ABAP Select data from SAP table WLF_IV_HELP_PARAM_REP into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WLF_IV_HELP_PARAM_REP
*  INTO TABLE @DATA(IT_WLF_IV_HELP_PARAM_REP2).
*--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_WLF_IV_HELP_PARAM_REP INDEX 1 INTO DATA(WA_WLF_IV_HELP_PARAM_REP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WLF_IV_HELP_PARAM_REP>-P_WBELRL = 1.
<WLF_IV_HELP_PARAM_REP>-P_SR_G = 1.
<WLF_IV_HELP_PARAM_REP>-P_EKORG = 1.
<WLF_IV_HELP_PARAM_REP>-P_EKGRP = 1.
<WLF_IV_HELP_PARAM_REP>-P_BUKRS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WLF_IV_HELP_PARAM_REP-P_VKORG, sy-vline,
  WA_WLF_IV_HELP_PARAM_REP-P_SPART, sy-vline,
  WA_WLF_IV_HELP_PARAM_REP-P_VTWEG, sy-vline,
  WA_WLF_IV_HELP_PARAM_REP-P_BLDAT, sy-vline,
  WA_WLF_IV_HELP_PARAM_REP-P_WAERL, sy-vline,
  WA_WLF_IV_HELP_PARAM_REP-P_BKTXT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WLF_IV_HELP_PARAM_REP 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_WLF_IV_HELP_PARAM_REP 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_WLF_IV_HELP_PARAM_REP INTO WA_WLF_IV_HELP_PARAM_REP.


*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_WLF_IV_HELP_PARAM_REP_STR, 
P_WBELRL TYPE STRING,
P_SR_G TYPE STRING,
P_EKORG TYPE STRING,
P_EKGRP TYPE STRING,
P_BUKRS TYPE STRING,
P_VKORG TYPE STRING,
P_SPART TYPE STRING,
P_VTWEG TYPE STRING,
P_BLDAT TYPE STRING,
P_WAERL TYPE STRING,
P_BKTXT TYPE STRING,
P_TOL TYPE STRING,
P_NO_TOL TYPE STRING,
P_T_GRP TYPE STRING,
P_AP_ABS TYPE STRING,
P_AP_PRZ TYPE STRING,
P_EP_ABS TYPE STRING,
P_EP_PRZ TYPE STRING,
P_LA_MC TYPE STRING,
P_PA_QC TYPE STRING,
P_ACC_C TYPE STRING,
R_EKORG TYPE STRING,
R_VKORG TYPE STRING,
P_PROCVA TYPE STRING,
P_CHK_NB TYPE STRING,
P_AUTOM TYPE STRING,
P_AUTMIV TYPE STRING,
P_CURCLE TYPE STRING,
P_DETLIS TYPE STRING,
P_ALLLIS TYPE STRING,
P_ERRLIS TYPE STRING,
P_ATTA TYPE STRING,
A_RRLREC TYPE STRING,
A_WBELN TYPE STRING,
A_WFDAT TYPE STRING,
A_RLDAT TYPE STRING,
A_BLDAT TYPE STRING,
A_ERDAT TYPE STRING,
A_LFART TYPE STRING,
A_WAERL TYPE STRING,
X_XBLNR TYPE STRING,
X_WFDAT TYPE STRING,
X_KIDNO TYPE STRING,
X_BLDAT TYPE STRING,
X_WBELN TYPE STRING,
X_ERDAT TYPE STRING,
X_LFART TYPE STRING,
X_RFBSK TYPE STRING,
V_XBLNR TYPE STRING,
V_ZUONR TYPE STRING,
V_WFDAT TYPE STRING,
V_BLDAT TYPE STRING,
V_ERDAT TYPE STRING,
V_WBELN TYPE STRING,
V_LFART TYPE STRING,
V_RFBSK TYPE STRING,
P_OLD TYPE STRING,
C_LFTYPS TYPE STRING,
C_WBELN TYPE STRING,
C_WRART TYPE STRING,
C_LFART TYPE STRING,
C_XBLNR TYPE STRING,
C_WFDAT TYPE STRING,
C_BLDAT TYPE STRING,
G_XBLNR TYPE STRING,
G_RFBSK TYPE STRING,
G_WBELN TYPE STRING,
G_WFDAT TYPE STRING,
G_BLDAT TYPE STRING,
G_COMP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WLF_IV_HELP_PARAM_REP_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_WLF_IV_HELP_PARAM_REP_STR-P_WBELRL sy-vline 
WA_WLF_IV_HELP_PARAM_REP_STR-P_SR_G sy-vline 
WA_WLF_IV_HELP_PARAM_REP_STR-P_EKORG sy-vline 
WA_WLF_IV_HELP_PARAM_REP_STR-P_EKGRP sy-vline 
WA_WLF_IV_HELP_PARAM_REP_STR-P_BUKRS sy-vline 
WA_WLF_IV_HELP_PARAM_REP_STR-P_VKORG sy-vline 
