ABAP Select data from SAP table MMPUR_S_PR_ITMACC_CHANGE into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP MMPUR_S_PR_ITMACC_CHANGE 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_S_PR_ITMACC_CHANGE. 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_S_PR_ITMACC_CHANGE 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_S_PR_ITMACC_CHANGE TYPE STANDARD TABLE OF MMPUR_S_PR_ITMACC_CHANGE,
      WA_MMPUR_S_PR_ITMACC_CHANGE TYPE MMPUR_S_PR_ITMACC_CHANGE,
      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_S_PR_ITMACC_CHANGE> TYPE MMPUR_S_PR_ITMACC_CHANGE.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MMPUR_S_PR_ITMACC_CHANGE
*  INTO TABLE @DATA(IT_MMPUR_S_PR_ITMACC_CHANGE2).
*--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_S_PR_ITMACC_CHANGE INDEX 1 INTO DATA(WA_MMPUR_S_PR_ITMACC_CHANGE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MMPUR_S_PR_ITMACC_CHANGE>-ACCOUNTASSIGNMENTNUMBER = 1.
<MMPUR_S_PR_ITMACC_CHANGE>-GLACCOUNT = 1.
<MMPUR_S_PR_ITMACC_CHANGE>-BUSINESSAREA = 1.
<MMPUR_S_PR_ITMACC_CHANGE>-COSTCENTERBYCOCODE = 1.
<MMPUR_S_PR_ITMACC_CHANGE>-ASSETNUMBER = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MMPUR_S_PR_ITMACC_CHANGE-ASSETSUBNUMBER, sy-vline,
  WA_MMPUR_S_PR_ITMACC_CHANGE-ORDER, sy-vline,
  WA_MMPUR_S_PR_ITMACC_CHANGE-GOODSRECIPIENTNAME, sy-vline,
  WA_MMPUR_S_PR_ITMACC_CHANGE-UNLOADINGPOINTNAME, sy-vline,
  WA_MMPUR_S_PR_ITMACC_CHANGE-CONTROLLINGAREA, sy-vline,
  WA_MMPUR_S_PR_ITMACC_CHANGE-COSTOBJECT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MMPUR_S_PR_ITMACC_CHANGE 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_S_PR_ITMACC_CHANGE 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_S_PR_ITMACC_CHANGE INTO WA_MMPUR_S_PR_ITMACC_CHANGE.


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

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

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field PROJECTNETWORK
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MMPUR_S_PR_ITMACC_CHANGE-PROJECTNETWORK
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MMPUR_S_PR_ITMACC_CHANGE-PROJECTNETWORK.
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_S_PR_ITMACC_CHANGE_STR, 
ACCOUNTASSIGNMENTNUMBER TYPE STRING,
GLACCOUNT TYPE STRING,
BUSINESSAREA TYPE STRING,
COSTCENTERBYCOCODE TYPE STRING,
ASSETNUMBER TYPE STRING,
ASSETSUBNUMBER TYPE STRING,
ORDER TYPE STRING,
GOODSRECIPIENTNAME TYPE STRING,
UNLOADINGPOINTNAME TYPE STRING,
CONTROLLINGAREA TYPE STRING,
COSTOBJECT TYPE STRING,
PROFITCENTER TYPE STRING,
WBSELEMENT TYPE STRING,
PROJECTNETWORK TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MMPUR_S_PR_ITMACC_CHANGE_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_S_PR_ITMACC_CHANGE_STR-ACCOUNTASSIGNMENTNUMBER sy-vline 
WA_MMPUR_S_PR_ITMACC_CHANGE_STR-GLACCOUNT sy-vline 
WA_MMPUR_S_PR_ITMACC_CHANGE_STR-BUSINESSAREA sy-vline 
WA_MMPUR_S_PR_ITMACC_CHANGE_STR-COSTCENTERBYCOCODE sy-vline 
WA_MMPUR_S_PR_ITMACC_CHANGE_STR-ASSETNUMBER sy-vline 
WA_MMPUR_S_PR_ITMACC_CHANGE_STR-ASSETSUBNUMBER sy-vline 
WA_MMPUR_S_PR_ITMACC_CHANGE_STR-ORDER sy-vline 
WA_MMPUR_S_PR_ITMACC_CHANGE_STR-GOODSRECIPIENTNAME sy-vline 
WA_MMPUR_S_PR_ITMACC_CHANGE_STR-UNLOADINGPOINTNAME sy-vline 
WA_MMPUR_S_PR_ITMACC_CHANGE_STR-CONTROLLINGAREA sy-vline 
WA_MMPUR_S_PR_ITMACC_CHANGE_STR-COSTOBJECT sy-vline 
WA_MMPUR_S_PR_ITMACC_CHANGE_STR-PROFITCENTER sy-vline 
WA_MMPUR_S_PR_ITMACC_CHANGE_STR-WBSELEMENT sy-vline 
WA_MMPUR_S_PR_ITMACC_CHANGE_STR-PROJECTNETWORK sy-vline      INTO ld_text SEPARATED BY SPACE.

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