ABAP Select data from SAP table WRF_POHF_POLX_STY into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WRF_POHF_POLX_STY
*  INTO TABLE @DATA(IT_WRF_POHF_POLX_STY2).
*--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_WRF_POHF_POLX_STY INDEX 1 INTO DATA(WA_WRF_POHF_POLX_STY2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WRF_POHF_POLX_STY>-POL_ID = 1.
<WRF_POHF_POLX_STY>-BSART = 1.
<WRF_POHF_POLX_STY>-BUKRS = 1.
<WRF_POHF_POLX_STY>-EKORG = 1.
<WRF_POHF_POLX_STY>-EKGRP = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WRF_POHF_POLX_STY-LIFNR, sy-vline,
  WA_WRF_POHF_POLX_STY-PSTYP, sy-vline,
  WA_WRF_POHF_POLX_STY-WAERS, sy-vline,
  WA_WRF_POHF_POLX_STY-WERKS, sy-vline,
  WA_WRF_POHF_POLX_STY-MATKL, sy-vline,
  WA_WRF_POHF_POLX_STY-TXZ01, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WRF_POHF_POLX_STY 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_WRF_POHF_POLX_STY 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_WRF_POHF_POLX_STY INTO WA_WRF_POHF_POLX_STY.


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

*Conversion exit ALPHA, internal->external for field TEMP_POL_ID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_WRF_POHF_POLX_STY-TEMP_POL_ID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WRF_POHF_POLX_STY-TEMP_POL_ID.
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_WRF_POHF_POLX_STY_STR, 
POL_ID TYPE STRING,
BSART TYPE STRING,
BUKRS TYPE STRING,
EKORG TYPE STRING,
EKGRP TYPE STRING,
LIFNR TYPE STRING,
PSTYP TYPE STRING,
WAERS TYPE STRING,
WERKS TYPE STRING,
MATKL TYPE STRING,
TXZ01 TYPE STRING,
IDNLF TYPE STRING,
MATNR TYPE STRING,
MENGE TYPE STRING,
BSTME TYPE STRING,
MEINS TYPE STRING,
BPRME TYPE STRING,
BPUMZ TYPE STRING,
BPUMN TYPE STRING,
UMREZ TYPE STRING,
UMREN TYPE STRING,
NETPR TYPE STRING,
PEINH TYPE STRING,
LATEST_PO_DATE TYPE STRING,
EINDT TYPE STRING,
SATNR TYPE STRING,
ATTYP TYPE STRING,
AKTNR TYPE STRING,
SAISO TYPE STRING,
SAISJ TYPE STRING,
AUREL TYPE STRING,
UPTYP TYPE STRING,
UPVOR TYPE STRING,
UEB_ID TYPE STRING,
STAPO TYPE STRING,
FIXPO TYPE STRING,
NOROUND TYPE STRING,
HIER_ID TYPE STRING,
HIER_NODE TYPE STRING,
ROLLOUT TYPE STRING,
KEYFIG TYPE STRING,
PRICE_FIX TYPE STRING,
CON_EBELN TYPE STRING,
CON_EBELP TYPE STRING,
UPDFLAG TYPE STRING,
ERROR_FLAG TYPE STRING,
OTB_STATUS TYPE STRING,
LOEKZ TYPE STRING,
CUOBJ TYPE STRING,
INCO1 TYPE STRING,
INCO2 TYPE STRING,
DL_ID TYPE STRING,
HANDOVER_DATE TYPE STRING,
HANDOVER_COUNTRY TYPE STRING,
HANDOVER_CITY TYPE STRING,
SOURCE_ID TYPE STRING,
SOURCE_KEY TYPE STRING,
SOURCE_UEBID TYPE STRING,
TIMESTAMP TYPE STRING,
UNAME TYPE STRING,
PROGRAMM TYPE STRING,
EPSTP TYPE STRING,
TEMP_POL_ID TYPE STRING,
CONTR_CHG TYPE STRING,
PSTYP_CHG TYPE STRING,
LTSNR TYPE STRING,
UZEIT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WRF_POHF_POLX_STY_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_WRF_POHF_POLX_STY_STR-POL_ID sy-vline 
