ABAP Select data from SAP table KAEP_BDG into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM KAEP_BDG
*  INTO TABLE @DATA(IT_KAEP_BDG2).
*--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_KAEP_BDG INDEX 1 INTO DATA(WA_KAEP_BDG2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<KAEP_BDG>-MANDT = 1.
<KAEP_BDG>-KOKRS = 1.
<KAEP_BDG>-BELNR = 1.
<KAEP_BDG>-VORGA = 1.
<KAEP_BDG>-CPUDT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_KAEP_BDG-USNAM, sy-vline,
  WA_KAEP_BDG-BLDAT, sy-vline,
  WA_KAEP_BDG-SGTEXT, sy-vline,
  WA_KAEP_BDG-FOBEL, sy-vline,
  WA_KAEP_BDG-VERANT, sy-vline,
  WA_KAEP_BDG-SVERSN, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_KAEP_BDG 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_KAEP_BDG 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_KAEP_BDG INTO WA_KAEP_BDG.


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

*Conversion exit AC152, internal->external for field WTJHR
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_KAEP_BDG-WTJHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KAEP_BDG-WTJHR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field WLJHR
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_KAEP_BDG-WLJHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KAEP_BDG-WLJHR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit NUMCV, internal->external for field LEDNR
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_KAEP_BDG-LEDNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KAEP_BDG-LEDNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit OBART, internal->external for field OBART
CALL FUNCTION 'CONVERSION_EXIT_OBART_OUTPUT'
  EXPORTING
    input =                      WA_KAEP_BDG-OBART
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KAEP_BDG-OBART.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit ABPSN, internal->external for field POSID
CALL FUNCTION 'CONVERSION_EXIT_ABPSN_OUTPUT'
  EXPORTING
    input =                      WA_KAEP_BDG-POSID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KAEP_BDG-POSID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ABPSN, internal->external for field PSPID
CALL FUNCTION 'CONVERSION_EXIT_ABPSN_OUTPUT'
  EXPORTING
    input =                      WA_KAEP_BDG-PSPID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KAEP_BDG-PSPID.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit GJAHR, internal->external for field GJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_KAEP_BDG-GJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KAEP_BDG-GJAHR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field WRJHR
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_KAEP_BDG-WRJHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KAEP_BDG-WRJHR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field GRWERT
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_KAEP_BDG-GRWERT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KAEP_BDG-GRWERT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field JRWERT
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_KAEP_BDG-JRWERT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KAEP_BDG-JRWERT.
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_KAEP_BDG_STR, 
MANDT TYPE STRING,
KOKRS TYPE STRING,
BELNR TYPE STRING,
VORGA TYPE STRING,
CPUDT TYPE STRING,
USNAM TYPE STRING,
BLDAT TYPE STRING,
SGTEXT TYPE STRING,
FOBEL TYPE STRING,
VERANT TYPE STRING,
SVERSN TYPE STRING,
BUZEI TYPE STRING,
WTJHR TYPE STRING,
WLJHR TYPE STRING,
LEDNR TYPE STRING,
OBJNR TYPE STRING,
OBJID TYPE STRING,
OBJ_TXT TYPE STRING,
OBART TYPE STRING,
OBJART_TXT TYPE STRING,
KOSTL TYPE STRING,
AUFNR TYPE STRING,
POSID TYPE STRING,
PSPID TYPE STRING,
POSIT TYPE STRING,
VERSN TYPE STRING,
TRGKZ TYPE STRING,
WRTTP TYPE STRING,
GJAHR TYPE STRING,
FLGJG TYPE STRING,
GEBER TYPE STRING,
WAERS TYPE STRING,
TWAER TYPE STRING,
PLDAT TYPE STRING,
KURST TYPE STRING,
RWAER TYPE STRING,
WRJHR TYPE STRING,
GRWERT TYPE STRING,
JRWERT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_KAEP_BDG_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_KAEP_BDG_STR-MANDT sy-vline 
WA_KAEP_BDG_STR-KOKRS sy-vline 
WA_KAEP_BDG_STR-BELNR sy-vline 
WA_KAEP_BDG_STR-VORGA sy-vline 
WA_KAEP_BDG_STR-CPUDT sy-vline 
WA_KAEP_BDG_STR-USNAM sy-vline 
WA_KAEP_BDG_STR-BLDAT sy-vline 
WA_KAEP_BDG_STR-SGTEXT sy-vline 
WA_KAEP_BDG_STR-FOBEL sy-vline 
WA_KAEP_BDG_STR-VERANT sy-vline 
WA_KAEP_BDG_STR-SVERSN sy-vline 
WA_KAEP_BDG_STR-BUZEI sy-vline 
WA_KAEP_BDG_STR-WTJHR sy-vline 
WA_KAEP_BDG_STR-WLJHR sy-vline 
WA_KAEP_BDG_STR-LEDNR sy-vline 
WA_KAEP_BDG_STR-OBJNR sy-vline 
WA_KAEP_BDG_STR-OBJID sy-vline 
WA_KAEP_BDG_STR-OBJ_TXT sy-vline 
WA_KAEP_BDG_STR-OBART sy-vline 
WA_KAEP_BDG_STR-OBJART_TXT sy-vline 
WA_KAEP_BDG_STR-KOSTL sy-vline 
WA_KAEP_BDG_STR-AUFNR sy-vline 
WA_KAEP_BDG_STR-POSID sy-vline 
WA_KAEP_BDG_STR-PSPID sy-vline 
WA_KAEP_BDG_STR-POSIT sy-vline 
WA_KAEP_BDG_STR-VERSN sy-vline 
WA_KAEP_BDG_STR-TRGKZ sy-vline 
WA_KAEP_BDG_STR-WRTTP sy-vline 
WA_KAEP_BDG_STR-GJAHR sy-vline 
WA_KAEP_BDG_STR-FLGJG sy-vline 
WA_KAEP_BDG_STR-GEBER sy-vline 
WA_KAEP_BDG_STR-WAERS sy-vline 
WA_KAEP_BDG_STR-TWAER sy-vline 
WA_KAEP_BDG_STR-PLDAT sy-vline 
WA_KAEP_BDG_STR-KURST sy-vline 
WA_KAEP_BDG_STR-RWAER sy-vline 
WA_KAEP_BDG_STR-WRJHR sy-vline 
WA_KAEP_BDG_STR-GRWERT sy-vline 
WA_KAEP_BDG_STR-JRWERT sy-vline      INTO ld_text SEPARATED BY SPACE.

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