ABAP Select data from SAP table WLF_HILIST_PL into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP WLF_HILIST_PL 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_HILIST_PL. 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_HILIST_PL 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_HILIST_PL TYPE STANDARD TABLE OF WLF_HILIST_PL,
      WA_WLF_HILIST_PL TYPE WLF_HILIST_PL,
      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_HILIST_PL> TYPE WLF_HILIST_PL.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WLF_HILIST_PL
*  INTO TABLE @DATA(IT_WLF_HILIST_PL2).
*--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_HILIST_PL INDEX 1 INTO DATA(WA_WLF_HILIST_PL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WLF_HILIST_PL>-WBELN = 1.
<WLF_HILIST_PL>-WRART = 1.
<WLF_HILIST_PL>-WRART_TXT = 1.
<WLF_HILIST_PL>-LFART = 1.
<WLF_HILIST_PL>-LFART_TXT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WLF_HILIST_PL-WFDAT, sy-vline,
  WA_WLF_HILIST_PL-BLDAT, sy-vline,
  WA_WLF_HILIST_PL-KUNRE, sy-vline,
  WA_WLF_HILIST_PL-KUNRE_NAME1, sy-vline,
  WA_WLF_HILIST_PL-KUNRG, sy-vline,
  WA_WLF_HILIST_PL-KUNRG_NAME1, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WLF_HILIST_PL 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_HILIST_PL 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_HILIST_PL INTO WA_WLF_HILIST_PL.


