ABAP Select data from SAP table MMPUR_FIXED_SOURCE_SUPPLY into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP MMPUR_FIXED_SOURCE_SUPPLY 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_FIXED_SOURCE_SUPPLY. 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_FIXED_SOURCE_SUPPLY 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_FIXED_SOURCE_SUPPLY TYPE STANDARD TABLE OF MMPUR_FIXED_SOURCE_SUPPLY,
      WA_MMPUR_FIXED_SOURCE_SUPPLY TYPE MMPUR_FIXED_SOURCE_SUPPLY,
      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_FIXED_SOURCE_SUPPLY> TYPE MMPUR_FIXED_SOURCE_SUPPLY.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MMPUR_FIXED_SOURCE_SUPPLY
*  INTO TABLE @DATA(IT_MMPUR_FIXED_SOURCE_SUPPLY2).
*--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_FIXED_SOURCE_SUPPLY INDEX 1 INTO DATA(WA_MMPUR_FIXED_SOURCE_SUPPLY2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MMPUR_FIXED_SOURCE_SUPPLY>-CITYNAME = 1.
<MMPUR_FIXED_SOURCE_SUPPLY>-COUNTRY = 1.
<MMPUR_FIXED_SOURCE_SUPPLY>-FIRSTNAME = 1.
<MMPUR_FIXED_SOURCE_SUPPLY>-LASTNAME = 1.
<MMPUR_FIXED_SOURCE_SUPPLY>-ORGANIZATIONBPNAME1 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MMPUR_FIXED_SOURCE_SUPPLY-ORGANIZATIONBPNAME2, sy-vline,
  WA_MMPUR_FIXED_SOURCE_SUPPLY-ORGANIZATIONBPNAME3, sy-vline,
  WA_MMPUR_FIXED_SOURCE_SUPPLY-ORGANIZATIONBPNAME4, sy-vline,
  WA_MMPUR_FIXED_SOURCE_SUPPLY-POSTALCODE, sy-vline,
  WA_MMPUR_FIXED_SOURCE_SUPPLY-PURCHASINGORGANIZATION, sy-vline,
  WA_MMPUR_FIXED_SOURCE_SUPPLY-REGION, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MMPUR_FIXED_SOURCE_SUPPLY 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_FIXED_SOURCE_SUPPLY 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_FIXED_SOURCE_SUPPLY INTO WA_MMPUR_FIXED_SOURCE_SUPPLY.


*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 SUPPLIER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MMPUR_FIXED_SOURCE_SUPPLY-SUPPLIER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MMPUR_FIXED_SOURCE_SUPPLY-SUPPLIER.
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_FIXED_SOURCE_SUPPLY_STR, 
CITYNAME TYPE STRING,
COUNTRY TYPE STRING,
FIRSTNAME TYPE STRING,
LASTNAME TYPE STRING,
ORGANIZATIONBPNAME1 TYPE STRING,
ORGANIZATIONBPNAME2 TYPE STRING,
ORGANIZATIONBPNAME3 TYPE STRING,
ORGANIZATIONBPNAME4 TYPE STRING,
POSTALCODE TYPE STRING,
PURCHASINGORGANIZATION TYPE STRING,
REGION TYPE STRING,
SUPPLIER TYPE STRING,
SUPPLIERNAME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MMPUR_FIXED_SOURCE_SUPPLY_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_FIXED_SOURCE_SUPPLY_STR-CITYNAME sy-vline 
WA_MMPUR_FIXED_SOURCE_SUPPLY_STR-COUNTRY sy-vline 
WA_MMPUR_FIXED_SOURCE_SUPPLY_STR-FIRSTNAME sy-vline 
WA_MMPUR_FIXED_SOURCE_SUPPLY_STR-LASTNAME sy-vline 
WA_MMPUR_FIXED_SOURCE_SUPPLY_STR-ORGANIZATIONBPNAME1 sy-vline 
WA_MMPUR_FIXED_SOURCE_SUPPLY_STR-ORGANIZATIONBPNAME2 sy-vline 
WA_MMPUR_FIXED_SOURCE_SUPPLY_STR-ORGANIZATIONBPNAME3 sy-vline 
WA_MMPUR_FIXED_SOURCE_SUPPLY_STR-ORGANIZATIONBPNAME4 sy-vline 
WA_MMPUR_FIXED_SOURCE_SUPPLY_STR-POSTALCODE sy-vline 
WA_MMPUR_FIXED_SOURCE_SUPPLY_STR-PURCHASINGORGANIZATION sy-vline 
WA_MMPUR_FIXED_SOURCE_SUPPLY_STR-REGION sy-vline 
WA_MMPUR_FIXED_SOURCE_SUPPLY_STR-SUPPLIER sy-vline 
WA_MMPUR_FIXED_SOURCE_SUPPLY_STR-SUPPLIERNAME sy-vline      INTO ld_text SEPARATED BY SPACE.

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