ABAP Select data from SAP table DBWBHK_HEADER into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DBWBHK_HEADER
*  INTO TABLE @DATA(IT_DBWBHK_HEADER2).
*--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_DBWBHK_HEADER INDEX 1 INTO DATA(WA_DBWBHK_HEADER2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<DBWBHK_HEADER>-MANDT = 1.
<DBWBHK_HEADER>-TKONN = 1.
<DBWBHK_HEADER>-KUNNR = 1.
<DBWBHK_HEADER>-VKORG = 1.
<DBWBHK_HEADER>-VTWEG = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_DBWBHK_HEADER-SPART, sy-vline,
  WA_DBWBHK_HEADER-TCTYP, sy-vline,
  WA_DBWBHK_HEADER-BTBSTA, sy-vline,
  WA_DBWBHK_HEADER-ERNAM, sy-vline,
  WA_DBWBHK_HEADER-ERDAT, sy-vline,
  WA_DBWBHK_HEADER-TKSACHB, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_DBWBHK_HEADER 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_DBWBHK_HEADER 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_DBWBHK_HEADER INTO WA_DBWBHK_HEADER.


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

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

*Conversion exit ALPHA, internal->external for field ELIFN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_DBWBHK_HEADER-ELIFN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DBWBHK_HEADER-ELIFN.
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_DBWBHK_HEADER_STR, 
MANDT TYPE STRING,
TKONN TYPE STRING,
KUNNR TYPE STRING,
VKORG TYPE STRING,
VTWEG TYPE STRING,
SPART TYPE STRING,
TCTYP TYPE STRING,
BTBSTA TYPE STRING,
ERNAM TYPE STRING,
ERDAT TYPE STRING,
TKSACHB TYPE STRING,
BSTNK TYPE STRING,
SDWRS TYPE STRING,
BUDAT TYPE STRING,
AUGRU TYPE STRING,
AUDAT TYPE STRING,
SUBMI_SD TYPE STRING,
LIFSK_SD TYPE STRING,
FAKSK_SD TYPE STRING,
NETWR_SD TYPE STRING,
VKGRP TYPE STRING,
VKBUR TYPE STRING,
VSBED_SD TYPE STRING,
ELIFN TYPE STRING,
EKORG TYPE STRING,
EKGRP TYPE STRING,
IHREZ TYPE STRING,
EBDAT TYPE STRING,
EINDT TYPE STRING,
WAERS_PURCH TYPE STRING,
ZTERM TYPE STRING,
VALDT TYPE STRING,
WERK_MM TYPE STRING,
ZTERM_SALES TYPE STRING,
VALDTD TYPE STRING,
ZLSCH TYPE STRING,
COMPLETE TYPE STRING,
QUAN_COMPLETE TYPE STRING,
TKWAERS TYPE STRING,
TKONN_EX TYPE STRING,
TC_RELEASED TYPE STRING,
CONSOL_IT_EXIST TYPE STRING,
RESWK TYPE STRING,
CREATED_FROM TYPE STRING,
TCCAT TYPE STRING,
USE_CASE TYPE STRING,
PURPOSE TYPE STRING,
COMPANY_CODE TYPE STRING,
CONSOL_EMCSI TYPE STRING,
CONSOL_SLCSI TYPE STRING,
CONSOL_LCCSI TYPE STRING,
