ABAP Select data from SAP table MPES_EXEC_PLMZ_RESB into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MPES_EXEC_PLMZ_RESB
*  INTO TABLE @DATA(IT_MPES_EXEC_PLMZ_RESB2).
*--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_MPES_EXEC_PLMZ_RESB INDEX 1 INTO DATA(WA_MPES_EXEC_PLMZ_RESB2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MPES_EXEC_PLMZ_RESB>-PLNTY = 1.
<MPES_EXEC_PLMZ_RESB>-PLNNR = 1.
<MPES_EXEC_PLMZ_RESB>-ZUONR = 1.
<MPES_EXEC_PLMZ_RESB>-ZAEHL = 1.
<MPES_EXEC_PLMZ_RESB>-RSNUM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MPES_EXEC_PLMZ_RESB-RSPOS, sy-vline,
  WA_MPES_EXEC_PLMZ_RESB-RSART, sy-vline,
  WA_MPES_EXEC_PLMZ_RESB-PLNFL, sy-vline,
  WA_MPES_EXEC_PLMZ_RESB-APLZL, sy-vline,
  WA_MPES_EXEC_PLMZ_RESB-VORNR, sy-vline,
  WA_MPES_EXEC_PLMZ_RESB-KZAUS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MPES_EXEC_PLMZ_RESB 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_MPES_EXEC_PLMZ_RESB 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_MPES_EXEC_PLMZ_RESB INTO WA_MPES_EXEC_PLMZ_RESB.


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

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

*Conversion exit NUMCV, internal->external for field VORNR
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_MPES_EXEC_PLMZ_RESB-VORNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MPES_EXEC_PLMZ_RESB-VORNR.
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_MPES_EXEC_PLMZ_RESB_STR, 
PLNTY TYPE STRING,
PLNNR TYPE STRING,
ZUONR TYPE STRING,
ZAEHL TYPE STRING,
RSNUM TYPE STRING,
RSPOS TYPE STRING,
RSART TYPE STRING,
PLNFL TYPE STRING,
APLZL TYPE STRING,
VORNR TYPE STRING,
KZAUS TYPE STRING,
ALPGR TYPE STRING,
NFEAG TYPE STRING,
AUFST TYPE STRING,
AUFWG TYPE STRING,
BAUST TYPE STRING,
BAUWG TYPE STRING,
INDEX_RESBB TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MPES_EXEC_PLMZ_RESB_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_MPES_EXEC_PLMZ_RESB_STR-PLNTY sy-vline 
WA_MPES_EXEC_PLMZ_RESB_STR-PLNNR sy-vline 
WA_MPES_EXEC_PLMZ_RESB_STR-ZUONR sy-vline 
WA_MPES_EXEC_PLMZ_RESB_STR-ZAEHL sy-vline 
WA_MPES_EXEC_PLMZ_RESB_STR-RSNUM sy-vline 
WA_MPES_EXEC_PLMZ_RESB_STR-RSPOS sy-vline 
WA_MPES_EXEC_PLMZ_RESB_STR-RSART sy-vline 
WA_MPES_EXEC_PLMZ_RESB_STR-PLNFL sy-vline 
WA_MPES_EXEC_PLMZ_RESB_STR-APLZL sy-vline 
WA_MPES_EXEC_PLMZ_RESB_STR-VORNR sy-vline 
WA_MPES_EXEC_PLMZ_RESB_STR-KZAUS sy-vline 
WA_MPES_EXEC_PLMZ_RESB_STR-ALPGR sy-vline 
WA_MPES_EXEC_PLMZ_RESB_STR-NFEAG sy-vline 
WA_MPES_EXEC_PLMZ_RESB_STR-AUFST sy-vline 
WA_MPES_EXEC_PLMZ_RESB_STR-AUFWG sy-vline 
WA_MPES_EXEC_PLMZ_RESB_STR-BAUST sy-vline 
WA_MPES_EXEC_PLMZ_RESB_STR-BAUWG sy-vline 
WA_MPES_EXEC_PLMZ_RESB_STR-INDEX_RESBB sy-vline      INTO ld_text SEPARATED BY SPACE.

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