ABAP Select data from SAP table MPLAN_MPOS_UPDATE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MPLAN_MPOS_UPDATE
*  INTO TABLE @DATA(IT_MPLAN_MPOS_UPDATE2).
*--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_MPLAN_MPOS_UPDATE INDEX 1 INTO DATA(WA_MPLAN_MPOS_UPDATE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MPLAN_MPOS_UPDATE>-WAPOS = 1.
<MPLAN_MPOS_UPDATE>-WARPL = 1.
<MPLAN_MPOS_UPDATE>-WSTRA = 1.
<MPLAN_MPOS_UPDATE>-WPPOS = 1.
<MPLAN_MPOS_UPDATE>-PSTXT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MPLAN_MPOS_UPDATE-EQUNR, sy-vline,
  WA_MPLAN_MPOS_UPDATE-OBKNR, sy-vline,
  WA_MPLAN_MPOS_UPDATE-ERKNZ, sy-vline,
  WA_MPLAN_MPOS_UPDATE-AEKNZ, sy-vline,
  WA_MPLAN_MPOS_UPDATE-ERNAM, sy-vline,
  WA_MPLAN_MPOS_UPDATE-ERSDT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MPLAN_MPOS_UPDATE 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_MPLAN_MPOS_UPDATE 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_MPLAN_MPOS_UPDATE INTO WA_MPLAN_MPOS_UPDATE.