WA_WLF_IV_HELP_PARAM_REP_STR-P_SPART sy-vline 
WA_WLF_IV_HELP_PARAM_REP_STR-P_VTWEG sy-vline 
WA_WLF_IV_HELP_PARAM_REP_STR-P_BLDAT sy-vline 
WA_WLF_IV_HELP_PARAM_REP_STR-P_WAERL sy-vline 
WA_WLF_IV_HELP_PARAM_REP_STR-P_BKTXT sy-vline 
WA_WLF_IV_HELP_PARAM_REP_STR-P_TOL sy-vline 
WA_WLF_IV_HELP_PARAM_REP_STR-P_NO_TOL sy-vline 
WA_WLF_IV_HELP_PARAM_REP_STR-P_T_GRP sy-vline 
WA_WLF_IV_HELP_PARAM_REP_STR-P_AP_ABS sy-vline 
WA_WLF_IV_HELP_PARAM_REP_STR-P_AP_PRZ sy-vline 
WA_WLF_IV_HELP_PARAM_REP_STR-P_EP_ABS sy-vline 
WA_WLF_IV_HELP_PARAM_REP_STR-P_EP_PRZ sy-vline 
WA_WLF_IV_HELP_PARAM_REP_STR-P_LA_MC sy-vline 
WA_WLF_IV_HELP_PARAM_REP_STR-P_PA_QC sy-vline 
WA_WLF_IV_HELP_PARAM_REP_STR-P_ACC_C sy-vline 
WA_WLF_IV_HELP_PARAM_REP_STR-R_EKORG sy-vline 
WA_WLF_IV_HELP_PARAM_REP_STR-R_VKORG sy-vline 
WA_WLF_IV_HELP_PARAM_REP_STR-P_PROCVA sy-vline 
WA_WLF_IV_HELP_PARAM_REP_STR-P_CHK_NB sy-vline 
WA_WLF_IV_HELP_PARAM_REP_STR-P_AUTOM sy-vline 
WA_WLF_IV_HELP_PARAM_REP_STR-P_AUTMIV sy-vline 
WA_WLF_IV_HELP_PARAM_REP_STR-P_CURCLE sy-vline 
WA_WLF_IV_HELP_PARAM_REP_STR-P_DETLIS sy-vline 
WA_WLF_IV_HELP_PARAM_REP_STR-P_ALLLIS sy-vline 
WA_WLF_IV_HELP_PARAM_REP_STR-P_ERRLIS sy-vline 
WA_WLF_IV_HELP_PARAM_REP_STR-P_ATTA sy-vline 
WA_WLF_IV_HELP_PARAM_REP_STR-A_RRLREC sy-vline 
WA_WLF_IV_HELP_PARAM_REP_STR-A_WBELN sy-vline 
WA_WLF_IV_HELP_PARAM_REP_STR-A_WFDAT sy-vline 
WA_WLF_IV_HELP_PARAM_REP_STR-A_RLDAT sy-vline 
WA_WLF_IV_HELP_PARAM_REP_STR-A_BLDAT sy-vline 
WA_WLF_IV_HELP_PARAM_REP_STR-A_ERDAT sy-vline 
WA_WLF_IV_HELP_PARAM_REP_STR-A_LFART sy-vline 
WA_WLF_IV_HELP_PARAM_REP_STR-A_WAERL sy-vline 
WA_WLF_IV_HELP_PARAM_REP_STR-X_XBLNR sy-vline 
WA_WLF_IV_HELP_PARAM_REP_STR-X_WFDAT sy-vline 
WA_WLF_IV_HELP_PARAM_REP_STR-X_KIDNO sy-vline 
WA_WLF_IV_HELP_PARAM_REP_STR-X_BLDAT sy-vline 
WA_WLF_IV_HELP_PARAM_REP_STR-X_WBELN sy-vline 
WA_WLF_IV_HELP_PARAM_REP_STR-X_ERDAT sy-vline 
WA_WLF_IV_HELP_PARAM_REP_STR-X_LFART sy-vline 
WA_WLF_IV_HELP_PARAM_REP_STR-X_RFBSK sy-vline 
WA_WLF_IV_HELP_PARAM_REP_STR-V_XBLNR sy-vline 
WA_WLF_IV_HELP_PARAM_REP_STR-V_ZUONR sy-vline 
WA_WLF_IV_HELP_PARAM_REP_STR-V_WFDAT sy-vline 
WA_WLF_IV_HELP_PARAM_REP_STR-V_BLDAT sy-vline 
WA_WLF_IV_HELP_PARAM_REP_STR-V_ERDAT sy-vline 
WA_WLF_IV_HELP_PARAM_REP_STR-V_WBELN sy-vline 
WA_WLF_IV_HELP_PARAM_REP_STR-V_LFART sy-vline 
WA_WLF_IV_HELP_PARAM_REP_STR-V_RFBSK sy-vline 
WA_WLF_IV_HELP_PARAM_REP_STR-P_OLD sy-vline 
WA_WLF_IV_HELP_PARAM_REP_STR-C_LFTYPS sy-vline 
WA_WLF_IV_HELP_PARAM_REP_STR-C_WBELN sy-vline 
WA_WLF_IV_HELP_PARAM_REP_STR-C_WRART sy-vline 
WA_WLF_IV_HELP_PARAM_REP_STR-C_LFART sy-vline 
WA_WLF_IV_HELP_PARAM_REP_STR-C_XBLNR sy-vline 
WA_WLF_IV_HELP_PARAM_REP_STR-C_WFDAT sy-vline 
WA_WLF_IV_HELP_PARAM_REP_STR-C_BLDAT sy-vline 
WA_WLF_IV_HELP_PARAM_REP_STR-G_XBLNR sy-vline 
WA_WLF_IV_HELP_PARAM_REP_STR-G_RFBSK sy-vline 
WA_WLF_IV_HELP_PARAM_REP_STR-G_WBELN sy-vline 
WA_WLF_IV_HELP_PARAM_REP_STR-G_WFDAT sy-vline 
WA_WLF_IV_HELP_PARAM_REP_STR-G_BLDAT sy-vline 
WA_WLF_IV_HELP_PARAM_REP_STR-G_COMP sy-vline      INTO ld_text SEPARATED BY SPACE.

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