,
ICON_FINAL TYPE STRING,
ICON_REJECT TYPE STRING,
FRGEX TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MMPUR_SPPR_REL_STRAT_STY_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_MMPUR_SPPR_REL_STRAT_STY_STR-DOC_NUMBER sy-vline 
WA_MMPUR_SPPR_REL_STRAT_STY_STR-DOC_ITEM sy-vline 
WA_MMPUR_SPPR_REL_STRAT_STY_STR-DOC_NR sy-vline 
WA_MMPUR_SPPR_REL_STRAT_STY_STR-ITEM_NR sy-vline 
WA_MMPUR_SPPR_REL_STRAT_STY_STR-FRGGR sy-vline 
WA_MMPUR_SPPR_REL_STRAT_STY_STR-FRGGT sy-vline 
WA_MMPUR_SPPR_REL_STRAT_STY_STR-FRGSX sy-vline 
WA_MMPUR_SPPR_REL_STRAT_STY_STR-FRGXT sy-vline 
WA_MMPUR_SPPR_REL_STRAT_STY_STR-FRGCO sy-vline 
WA_MMPUR_SPPR_REL_STRAT_STY_STR-FRGCT sy-vline 
WA_MMPUR_SPPR_REL_STRAT_STY_STR-FRGKX sy-vline 
WA_MMPUR_SPPR_REL_STRAT_STY_STR-FRGET sy-vline 
WA_MMPUR_SPPR_REL_STRAT_STY_STR-INFO sy-vline 
WA_MMPUR_SPPR_REL_STRAT_STY_STR-ICON_SIM sy-vline 
WA_MMPUR_SPPR_REL_STRAT_STY_STR-ICON_FINAL sy-vline 
WA_MMPUR_SPPR_REL_STRAT_STY_STR-ICON_REJECT sy-vline 
WA_MMPUR_SPPR_REL_STRAT_STY_STR-FRGEX sy-vline      INTO ld_text SEPARATED BY SPACE.

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