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

*Conversion exit ALPHA, internal->external for field WARPL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MPLAN_MPOS_UPDATE-WARPL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MPLAN_MPOS_UPDATE-WARPL.
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_MPLAN_MPOS_UPDATE_STR, 
WAPOS TYPE STRING,
WARPL TYPE STRING,
WSTRA TYPE STRING,
WPPOS TYPE STRING,
PSTXT TYPE STRING,
EQUNR TYPE STRING,
OBKNR TYPE STRING,
ERKNZ TYPE STRING,
AEKNZ TYPE STRING,
ERNAM TYPE STRING,
ERSDT TYPE STRING,
AEDAT TYPE STRING,
AENAM TYPE STRING,
PLNTY TYPE STRING,
PLNNR TYPE STRING,
PLNAL TYPE STRING,
STATUS TYPE STRING,
LTKNZ TYPE STRING,
WPGRP TYPE STRING,
OBJTY TYPE STRING,
GEWRK TYPE STRING,
IWERK TYPE STRING,
LANGU TYPE STRING,
ILOAN TYPE STRING,
ILOAI TYPE STRING,
LAUFN TYPE STRING,
BAUTL TYPE STRING,
ANLZU TYPE STRING,
AUART TYPE STRING,
INACT TYPE STRING,
ILART TYPE STRING,
GSBER TYPE STRING,
OBJNR TYPE STRING,
IND_ABRVO TYPE STRING,
PSPEL TYPE STRING,
STD_NETZ TYPE STRING,
STD_AVO TYPE STRING,
KDAUF TYPE STRING,
KDPOS TYPE STRING,
MITYP TYPE STRING,
BSTNR TYPE STRING,
BSTPO TYPE STRING,
PACKNO TYPE STRING,
NETPR TYPE STRING,
WAERS TYPE STRING,
SAKTO TYPE STRING,
AUFNR TYPE STRING,
APFKT TYPE STRING,
SCRRENTY TYPE STRING,
SERIALNR TYPE STRING,
SERMAT TYPE STRING,
DEVICEID TYPE STRING,
QMNUM TYPE STRING,
QMART TYPE STRING,
LBLNI TYPE STRING,
TASK_DETERMINE TYPE STRING,
PRIOK TYPE STRING,
QMKAT TYPE STRING,
QMGRP TYPE STRING,
QMCOD TYPE STRING,
PHYNR TYPE STRING,
ART TYPE STRING,
PRUEFLOS TYPE STRING,
TPLNR TYPE STRING,
DUMMY_MPOS_INCL_EEW_PS TYPE STRING,
PROCESS_TYPE TYPE STRING,
DESCRIPTION TYPE STRING,
CYCLESEQIND TYPE STRING,
ADPSP TYPE STRING,
NO_AUFRELKZ TYPE STRING,
SERVICE_DOCUMENT_TYPE TYPE STRING,
SERVICE_CONTRACT TYPE STRING,
SERVICE_CONTRACT_ITEM TYPE STRING,
SERVICE_TEMPLATE TYPE STRING,
PRODUCT TYPE STRING,
SERVICE_PRIORITY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MPLAN_MPOS_UPDATE_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_MPLAN_MPOS_UPDATE_STR-WAPOS sy-vline 
WA_MPLAN_MPOS_UPDATE_STR-WARPL sy-vline 
WA_MPLAN_MPOS_UPDATE_STR-WSTRA sy-vline 
WA_MPLAN_MPOS_UPDATE_STR-WPPOS sy-vline 
WA_MPLAN_MPOS_UPDATE_STR-PSTXT sy-vline 
WA_MPLAN_MPOS_UPDATE_STR-EQUNR sy-vline 
WA_MPLAN_MPOS_UPDATE_STR-OBKNR sy-vline 
WA_MPLAN_MPOS_UPDATE_STR-ERKNZ sy-vline 
WA_MPLAN_MPOS_UPDATE_STR-AEKNZ sy-vline 
WA_MPLAN_MPOS_UPDATE_STR-ERNAM sy-vline 
WA_MPLAN_MPOS_UPDATE_STR-ERSDT sy-vline 
WA_MPLAN_MPOS_UPDATE_STR-AEDAT sy-vline 
WA_MPLAN_MPOS_UPDATE_STR-AENAM sy-vline 
WA_MPLAN_MPOS_UPDATE_STR-PLNTY sy-vline 
WA_MPLAN_MPOS_UPDATE_STR-PLNNR sy-vline 
WA_MPLAN_MPOS_UPDATE_STR-PLNAL sy-vline 
WA_MPLAN_MPOS_UPDATE_STR-STATUS sy-vline 
WA_MPLAN_MPOS_UPDATE_STR-LTKNZ sy-vline 
WA_MPLAN_MPOS_UPDATE_STR-WPGRP sy-vline 
WA_MPLAN_MPOS_UPDATE_STR-OBJTY sy-vline 
WA_MPLAN_MPOS_UPDATE_STR-GEWRK sy-vline 
WA_MPLAN_MPOS_UPDATE_STR-IWERK sy-vline 
WA_MPLAN_MPOS_UPDATE_STR-LANGU sy-vline 
WA_MPLAN_MPOS_UPDATE_STR-ILOAN sy-vline 
WA_MPLAN_MPOS_UPDATE_STR-ILOAI sy-vline 
WA_MPLAN_MPOS_UPDATE_STR-LAUFN sy-vline 
WA_MPLAN_MPOS_UPDATE_STR-BAUTL sy-vline 
WA_MPLAN_MPOS_UPDATE_STR-ANLZU sy-vline 
WA_MPLAN_MPOS_UPDATE_STR-AUART sy-vline 
WA_MPLAN_MPOS_UPDATE_STR-INACT sy-vline 
WA_MPLAN_MPOS_UPDATE_STR-ILART sy-vline 
WA_MPLAN_MPOS_UPDATE_STR-GSBER sy-vline 
WA_MPLAN_MPOS_UPDATE_STR-OBJNR sy-vline 
WA_MPLAN_MPOS_UPDATE_STR-IND_ABRVO sy-vline 
WA_MPLAN_MPOS_UPDATE_STR-PSPEL sy-vline 
WA_MPLAN_MPOS_UPDATE_STR-STD_NETZ sy-vline 
WA_MPLAN_MPOS_UPDATE_STR-STD_AVO sy-vline 
WA_MPLAN_MPOS_UPDATE_STR-KDAUF sy-vline 
WA_MPLAN_MPOS_UPDATE_STR-KDPOS sy-vline 
WA_MPLAN_MPOS_UPDATE_STR-MITYP sy-vline 
WA_MPLAN_MPOS_UPDATE_STR-BSTNR sy-vline 
WA_MPLAN_MPOS_UPDATE_STR-BSTPO sy-vline 
WA_MPLAN_MPOS_UPDATE_STR-PACKNO sy-vline 
WA_MPLAN_MPOS_UPDATE_STR-NETPR sy-vline 
WA_MPLAN_MPOS_UPDATE_STR-WAERS sy-vline 
WA_MPLAN_MPOS_UPDATE_STR-SAKTO sy-vline 
WA_MPLAN_MPOS_UPDATE_STR-AUFNR sy-vline 
WA_MPLAN_MPOS_UPDATE_STR-APFKT sy-vline 
WA_MPLAN_MPOS_UPDATE_STR-SCRRENTY sy-vline 
WA_MPLAN_MPOS_UPDATE_STR-SERIALNR sy-vline 
WA_MPLAN_MPOS_UPDATE_STR-SERMAT sy-vline 
WA_MPLAN_MPOS_UPDATE_STR-DEVICEID sy-vline 
WA_MPLAN_MPOS_UPDATE_STR-QMNUM sy-vline 
WA_MPLAN_MPOS_UPDATE_STR-QMART sy-vline 
WA_MPLAN_MPOS_UPDATE_STR-LBLNI sy-vline 
WA_MPLAN_MPOS_UPDATE_STR-TASK_DETERMINE sy-vline 
WA_MPLAN_MPOS_UPDATE_STR-PRIOK sy-vline 
WA_MPLAN_MPOS_UPDATE_STR-QMKAT sy-vline 
WA_MPLAN_MPOS_UPDATE_STR-QMGRP sy-vline 
WA_MPLAN_MPOS_UPDATE_STR-QMCOD sy-vline 
WA_MPLAN_MPOS_UPDATE_STR-PHYNR sy-vline 
WA_MPLAN_MPOS_UPDATE_STR-ART sy-vline 
WA_MPLAN_MPOS_UPDATE_STR-PRUEFLOS sy-vline 
WA_MPLAN_MPOS_UPDATE_STR-TPLNR sy-vline 
WA_MPLAN_MPOS_UPDATE_STR-DUMMY_MPOS_INCL_EEW_PS sy-vline 
WA_MPLAN_MPOS_UPDATE_STR-PROCESS_TYPE sy-vline 
WA_MPLAN_MPOS_UPDATE_STR-DESCRIPTION sy-vline 
WA_MPLAN_MPOS_UPDATE_STR-CYCLESEQIND sy-vline 
WA_MPLAN_MPOS_UPDATE_STR-ADPSP sy-vline 
WA_MPLAN_MPOS_UPDATE_STR-NO_AUFRELKZ sy-vline 
WA_MPLAN_MPOS_UPDATE_STR-SERVICE_DOCUMENT_TYPE sy-vline 
WA_MPLAN_MPOS_UPDATE_STR-SERVICE_CONTRACT sy-vline 
WA_MPLAN_MPOS_UPDATE_STR-SERVICE_CONTRACT_ITEM sy-vline 
WA_MPLAN_MPOS_UPDATE_STR-SERVICE_TEMPLATE sy-vline 
WA_MPLAN_MPOS_UPDATE_STR-PRODUCT sy-vline 
WA_MPLAN_MPOS_UPDATE_STR-SERVICE_PRIORITY sy-vline      INTO ld_text SEPARATED BY SPACE.

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