CONSOL_EMCSO TYPE STRING,
CONSOL_SLCSO TYPE STRING,
CONSOL_LCCSO TYPE STRING,END OF T_EKKO_STR.
DATA: WA_DBWBHK_HEADER_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_DBWBHK_HEADER_STR-MANDT sy-vline 
WA_DBWBHK_HEADER_STR-TKONN sy-vline 
WA_DBWBHK_HEADER_STR-KUNNR sy-vline 
WA_DBWBHK_HEADER_STR-VKORG sy-vline 
WA_DBWBHK_HEADER_STR-VTWEG sy-vline 
WA_DBWBHK_HEADER_STR-SPART sy-vline 
WA_DBWBHK_HEADER_STR-TCTYP sy-vline 
WA_DBWBHK_HEADER_STR-BTBSTA sy-vline 
WA_DBWBHK_HEADER_STR-ERNAM sy-vline 
WA_DBWBHK_HEADER_STR-ERDAT sy-vline 
WA_DBWBHK_HEADER_STR-TKSACHB sy-vline 
WA_DBWBHK_HEADER_STR-BSTNK sy-vline 
WA_DBWBHK_HEADER_STR-SDWRS sy-vline 
WA_DBWBHK_HEADER_STR-BUDAT sy-vline 
WA_DBWBHK_HEADER_STR-AUGRU sy-vline 
WA_DBWBHK_HEADER_STR-AUDAT sy-vline 
WA_DBWBHK_HEADER_STR-SUBMI_SD sy-vline 
WA_DBWBHK_HEADER_STR-LIFSK_SD sy-vline 
WA_DBWBHK_HEADER_STR-FAKSK_SD sy-vline 
WA_DBWBHK_HEADER_STR-NETWR_SD sy-vline 
WA_DBWBHK_HEADER_STR-VKGRP sy-vline 
WA_DBWBHK_HEADER_STR-VKBUR sy-vline 
WA_DBWBHK_HEADER_STR-VSBED_SD sy-vline 
WA_DBWBHK_HEADER_STR-ELIFN sy-vline 
WA_DBWBHK_HEADER_STR-EKORG sy-vline 
WA_DBWBHK_HEADER_STR-EKGRP sy-vline 
WA_DBWBHK_HEADER_STR-IHREZ sy-vline 
WA_DBWBHK_HEADER_STR-EBDAT sy-vline 
WA_DBWBHK_HEADER_STR-EINDT sy-vline 
WA_DBWBHK_HEADER_STR-WAERS_PURCH sy-vline 
WA_DBWBHK_HEADER_STR-ZTERM sy-vline 
WA_DBWBHK_HEADER_STR-VALDT sy-vline 
WA_DBWBHK_HEADER_STR-WERK_MM sy-vline 
WA_DBWBHK_HEADER_STR-ZTERM_SALES sy-vline 
WA_DBWBHK_HEADER_STR-VALDTD sy-vline 
WA_DBWBHK_HEADER_STR-ZLSCH sy-vline 
WA_DBWBHK_HEADER_STR-COMPLETE sy-vline 
WA_DBWBHK_HEADER_STR-QUAN_COMPLETE sy-vline 
WA_DBWBHK_HEADER_STR-TKWAERS sy-vline 
WA_DBWBHK_HEADER_STR-TKONN_EX sy-vline 
WA_DBWBHK_HEADER_STR-TC_RELEASED sy-vline 
WA_DBWBHK_HEADER_STR-CONSOL_IT_EXIST sy-vline 
WA_DBWBHK_HEADER_STR-RESWK sy-vline 
WA_DBWBHK_HEADER_STR-CREATED_FROM sy-vline 
WA_DBWBHK_HEADER_STR-TCCAT sy-vline 
WA_DBWBHK_HEADER_STR-USE_CASE sy-vline 
WA_DBWBHK_HEADER_STR-PURPOSE sy-vline 
WA_DBWBHK_HEADER_STR-COMPANY_CODE sy-vline 
WA_DBWBHK_HEADER_STR-CONSOL_EMCSI sy-vline 
WA_DBWBHK_HEADER_STR-CONSOL_SLCSI sy-vline 
WA_DBWBHK_HEADER_STR-CONSOL_LCCSI sy-vline 
WA_DBWBHK_HEADER_STR-CONSOL_EMCSO sy-vline 
WA_DBWBHK_HEADER_STR-CONSOL_SLCSO sy-vline 
WA_DBWBHK_HEADER_STR-CONSOL_LCCSO sy-vline      INTO ld_text SEPARATED BY SPACE.

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