ABAP Select data from SAP table MMPURUI_MATERIAL_STY into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP MMPURUI_MATERIAL_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 MMPURUI_MATERIAL_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 MMPURUI_MATERIAL_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_MMPURUI_MATERIAL_STY TYPE STANDARD TABLE OF MMPURUI_MATERIAL_STY,
      WA_MMPURUI_MATERIAL_STY TYPE MMPURUI_MATERIAL_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: <MMPURUI_MATERIAL_STY> TYPE MMPURUI_MATERIAL_STY.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MMPURUI_MATERIAL_STY
*  INTO TABLE @DATA(IT_MMPURUI_MATERIAL_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_MMPURUI_MATERIAL_STY INDEX 1 INTO DATA(WA_MMPURUI_MATERIAL_STY2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MMPURUI_MATERIAL_STY>-MATNR = 1.
<MMPURUI_MATERIAL_STY>-MAKTX = 1.
<MMPURUI_MATERIAL_STY>-MATKL = 1.
<MMPURUI_MATERIAL_STY>-MTART = 1.
<MMPURUI_MATERIAL_STY>-ATTYP = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MMPURUI_MATERIAL_STY-IDNLF, sy-vline,
  WA_MMPURUI_MATERIAL_STY-ERSDA, sy-vline,
  WA_MMPURUI_MATERIAL_STY-EAN11, sy-vline,
  WA_MMPURUI_MATERIAL_STY-NUMTP, sy-vline,
  WA_MMPURUI_MATERIAL_STY-MFRPN, sy-vline,
  WA_MMPURUI_MATERIAL_STY-WERKS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MMPURUI_MATERIAL_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_MMPURUI_MATERIAL_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_MMPURUI_MATERIAL_STY INTO WA_MMPURUI_MATERIAL_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 MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_MMPURUI_MATERIAL_STY-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MMPURUI_MATERIAL_STY-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit EAN11, internal->external for field EAN11
CALL FUNCTION 'CONVERSION_EXIT_EAN11_OUTPUT'
  EXPORTING
    input =                      WA_MMPURUI_MATERIAL_STY-EAN11
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MMPURUI_MATERIAL_STY-EAN11.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit CUNIT, internal->external for field GHG_SCOPE1_UN
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_MMPURUI_MATERIAL_STY-GHG_SCOPE1_UN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MMPURUI_MATERIAL_STY-GHG_SCOPE1_UN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field GHG_SCOPE2_UN
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_MMPURUI_MATERIAL_STY-GHG_SCOPE2_UN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MMPURUI_MATERIAL_STY-GHG_SCOPE2_UN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field GHG_SCOPE3_UN
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_MMPURUI_MATERIAL_STY-GHG_SCOPE3_UN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MMPURUI_MATERIAL_STY-GHG_SCOPE3_UN.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit CUNIT, internal->external for field DIRECT_WASTE_UN
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_MMPURUI_MATERIAL_STY-DIRECT_WASTE_UN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MMPURUI_MATERIAL_STY-DIRECT_WASTE_UN.
