ABAP Select data from SAP table WB2_EXP_WBRK_LIST_DISPLAY into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP WB2_EXP_WBRK_LIST_DISPLAY 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 WB2_EXP_WBRK_LIST_DISPLAY. 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 WB2_EXP_WBRK_LIST_DISPLAY 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_WB2_EXP_WBRK_LIST_DISPLAY TYPE STANDARD TABLE OF WB2_EXP_WBRK_LIST_DISPLAY,
      WA_WB2_EXP_WBRK_LIST_DISPLAY TYPE WB2_EXP_WBRK_LIST_DISPLAY,
      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: <WB2_EXP_WBRK_LIST_DISPLAY> TYPE WB2_EXP_WBRK_LIST_DISPLAY.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_WB2_EXP_WBRK_LIST_DISPLAY.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM WB2_EXP_WBRK_LIST_DISPLAY
  INTO TABLE IT_WB2_EXP_WBRK_LIST_DISPLAY.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WB2_EXP_WBRK_LIST_DISPLAY
*  INTO TABLE @DATA(IT_WB2_EXP_WBRK_LIST_DISPLAY2).
*--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_WB2_EXP_WBRK_LIST_DISPLAY INDEX 1 INTO DATA(WA_WB2_EXP_WBRK_LIST_DISPLAY2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_WB2_EXP_WBRK_LIST_DISPLAY ASSIGNING <WB2_EXP_WBRK_LIST_DISPLAY>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WB2_EXP_WBRK_LIST_DISPLAY>-MANDT = 1.
<WB2_EXP_WBRK_LIST_DISPLAY>-EXP_CLASS = 1.
<WB2_EXP_WBRK_LIST_DISPLAY>-EXP_CLASS_TEXT = 1.
<WB2_EXP_WBRK_LIST_DISPLAY>-ACCOUNT_TYPE = 1.
<WB2_EXP_WBRK_LIST_DISPLAY>-ACCOUNT_TYPE_TEXT = 1.

ENDLOOP.

LOOP AT IT_WB2_EXP_WBRK_LIST_DISPLAY INTO WA_WB2_EXP_WBRK_LIST_DISPLAY.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WB2_EXP_WBRK_LIST_DISPLAY-POST_TYPE, sy-vline,
  WA_WB2_EXP_WBRK_LIST_DISPLAY-POST_TYPE_TEXT, sy-vline,
  WA_WB2_EXP_WBRK_LIST_DISPLAY-WBELN, sy-vline,
  WA_WB2_EXP_WBRK_LIST_DISPLAY-LFART, sy-vline,
  WA_WB2_EXP_WBRK_LIST_DISPLAY-LFTYP, sy-vline,
  WA_WB2_EXP_WBRK_LIST_DISPLAY-LFTYP_TEXT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WB2_EXP_WBRK_LIST_DISPLAY 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_WB2_EXP_WBRK_LIST_DISPLAY 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_WB2_EXP_WBRK_LIST_DISPLAY INTO WA_WB2_EXP_WBRK_LIST_DISPLAY.