WA_WRF_POHF_POLX_STY_STR-BSART sy-vline 
WA_WRF_POHF_POLX_STY_STR-BUKRS sy-vline 
WA_WRF_POHF_POLX_STY_STR-EKORG sy-vline 
WA_WRF_POHF_POLX_STY_STR-EKGRP sy-vline 
WA_WRF_POHF_POLX_STY_STR-LIFNR sy-vline 
WA_WRF_POHF_POLX_STY_STR-PSTYP sy-vline 
WA_WRF_POHF_POLX_STY_STR-WAERS sy-vline 
WA_WRF_POHF_POLX_STY_STR-WERKS sy-vline 
WA_WRF_POHF_POLX_STY_STR-MATKL sy-vline 
WA_WRF_POHF_POLX_STY_STR-TXZ01 sy-vline 
WA_WRF_POHF_POLX_STY_STR-IDNLF sy-vline 
WA_WRF_POHF_POLX_STY_STR-MATNR sy-vline 
WA_WRF_POHF_POLX_STY_STR-MENGE sy-vline 
WA_WRF_POHF_POLX_STY_STR-BSTME sy-vline 
WA_WRF_POHF_POLX_STY_STR-MEINS sy-vline 
WA_WRF_POHF_POLX_STY_STR-BPRME sy-vline 
WA_WRF_POHF_POLX_STY_STR-BPUMZ sy-vline 
WA_WRF_POHF_POLX_STY_STR-BPUMN sy-vline 
WA_WRF_POHF_POLX_STY_STR-UMREZ sy-vline 
WA_WRF_POHF_POLX_STY_STR-UMREN sy-vline 
WA_WRF_POHF_POLX_STY_STR-NETPR sy-vline 
WA_WRF_POHF_POLX_STY_STR-PEINH sy-vline 
WA_WRF_POHF_POLX_STY_STR-LATEST_PO_DATE sy-vline 
WA_WRF_POHF_POLX_STY_STR-EINDT sy-vline 
WA_WRF_POHF_POLX_STY_STR-SATNR sy-vline 
WA_WRF_POHF_POLX_STY_STR-ATTYP sy-vline 
WA_WRF_POHF_POLX_STY_STR-AKTNR sy-vline 
WA_WRF_POHF_POLX_STY_STR-SAISO sy-vline 
WA_WRF_POHF_POLX_STY_STR-SAISJ sy-vline 
WA_WRF_POHF_POLX_STY_STR-AUREL sy-vline 
WA_WRF_POHF_POLX_STY_STR-UPTYP sy-vline 
WA_WRF_POHF_POLX_STY_STR-UPVOR sy-vline 
WA_WRF_POHF_POLX_STY_STR-UEB_ID sy-vline 
WA_WRF_POHF_POLX_STY_STR-STAPO sy-vline 
WA_WRF_POHF_POLX_STY_STR-FIXPO sy-vline 
WA_WRF_POHF_POLX_STY_STR-NOROUND sy-vline 
WA_WRF_POHF_POLX_STY_STR-HIER_ID sy-vline 
WA_WRF_POHF_POLX_STY_STR-HIER_NODE sy-vline 
WA_WRF_POHF_POLX_STY_STR-ROLLOUT sy-vline 
WA_WRF_POHF_POLX_STY_STR-KEYFIG sy-vline 
WA_WRF_POHF_POLX_STY_STR-PRICE_FIX sy-vline 
WA_WRF_POHF_POLX_STY_STR-CON_EBELN sy-vline 
WA_WRF_POHF_POLX_STY_STR-CON_EBELP sy-vline 
WA_WRF_POHF_POLX_STY_STR-UPDFLAG sy-vline 
WA_WRF_POHF_POLX_STY_STR-ERROR_FLAG sy-vline 
WA_WRF_POHF_POLX_STY_STR-OTB_STATUS sy-vline 
WA_WRF_POHF_POLX_STY_STR-LOEKZ sy-vline 
WA_WRF_POHF_POLX_STY_STR-CUOBJ sy-vline 
WA_WRF_POHF_POLX_STY_STR-INCO1 sy-vline 
WA_WRF_POHF_POLX_STY_STR-INCO2 sy-vline 
WA_WRF_POHF_POLX_STY_STR-DL_ID sy-vline 
WA_WRF_POHF_POLX_STY_STR-HANDOVER_DATE sy-vline 
WA_WRF_POHF_POLX_STY_STR-HANDOVER_COUNTRY sy-vline 
WA_WRF_POHF_POLX_STY_STR-HANDOVER_CITY sy-vline 
WA_WRF_POHF_POLX_STY_STR-SOURCE_ID sy-vline 
WA_WRF_POHF_POLX_STY_STR-SOURCE_KEY sy-vline 
WA_WRF_POHF_POLX_STY_STR-SOURCE_UEBID sy-vline 
WA_WRF_POHF_POLX_STY_STR-TIMESTAMP sy-vline 
WA_WRF_POHF_POLX_STY_STR-UNAME sy-vline 
WA_WRF_POHF_POLX_STY_STR-PROGRAMM sy-vline 
WA_WRF_POHF_POLX_STY_STR-EPSTP sy-vline 
WA_WRF_POHF_POLX_STY_STR-TEMP_POL_ID sy-vline 
WA_WRF_POHF_POLX_STY_STR-CONTR_CHG sy-vline 
WA_WRF_POHF_POLX_STY_STR-PSTYP_CHG sy-vline 
WA_WRF_POHF_POLX_STY_STR-LTSNR sy-vline 
WA_WRF_POHF_POLX_STY_STR-UZEIT sy-vline      INTO ld_text SEPARATED BY SPACE.

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