ABAP Select data from SAP table ARUN_S_DMND_MNTR_SELECTION into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ARUN_S_DMND_MNTR_SELECTION
*  INTO TABLE @DATA(IT_ARUN_S_DMND_MNTR_SELECTION2).
*--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_ARUN_S_DMND_MNTR_SELECTION INDEX 1 INTO DATA(WA_ARUN_S_DMND_MNTR_SELECTION2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ARUN_S_DMND_MNTR_SELECTION>-S_DOCITM = 1.
<ARUN_S_DMND_MNTR_SELECTION>-S_REQNO = 1.
<ARUN_S_DMND_MNTR_SELECTION>-S_REQDDT = 1.
<ARUN_S_DMND_MNTR_SELECTION>-S_BDART = 1.
<ARUN_S_DMND_MNTR_SELECTION>-S_RCAT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ARUN_S_DMND_MNTR_SELECTION-S_MATNR, sy-vline,
  WA_ARUN_S_DMND_MNTR_SELECTION-S_WERKS, sy-vline,
  WA_ARUN_S_DMND_MNTR_SELECTION-S_KUNNR, sy-vline,
  WA_ARUN_S_DMND_MNTR_SELECTION-S_MATKL, sy-vline,
  WA_ARUN_S_DMND_MNTR_SELECTION-S_SATNR, sy-vline,
  WA_ARUN_S_DMND_MNTR_SELECTION-S_VKORG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ARUN_S_DMND_MNTR_SELECTION 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_ARUN_S_DMND_MNTR_SELECTION 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_ARUN_S_DMND_MNTR_SELECTION INTO WA_ARUN_S_DMND_MNTR_SELECTION.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_ARUN_S_DMND_MNTR_SELECTION_STR, 
S_DOCITM TYPE STRING,
S_REQNO TYPE STRING,
S_REQDDT TYPE STRING,
S_BDART TYPE STRING,
S_RCAT TYPE STRING,
S_MATNR TYPE STRING,
S_WERKS TYPE STRING,
S_KUNNR TYPE STRING,
S_MATKL TYPE STRING,
S_SATNR TYPE STRING,
S_VKORG TYPE STRING,
S_VTWEG TYPE STRING,
S_SPART TYPE STRING,
S_BZIRK TYPE STRING,
S_BUKRS TYPE STRING,
S_KDGRP TYPE STRING,
S_ISSUE TYPE STRING,
S_SITNS TYPE STRING,
S_SPAVST TYPE STRING,
S_CANDT TYPE STRING,
S_CANHRZ TYPE STRING,
S_SAISO TYPE STRING,
S_SAISJ TYPE STRING,
S_COLL TYPE STRING,
S_THEME TYPE STRING,
S_ARUNID TYPE STRING,
S_SUPNO TYPE STRING,
S_SUPDDT TYPE STRING,
S_CHARG TYPE STRING,
S_LGORT TYPE STRING,
S_BSKZ TYPE STRING,
S_ARUNST TYPE STRING,
S_SCAT TYPE STRING,
P_UNASGN TYPE STRING,
P_UNPRCT TYPE STRING,
P_UNQTY TYPE STRING,
P_JOBTXT TYPE STRING,
S_EBELN TYPE STRING,
S_LIFNR TYPE STRING,
P_ASGN TYPE STRING,
S_REQNUM TYPE STRING,
S_ARULE TYPE STRING,
S_SRULE TYPE STRING,
S_REQDEL TYPE STRING,
S_REQREL TYPE STRING,
P_DELIVR TYPE STRING,
P_RELEAS TYPE STRING,
P_OPNRLS TYPE STRING,
P_RESERV TYPE STRING,
P_ONHOLD TYPE STRING,
P_READY TYPE STRING,
P_HOLD TYPE STRING,
P_RELPER TYPE STRING,
P_BLOCK TYPE STRING,
P_RDYBLK TYPE STRING,
P_HLDBLK TYPE STRING,
P_TRGHLD TYPE STRING,
P_TRGRES TYPE STRING,
P_BLKPER TYPE STRING,
S_REQBLK TYPE STRING,
S_TRFFRM TYPE STRING,
S_TRFTO TYPE STRING,
P_TRFPER TYPE STRING,
P_TRNSFR TYPE STRING,
S_ARRULE TYPE STRING,
S_SORULE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ARUN_S_DMND_MNTR_SELECTION_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_ARUN_S_DMND_MNTR_SELECTION_STR-S_DOCITM sy-vline 
WA_ARUN_S_DMND_MNTR_SELECTION_STR-S_REQNO sy-vline 
WA_ARUN_S_DMND_MNTR_SELECTION_STR-S_REQDDT sy-vline 
WA_ARUN_S_DMND_MNTR_SELECTION_STR-S_BDART sy-vline 
WA_ARUN_S_DMND_MNTR_SELECTION_STR-S_RCAT sy-vline 
WA_ARUN_S_DMND_MNTR_SELECTION_STR-S_MATNR sy-vline 
WA_ARUN_S_DMND_MNTR_SELECTION_STR-S_WERKS sy-vline 