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

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

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

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

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

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field LNRZB
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_WLF_HILIST_PL-LNRZB
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WLF_HILIST_PL-LNRZB.
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_WLF_HILIST_PL_STR, 
WBELN TYPE STRING,
WRART TYPE STRING,
WRART_TXT TYPE STRING,
LFART TYPE STRING,
LFART_TXT TYPE STRING,
WFDAT TYPE STRING,
BLDAT TYPE STRING,
KUNRE TYPE STRING,
KUNRE_NAME1 TYPE STRING,
KUNRG TYPE STRING,
KUNRG_NAME1 TYPE STRING,
ZTERMD TYPE STRING,
ZBD1TD TYPE STRING,
ZBD1PD TYPE STRING,
ZBD2TD TYPE STRING,
ZBD2PD TYPE STRING,
ZBD3TD TYPE STRING,
VALDTD TYPE STRING,
VALTGD TYPE STRING,
EKORG TYPE STRING,
EKGRP TYPE STRING,
VKORG TYPE STRING,
VTWEG TYPE STRING,
SPART TYPE STRING,
BUKRS TYPE STRING,
WAERL TYPE STRING,
RFBSK TYPE STRING,
RFBSK_TXT TYPE STRING,
LFTYP TYPE STRING,
LFTYP_TXT TYPE STRING,
XBLNR TYPE STRING,
ZUONR TYPE STRING,
KIDNO TYPE STRING,
ERDAT TYPE STRING,
ERZET TYPE STRING,
ERNAM TYPE STRING,
ARCHIV TYPE STRING,
SELKZ TYPE STRING,
ADRNR_RE TYPE STRING,
ADDR_TYPE_RE TYPE STRING,
ADRNP_RE TYPE STRING,
ADRNR_RS TYPE STRING,
ADRNR_RG TYPE STRING,
ADRNR_AZ TYPE STRING,
POSNR TYPE STRING,
WBELN_LF TYPE STRING,
NETWR TYPE STRING,
MWSBP TYPE STRING,
BRTWR TYPE STRING,
LIFRE TYPE STRING,
LIFRE_NAME1 TYPE STRING,
LNRZB TYPE STRING,
LNRZB_NAME1 TYPE STRING,
NETWR_VZ TYPE STRING,
MWSBP_VZ TYPE STRING,
LFTYP_LI TYPE STRING,
LFTYP_LI_TXT TYPE STRING,
BRTWR_VZ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WLF_HILIST_PL_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_HILIST_PL_STR-WBELN sy-vline 
WA_WLF_HILIST_PL_STR-WRART sy-vline 
WA_WLF_HILIST_PL_STR-WRART_TXT sy-vline 
WA_WLF_HILIST_PL_STR-LFART sy-vline 
WA_WLF_HILIST_PL_STR-LFART_TXT sy-vline 
WA_WLF_HILIST_PL_STR-WFDAT sy-vline 
WA_WLF_HILIST_PL_STR-BLDAT sy-vline 
WA_WLF_HILIST_PL_STR-KUNRE sy-vline 
WA_WLF_HILIST_PL_STR-KUNRE_NAME1 sy-vline 
WA_WLF_HILIST_PL_STR-KUNRG sy-vline 
WA_WLF_HILIST_PL_STR-KUNRG_NAME1 sy-vline 
WA_WLF_HILIST_PL_STR-ZTERMD sy-vline 
WA_WLF_HILIST_PL_STR-ZBD1TD sy-vline 
WA_WLF_HILIST_PL_STR-ZBD1PD sy-vline 
WA_WLF_HILIST_PL_STR-ZBD2TD sy-vline 
WA_WLF_HILIST_PL_STR-ZBD2PD sy-vline 
WA_WLF_HILIST_PL_STR-ZBD3TD sy-vline 
WA_WLF_HILIST_PL_STR-VALDTD sy-vline 
WA_WLF_HILIST_PL_STR-VALTGD sy-vline 
WA_WLF_HILIST_PL_STR-EKORG sy-vline 
WA_WLF_HILIST_PL_STR-EKGRP sy-vline 
WA_WLF_HILIST_PL_STR-VKORG sy-vline 
WA_WLF_HILIST_PL_STR-VTWEG sy-vline 
WA_WLF_HILIST_PL_STR-SPART sy-vline 
WA_WLF_HILIST_PL_STR-BUKRS sy-vline 
WA_WLF_HILIST_PL_STR-WAERL sy-vline 
WA_WLF_HILIST_PL_STR-RFBSK sy-vline 
WA_WLF_HILIST_PL_STR-RFBSK_TXT sy-vline 
WA_WLF_HILIST_PL_STR-LFTYP sy-vline 
WA_WLF_HILIST_PL_STR-LFTYP_TXT sy-vline 
WA_WLF_HILIST_PL_STR-XBLNR sy-vline 
WA_WLF_HILIST_PL_STR-ZUONR sy-vline 
WA_WLF_HILIST_PL_STR-KIDNO sy-vline 
WA_WLF_HILIST_PL_STR-ERDAT sy-vline 
WA_WLF_HILIST_PL_STR-ERZET sy-vline 
WA_WLF_HILIST_PL_STR-ERNAM sy-vline 
WA_WLF_HILIST_PL_STR-ARCHIV sy-vline 
WA_WLF_HILIST_PL_STR-SELKZ sy-vline 
WA_WLF_HILIST_PL_STR-ADRNR_RE sy-vline 
WA_WLF_HILIST_PL_STR-ADDR_TYPE_RE sy-vline 
WA_WLF_HILIST_PL_STR-ADRNP_RE sy-vline 
WA_WLF_HILIST_PL_STR-ADRNR_RS sy-vline 
WA_WLF_HILIST_PL_STR-ADRNR_RG sy-vline 
WA_WLF_HILIST_PL_STR-ADRNR_AZ sy-vline 
WA_WLF_HILIST_PL_STR-POSNR sy-vline 
WA_WLF_HILIST_PL_STR-WBELN_LF sy-vline 
WA_WLF_HILIST_PL_STR-NETWR sy-vline 
WA_WLF_HILIST_PL_STR-MWSBP sy-vline 
WA_WLF_HILIST_PL_STR-BRTWR sy-vline 
WA_WLF_HILIST_PL_STR-LIFRE sy-vline 
WA_WLF_HILIST_PL_STR-LIFRE_NAME1 sy-vline 
WA_WLF_HILIST_PL_STR-LNRZB sy-vline 
WA_WLF_HILIST_PL_STR-LNRZB_NAME1 sy-vline 
WA_WLF_HILIST_PL_STR-NETWR_VZ sy-vline 
WA_WLF_HILIST_PL_STR-MWSBP_VZ sy-vline 
WA_WLF_HILIST_PL_STR-LFTYP_LI sy-vline 
WA_WLF_HILIST_PL_STR-LFTYP_LI_TXT sy-vline 
WA_WLF_HILIST_PL_STR-BRTWR_VZ sy-vline      INTO ld_text SEPARATED BY SPACE.

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