*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_WB2_EXP_WBRK_LIST_DISPLAY-WBELN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WB2_EXP_WBRK_LIST_DISPLAY-WBELN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LIFRE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_WB2_EXP_WBRK_LIST_DISPLAY-LIFRE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WB2_EXP_WBRK_LIST_DISPLAY-LIFRE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LNRZB
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_WB2_EXP_WBRK_LIST_DISPLAY-LNRZB
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WB2_EXP_WBRK_LIST_DISPLAY-LNRZB.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KUNRE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_WB2_EXP_WBRK_LIST_DISPLAY-KUNRE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WB2_EXP_WBRK_LIST_DISPLAY-KUNRE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KUNRG
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_WB2_EXP_WBRK_LIST_DISPLAY-KUNRG
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WB2_EXP_WBRK_LIST_DISPLAY-KUNRG.
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_WB2_EXP_WBRK_LIST_DISPLAY_STR, 
MANDT TYPE STRING,
EXP_CLASS TYPE STRING,
EXP_CLASS_TEXT TYPE STRING,
ACCOUNT_TYPE TYPE STRING,
ACCOUNT_TYPE_TEXT TYPE STRING,
POST_TYPE TYPE STRING,
POST_TYPE_TEXT TYPE STRING,
WBELN TYPE STRING,
LFART TYPE STRING,
LFTYP TYPE STRING,
LFTYP_TEXT TYPE STRING,
ABART TYPE STRING,
WFDAT TYPE STRING,
RFBSK TYPE STRING,
LIFRE TYPE STRING,
LIFRE_TEXT TYPE STRING,
LNRZB TYPE STRING,
LNRZB_TEXT TYPE STRING,
KUNRE TYPE STRING,
KUNRE_TEXT TYPE STRING,
KUNRG TYPE STRING,
KUNRG_TEXT TYPE STRING,
EKORG TYPE STRING,
VKORG TYPE STRING,
VTWEG TYPE STRING,
SPART TYPE STRING,
BUKRS TYPE STRING,
ERDAT TYPE STRING,
ERNAM TYPE STRING,
AEDAT TYPE STRING,
BLDAT TYPE STRING,
XBLNR TYPE STRING,
WAERL TYPE STRING,
ZTERM TYPE STRING,
NETWR TYPE STRING,
NETWRD TYPE STRING,
ZTERMD TYPE STRING,
FKSTO TYPE STRING,
EKGRP TYPE STRING,
VALDT TYPE STRING,
MWSBK TYPE STRING,
MWSBKD TYPE STRING,
VALDTD TYPE STRING,
DOC_SETTLED TYPE STRING,
TEW_TYPE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WB2_EXP_WBRK_LIST_DISPLAY_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_WB2_EXP_WBRK_LIST_DISPLAY_STR-MANDT sy-vline 
WA_WB2_EXP_WBRK_LIST_DISPLAY_STR-EXP_CLASS sy-vline 
WA_WB2_EXP_WBRK_LIST_DISPLAY_STR-EXP_CLASS_TEXT sy-vline 
WA_WB2_EXP_WBRK_LIST_DISPLAY_STR-ACCOUNT_TYPE sy-vline 
WA_WB2_EXP_WBRK_LIST_DISPLAY_STR-ACCOUNT_TYPE_TEXT sy-vline 
WA_WB2_EXP_WBRK_LIST_DISPLAY_STR-POST_TYPE sy-vline 
WA_WB2_EXP_WBRK_LIST_DISPLAY_STR-POST_TYPE_TEXT sy-vline 
WA_WB2_EXP_WBRK_LIST_DISPLAY_STR-WBELN sy-vline 
WA_WB2_EXP_WBRK_LIST_DISPLAY_STR-LFART sy-vline 
WA_WB2_EXP_WBRK_LIST_DISPLAY_STR-LFTYP sy-vline 
WA_WB2_EXP_WBRK_LIST_DISPLAY_STR-LFTYP_TEXT sy-vline 
WA_WB2_EXP_WBRK_LIST_DISPLAY_STR-ABART sy-vline 
WA_WB2_EXP_WBRK_LIST_DISPLAY_STR-WFDAT sy-vline 
WA_WB2_EXP_WBRK_LIST_DISPLAY_STR-RFBSK sy-vline 
WA_WB2_EXP_WBRK_LIST_DISPLAY_STR-LIFRE sy-vline 
WA_WB2_EXP_WBRK_LIST_DISPLAY_STR-LIFRE_TEXT sy-vline 
WA_WB2_EXP_WBRK_LIST_DISPLAY_STR-LNRZB sy-vline 
WA_WB2_EXP_WBRK_LIST_DISPLAY_STR-LNRZB_TEXT sy-vline 
WA_WB2_EXP_WBRK_LIST_DISPLAY_STR-KUNRE sy-vline 
WA_WB2_EXP_WBRK_LIST_DISPLAY_STR-KUNRE_TEXT sy-vline 
WA_WB2_EXP_WBRK_LIST_DISPLAY_STR-KUNRG sy-vline 
WA_WB2_EXP_WBRK_LIST_DISPLAY_STR-KUNRG_TEXT sy-vline 
WA_WB2_EXP_WBRK_LIST_DISPLAY_STR-EKORG sy-vline 
WA_WB2_EXP_WBRK_LIST_DISPLAY_STR-VKORG sy-vline 
WA_WB2_EXP_WBRK_LIST_DISPLAY_STR-VTWEG sy-vline 
WA_WB2_EXP_WBRK_LIST_DISPLAY_STR-SPART sy-vline 
WA_WB2_EXP_WBRK_LIST_DISPLAY_STR-BUKRS sy-vline 
WA_WB2_EXP_WBRK_LIST_DISPLAY_STR-ERDAT sy-vline 
WA_WB2_EXP_WBRK_LIST_DISPLAY_STR-ERNAM sy-vline 
WA_WB2_EXP_WBRK_LIST_DISPLAY_STR-AEDAT sy-vline 
WA_WB2_EXP_WBRK_LIST_DISPLAY_STR-BLDAT sy-vline 
WA_WB2_EXP_WBRK_LIST_DISPLAY_STR-XBLNR sy-vline 
WA_WB2_EXP_WBRK_LIST_DISPLAY_STR-WAERL sy-vline 
WA_WB2_EXP_WBRK_LIST_DISPLAY_STR-ZTERM sy-vline 
WA_WB2_EXP_WBRK_LIST_DISPLAY_STR-NETWR sy-vline 
WA_WB2_EXP_WBRK_LIST_DISPLAY_STR-NETWRD sy-vline 
WA_WB2_EXP_WBRK_LIST_DISPLAY_STR-ZTERMD sy-vline 
WA_WB2_EXP_WBRK_LIST_DISPLAY_STR-FKSTO sy-vline 
WA_WB2_EXP_WBRK_LIST_DISPLAY_STR-EKGRP sy-vline 
WA_WB2_EXP_WBRK_LIST_DISPLAY_STR-VALDT sy-vline 
WA_WB2_EXP_WBRK_LIST_DISPLAY_STR-MWSBK sy-vline 
WA_WB2_EXP_WBRK_LIST_DISPLAY_STR-MWSBKD sy-vline 
WA_WB2_EXP_WBRK_LIST_DISPLAY_STR-VALDTD sy-vline 
WA_WB2_EXP_WBRK_LIST_DISPLAY_STR-DOC_SETTLED sy-vline 
WA_WB2_EXP_WBRK_LIST_DISPLAY_STR-TEW_TYPE sy-vline      INTO ld_text SEPARATED BY SPACE.

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