ABAP Select data from SAP table KBS1 into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

Below is a number of ABAP code snippets to demonstrate how to select data from SAP KBS1 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 KBS1. 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 KBS1 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_KBS1 TYPE STANDARD TABLE OF KBS1,
      WA_KBS1 TYPE KBS1,
      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: <KBS1> TYPE KBS1.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_KBS1.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM KBS1
  INTO TABLE IT_KBS1.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM KBS1
*  INTO TABLE @DATA(IT_KBS12).
*--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_KBS1 INDEX 1 INTO DATA(WA_KBS12).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_KBS1 ASSIGNING <KBS1>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<KBS1>-MANDT = 1.
<KBS1>-KOKRS = 1.
<KBS1>-EXTNR = 1.
<KBS1>-OBJID = 1.
<KBS1>-KSTAR = 1.

ENDLOOP.

LOOP AT IT_KBS1 INTO WA_KBS1.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_KBS1-BUKRS, sy-vline,
  WA_KBS1-WERKS, sy-vline,
  WA_KBS1-PRCTR, sy-vline,
  WA_KBS1-ESORT, sy-vline,
  WA_KBS1-ERFNM, sy-vline,
  WA_KBS1-ERFDT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_KBS1 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_KBS1 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_KBS1 INTO WA_KBS1.


*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 EXTNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_KBS1-EXTNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KBS1-EXTNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KSTAR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_KBS1-KSTAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KBS1-KSTAR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PRCTR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_KBS1-PRCTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KBS1-PRCTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field SPRAS
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_KBS1-SPRAS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KBS1-SPRAS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEEHT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_KBS1-MEEHT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KBS1-MEEHT.
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_KBS1_STR, 
MANDT TYPE STRING,
KOKRS TYPE STRING,
EXTNR TYPE STRING,
OBJID TYPE STRING,
KSTAR TYPE STRING,
BUKRS TYPE STRING,
WERKS TYPE STRING,
PRCTR TYPE STRING,
ESORT TYPE STRING,
ERFNM TYPE STRING,
ERFDT TYPE STRING,
AENDT TYPE STRING,
AENNM TYPE STRING,
FRFLG TYPE STRING,
DLFLG TYPE STRING,
SPRAS TYPE STRING,
TXN08 TYPE STRING,
KTEXT TYPE STRING,
LTEXT TYPE STRING,
BTGRP TYPE STRING,
HWGES TYPE STRING,
HWAER TYPE STRING,
LOSGR TYPE STRING,
MEEHT TYPE STRING,
VERSA TYPE STRING,
VERSM TYPE STRING,
PREIS TYPE STRING,
ANRED TYPE STRING,
NAME1 TYPE STRING,
NAME2 TYPE STRING,
NAME3 TYPE STRING,
NAME4 TYPE STRING,
STRAS TYPE STRING,
PFACH TYPE STRING,
PSTL2 TYPE STRING,
LAND1 TYPE STRING,
PSTLZ TYPE STRING,
ORT01 TYPE STRING,
ORT02 TYPE STRING,
REGIO TYPE STRING,
INLND TYPE STRING,
ANZZL TYPE STRING,
WAREN TYPE STRING,
LINE0 TYPE STRING,
LINE1 TYPE STRING,
LINE2 TYPE STRING,
LINE3 TYPE STRING,
LINE4 TYPE STRING,
LINE5 TYPE STRING,
LINE6 TYPE STRING,
LINE7 TYPE STRING,
LINE8 TYPE STRING,
LINE9 TYPE STRING,
LINEK TYPE STRING,
KALNR TYPE STRING,
KLVAR TYPE STRING,
HWGFX TYPE STRING,
KALSM TYPE STRING,
ZSCHL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_KBS1_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_KBS1_STR-MANDT sy-vline 
WA_KBS1_STR-KOKRS sy-vline 
WA_KBS1_STR-EXTNR sy-vline 
WA_KBS1_STR-OBJID sy-vline 
WA_KBS1_STR-KSTAR sy-vline 
WA_KBS1_STR-BUKRS sy-vline 
WA_KBS1_STR-WERKS sy-vline 
WA_KBS1_STR-PRCTR sy-vline 
WA_KBS1_STR-ESORT sy-vline 
WA_KBS1_STR-ERFNM sy-vline 
WA_KBS1_STR-ERFDT sy-vline 
WA_KBS1_STR-AENDT sy-vline 
WA_KBS1_STR-AENNM sy-vline 
WA_KBS1_STR-FRFLG sy-vline 
WA_KBS1_STR-DLFLG sy-vline 
WA_KBS1_STR-SPRAS sy-vline 
WA_KBS1_STR-TXN08 sy-vline 
WA_KBS1_STR-KTEXT sy-vline 
WA_KBS1_STR-LTEXT sy-vline 
WA_KBS1_STR-BTGRP sy-vline 
WA_KBS1_STR-HWGES sy-vline 
WA_KBS1_STR-HWAER sy-vline 
WA_KBS1_STR-LOSGR sy-vline 
WA_KBS1_STR-MEEHT sy-vline 
WA_KBS1_STR-VERSA sy-vline 
WA_KBS1_STR-VERSM sy-vline 
WA_KBS1_STR-PREIS sy-vline 
WA_KBS1_STR-ANRED sy-vline 
WA_KBS1_STR-NAME1 sy-vline 
WA_KBS1_STR-NAME2 sy-vline 
WA_KBS1_STR-NAME3 sy-vline 
WA_KBS1_STR-NAME4 sy-vline 
WA_KBS1_STR-STRAS sy-vline 
WA_KBS1_STR-PFACH sy-vline 
WA_KBS1_STR-PSTL2 sy-vline 
WA_KBS1_STR-LAND1 sy-vline 
WA_KBS1_STR-PSTLZ sy-vline 
WA_KBS1_STR-ORT01 sy-vline 
WA_KBS1_STR-ORT02 sy-vline 
WA_KBS1_STR-REGIO sy-vline 
WA_KBS1_STR-INLND sy-vline 
WA_KBS1_STR-ANZZL sy-vline 
WA_KBS1_STR-WAREN sy-vline 
WA_KBS1_STR-LINE0 sy-vline 
WA_KBS1_STR-LINE1 sy-vline 
WA_KBS1_STR-LINE2 sy-vline 
WA_KBS1_STR-LINE3 sy-vline 
WA_KBS1_STR-LINE4 sy-vline 
WA_KBS1_STR-LINE5 sy-vline 
WA_KBS1_STR-LINE6 sy-vline 
WA_KBS1_STR-LINE7 sy-vline 
WA_KBS1_STR-LINE8 sy-vline 
WA_KBS1_STR-LINE9 sy-vline 
WA_KBS1_STR-LINEK sy-vline 
WA_KBS1_STR-KALNR sy-vline 
WA_KBS1_STR-KLVAR sy-vline 
WA_KBS1_STR-HWGFX sy-vline 
WA_KBS1_STR-KALSM sy-vline 
WA_KBS1_STR-ZSCHL sy-vline      INTO ld_text SEPARATED BY SPACE.

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