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_MMPURUI_MATERIAL_STY_STR, 
MATNR TYPE STRING,
MAKTX TYPE STRING,
MATKL TYPE STRING,
MTART TYPE STRING,
ATTYP TYPE STRING,
IDNLF TYPE STRING,
ERSDA TYPE STRING,
EAN11 TYPE STRING,
NUMTP TYPE STRING,
MFRPN TYPE STRING,
WERKS TYPE STRING,
EKGRP TYPE STRING,
LGORT TYPE STRING,
BEGRU TYPE STRING,
UUID TYPE STRING,
LIFNR TYPE STRING,
EKORG TYPE STRING,
VALIDITY_START TYPE STRING,
VALIDITY_END TYPE STRING,
WERKS_NAME TYPE STRING,
OVERALL_RATING TYPE STRING,
RECYCLED_CONTENT TYPE STRING,
GHG_SCOPE1 TYPE STRING,
GHG_SCOPE1_UN TYPE STRING,
GHG_SCOPE2 TYPE STRING,
GHG_SCOPE2_UN TYPE STRING,
GHG_SCOPE3 TYPE STRING,
GHG_SCOPE3_UN TYPE STRING,
DIRECT_ENERGY TYPE STRING,
DIRECT_ENG_UNIT TYPE STRING,
DIRECT_WATER TYPE STRING,
DIRECT_WATER_UN TYPE STRING,
DIRECT_WASTE TYPE STRING,
DIRECT_WASTE_UN TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MMPURUI_MATERIAL_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_MMPURUI_MATERIAL_STY_STR-MATNR sy-vline 
WA_MMPURUI_MATERIAL_STY_STR-MAKTX sy-vline 
WA_MMPURUI_MATERIAL_STY_STR-MATKL sy-vline 
WA_MMPURUI_MATERIAL_STY_STR-MTART sy-vline 
WA_MMPURUI_MATERIAL_STY_STR-ATTYP sy-vline 
WA_MMPURUI_MATERIAL_STY_STR-IDNLF sy-vline 
WA_MMPURUI_MATERIAL_STY_STR-ERSDA sy-vline 
WA_MMPURUI_MATERIAL_STY_STR-EAN11 sy-vline 
WA_MMPURUI_MATERIAL_STY_STR-NUMTP sy-vline 
WA_MMPURUI_MATERIAL_STY_STR-MFRPN sy-vline 
WA_MMPURUI_MATERIAL_STY_STR-WERKS sy-vline 
WA_MMPURUI_MATERIAL_STY_STR-EKGRP sy-vline 
WA_MMPURUI_MATERIAL_STY_STR-LGORT sy-vline 
WA_MMPURUI_MATERIAL_STY_STR-BEGRU sy-vline 
WA_MMPURUI_MATERIAL_STY_STR-UUID sy-vline 
WA_MMPURUI_MATERIAL_STY_STR-LIFNR sy-vline 
WA_MMPURUI_MATERIAL_STY_STR-EKORG sy-vline 
WA_MMPURUI_MATERIAL_STY_STR-VALIDITY_START sy-vline 
WA_MMPURUI_MATERIAL_STY_STR-VALIDITY_END sy-vline 
WA_MMPURUI_MATERIAL_STY_STR-WERKS_NAME sy-vline 
WA_MMPURUI_MATERIAL_STY_STR-OVERALL_RATING sy-vline 
WA_MMPURUI_MATERIAL_STY_STR-RECYCLED_CONTENT sy-vline 
WA_MMPURUI_MATERIAL_STY_STR-GHG_SCOPE1 sy-vline 
WA_MMPURUI_MATERIAL_STY_STR-GHG_SCOPE1_UN sy-vline 
WA_MMPURUI_MATERIAL_STY_STR-GHG_SCOPE2 sy-vline 
WA_MMPURUI_MATERIAL_STY_STR-GHG_SCOPE2_UN sy-vline 
WA_MMPURUI_MATERIAL_STY_STR-GHG_SCOPE3 sy-vline 
WA_MMPURUI_MATERIAL_STY_STR-GHG_SCOPE3_UN sy-vline 
WA_MMPURUI_MATERIAL_STY_STR-DIRECT_ENERGY sy-vline 
WA_MMPURUI_MATERIAL_STY_STR-DIRECT_ENG_UNIT sy-vline 
WA_MMPURUI_MATERIAL_STY_STR-DIRECT_WATER sy-vline 
WA_MMPURUI_MATERIAL_STY_STR-DIRECT_WATER_UN sy-vline 
WA_MMPURUI_MATERIAL_STY_STR-DIRECT_WASTE sy-vline 
WA_MMPURUI_MATERIAL_STY_STR-DIRECT_WASTE_UN sy-vline      INTO ld_text SEPARATED BY SPACE.

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