WA_ARUN_S_DMND_MNTR_SELECTION_STR-S_KUNNR sy-vline 
WA_ARUN_S_DMND_MNTR_SELECTION_STR-S_MATKL sy-vline 
WA_ARUN_S_DMND_MNTR_SELECTION_STR-S_SATNR sy-vline 
WA_ARUN_S_DMND_MNTR_SELECTION_STR-S_VKORG sy-vline 
WA_ARUN_S_DMND_MNTR_SELECTION_STR-S_VTWEG sy-vline 
WA_ARUN_S_DMND_MNTR_SELECTION_STR-S_SPART sy-vline 
WA_ARUN_S_DMND_MNTR_SELECTION_STR-S_BZIRK sy-vline 
WA_ARUN_S_DMND_MNTR_SELECTION_STR-S_BUKRS sy-vline 
WA_ARUN_S_DMND_MNTR_SELECTION_STR-S_KDGRP sy-vline 
WA_ARUN_S_DMND_MNTR_SELECTION_STR-S_ISSUE sy-vline 
WA_ARUN_S_DMND_MNTR_SELECTION_STR-S_SITNS sy-vline 
WA_ARUN_S_DMND_MNTR_SELECTION_STR-S_SPAVST sy-vline 
WA_ARUN_S_DMND_MNTR_SELECTION_STR-S_CANDT sy-vline 
WA_ARUN_S_DMND_MNTR_SELECTION_STR-S_CANHRZ sy-vline 
WA_ARUN_S_DMND_MNTR_SELECTION_STR-S_SAISO sy-vline 
WA_ARUN_S_DMND_MNTR_SELECTION_STR-S_SAISJ sy-vline 
WA_ARUN_S_DMND_MNTR_SELECTION_STR-S_COLL sy-vline 
WA_ARUN_S_DMND_MNTR_SELECTION_STR-S_THEME sy-vline 
WA_ARUN_S_DMND_MNTR_SELECTION_STR-S_ARUNID sy-vline 
WA_ARUN_S_DMND_MNTR_SELECTION_STR-S_SUPNO sy-vline 
WA_ARUN_S_DMND_MNTR_SELECTION_STR-S_SUPDDT sy-vline 
WA_ARUN_S_DMND_MNTR_SELECTION_STR-S_CHARG sy-vline 
WA_ARUN_S_DMND_MNTR_SELECTION_STR-S_LGORT sy-vline 
WA_ARUN_S_DMND_MNTR_SELECTION_STR-S_BSKZ sy-vline 
WA_ARUN_S_DMND_MNTR_SELECTION_STR-S_ARUNST sy-vline 
WA_ARUN_S_DMND_MNTR_SELECTION_STR-S_SCAT sy-vline 
WA_ARUN_S_DMND_MNTR_SELECTION_STR-P_UNASGN sy-vline 
WA_ARUN_S_DMND_MNTR_SELECTION_STR-P_UNPRCT sy-vline 
WA_ARUN_S_DMND_MNTR_SELECTION_STR-P_UNQTY sy-vline 
WA_ARUN_S_DMND_MNTR_SELECTION_STR-P_JOBTXT sy-vline 
WA_ARUN_S_DMND_MNTR_SELECTION_STR-S_EBELN sy-vline 
WA_ARUN_S_DMND_MNTR_SELECTION_STR-S_LIFNR sy-vline 
WA_ARUN_S_DMND_MNTR_SELECTION_STR-P_ASGN sy-vline 
WA_ARUN_S_DMND_MNTR_SELECTION_STR-S_REQNUM sy-vline 
WA_ARUN_S_DMND_MNTR_SELECTION_STR-S_ARULE sy-vline 
WA_ARUN_S_DMND_MNTR_SELECTION_STR-S_SRULE sy-vline 
WA_ARUN_S_DMND_MNTR_SELECTION_STR-S_REQDEL sy-vline 
WA_ARUN_S_DMND_MNTR_SELECTION_STR-S_REQREL sy-vline 
WA_ARUN_S_DMND_MNTR_SELECTION_STR-P_DELIVR sy-vline 
WA_ARUN_S_DMND_MNTR_SELECTION_STR-P_RELEAS sy-vline 
WA_ARUN_S_DMND_MNTR_SELECTION_STR-P_OPNRLS sy-vline 
WA_ARUN_S_DMND_MNTR_SELECTION_STR-P_RESERV sy-vline 
WA_ARUN_S_DMND_MNTR_SELECTION_STR-P_ONHOLD sy-vline 
WA_ARUN_S_DMND_MNTR_SELECTION_STR-P_READY sy-vline 
WA_ARUN_S_DMND_MNTR_SELECTION_STR-P_HOLD sy-vline 
WA_ARUN_S_DMND_MNTR_SELECTION_STR-P_RELPER sy-vline 
WA_ARUN_S_DMND_MNTR_SELECTION_STR-P_BLOCK sy-vline 
WA_ARUN_S_DMND_MNTR_SELECTION_STR-P_RDYBLK sy-vline 
WA_ARUN_S_DMND_MNTR_SELECTION_STR-P_HLDBLK sy-vline 
WA_ARUN_S_DMND_MNTR_SELECTION_STR-P_TRGHLD sy-vline 
WA_ARUN_S_DMND_MNTR_SELECTION_STR-P_TRGRES sy-vline 
WA_ARUN_S_DMND_MNTR_SELECTION_STR-P_BLKPER sy-vline 
WA_ARUN_S_DMND_MNTR_SELECTION_STR-S_REQBLK sy-vline 
WA_ARUN_S_DMND_MNTR_SELECTION_STR-S_TRFFRM sy-vline 
WA_ARUN_S_DMND_MNTR_SELECTION_STR-S_TRFTO sy-vline 
WA_ARUN_S_DMND_MNTR_SELECTION_STR-P_TRFPER sy-vline 
WA_ARUN_S_DMND_MNTR_SELECTION_STR-P_TRNSFR sy-vline 
WA_ARUN_S_DMND_MNTR_SELECTION_STR-S_ARRULE sy-vline 
WA_ARUN_S_DMND_MNTR_SELECTION_STR-S_SORULE sy-vline      INTO ld_text SEPARATED BY SPACE.

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