ABAP Select data from SAP table TFC_SMALLBSEG into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TFC_SMALLBSEG
*  INTO TABLE @DATA(IT_TFC_SMALLBSEG2).
*--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_TFC_SMALLBSEG INDEX 1 INTO DATA(WA_TFC_SMALLBSEG2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TFC_SMALLBSEG>-BUKRS = 1.
<TFC_SMALLBSEG>-BELNR = 1.
<TFC_SMALLBSEG>-GJAHR = 1.
<TFC_SMALLBSEG>-BUZEI = 1.
<TFC_SMALLBSEG>-AUGBL = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TFC_SMALLBSEG-KUNNR, sy-vline,
  WA_TFC_SMALLBSEG-LIFNR, sy-vline,
  WA_TFC_SMALLBSEG-HKONT, sy-vline,
  WA_TFC_SMALLBSEG-KOART, sy-vline,
  WA_TFC_SMALLBSEG-PSWSL, sy-vline,
  WA_TFC_SMALLBSEG-XNEGP, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TFC_SMALLBSEG 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_TFC_SMALLBSEG 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_TFC_SMALLBSEG INTO WA_TFC_SMALLBSEG.


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

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

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

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

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

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

*Conversion exit AU132, internal->external for field PSWBT
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_TFC_SMALLBSEG-PSWBT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TFC_SMALLBSEG-PSWBT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field DMBTR
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_TFC_SMALLBSEG-DMBTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TFC_SMALLBSEG-DMBTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field DMBE2
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_TFC_SMALLBSEG-DMBE2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TFC_SMALLBSEG-DMBE2.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field DMBE3
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_TFC_SMALLBSEG-DMBE3
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TFC_SMALLBSEG-DMBE3.
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_TFC_SMALLBSEG_STR, 
BUKRS TYPE STRING,
BELNR TYPE STRING,
GJAHR TYPE STRING,
BUZEI TYPE STRING,
AUGBL TYPE STRING,
KUNNR TYPE STRING,
LIFNR TYPE STRING,
HKONT TYPE STRING,
KOART TYPE STRING,
PSWSL TYPE STRING,
XNEGP TYPE STRING,
SHKZG TYPE STRING,
UMSKS TYPE STRING,
UMSKZ TYPE STRING,
GSBER TYPE STRING,
PSWBT TYPE STRING,
DMBTR TYPE STRING,
XUMSW TYPE STRING,
DMBE2 TYPE STRING,
DMBE3 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TFC_SMALLBSEG_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_TFC_SMALLBSEG_STR-BUKRS sy-vline 
WA_TFC_SMALLBSEG_STR-BELNR sy-vline 
WA_TFC_SMALLBSEG_STR-GJAHR sy-vline 
WA_TFC_SMALLBSEG_STR-BUZEI sy-vline 
WA_TFC_SMALLBSEG_STR-AUGBL sy-vline 
WA_TFC_SMALLBSEG_STR-KUNNR sy-vline 
WA_TFC_SMALLBSEG_STR-LIFNR sy-vline 
WA_TFC_SMALLBSEG_STR-HKONT sy-vline 
WA_TFC_SMALLBSEG_STR-KOART sy-vline 
WA_TFC_SMALLBSEG_STR-PSWSL sy-vline 
WA_TFC_SMALLBSEG_STR-XNEGP sy-vline 
WA_TFC_SMALLBSEG_STR-SHKZG sy-vline 
WA_TFC_SMALLBSEG_STR-UMSKS sy-vline 
WA_TFC_SMALLBSEG_STR-UMSKZ sy-vline 
WA_TFC_SMALLBSEG_STR-GSBER sy-vline 
WA_TFC_SMALLBSEG_STR-PSWBT sy-vline 
WA_TFC_SMALLBSEG_STR-DMBTR sy-vline 
WA_TFC_SMALLBSEG_STR-XUMSW sy-vline 
WA_TFC_SMALLBSEG_STR-DMBE2 sy-vline 
WA_TFC_SMALLBSEG_STR-DMBE3 sy-vline      INTO ld_text SEPARATED BY SPACE.

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