ABAP Select data from SAP table TFK001B into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP TFK001B 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 TFK001B. 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 TFK001B 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_TFK001B TYPE STANDARD TABLE OF TFK001B,
      WA_TFK001B TYPE TFK001B,
      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: <TFK001B> TYPE TFK001B.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_TFK001B.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM TFK001B
  INTO TABLE IT_TFK001B.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TFK001B
*  INTO TABLE @DATA(IT_TFK001B2).
*--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_TFK001B INDEX 1 INTO DATA(WA_TFK001B2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_TFK001B ASSIGNING <TFK001B>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TFK001B>-MANDT = 1.
<TFK001B>-BUKRS = 1.
<TFK001B>-OPBUK = 1.
<TFK001B>-XAKOZ = 1.
<TFK001B>-XFAER = 1.

ENDLOOP.

LOOP AT IT_TFK001B INTO WA_TFK001B.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TFK001B-PCTOP, sy-vline,
  WA_TFK001B-TXAAR, sy-vline,
  WA_TFK001B-ABSCH, sy-vline,
  WA_TFK001B-XAWML, sy-vline,
  WA_TFK001B-XAKAN, sy-vline,
  WA_TFK001B-XSTZA, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TFK001B 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_TFK001B 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_TFK001B INTO WA_TFK001B.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_TFK001B_STR, 
MANDT TYPE STRING,
BUKRS TYPE STRING,
OPBUK TYPE STRING,
XAKOZ TYPE STRING,
XFAER TYPE STRING,
PCTOP TYPE STRING,
TXAAR TYPE STRING,
ABSCH TYPE STRING,
XAWML TYPE STRING,
XAKAN TYPE STRING,
XSTZA TYPE STRING,
XNORA TYPE STRING,
XESCH TYPE STRING,
XDISM TYPE STRING,
BWPLV TYPE STRING,
GRPLVL TYPE STRING,
XCFAN TYPE STRING,
SEGFD TYPE STRING,
RVATD TYPE STRING,
XTFUL TYPE STRING,
XWTAC TYPE STRING,
XQLND TYPE STRING,
XCRAN TYPE STRING,
PRLPO TYPE STRING,
XBRACTIV TYPE STRING,
XDPTX TYPE STRING,
XPDCA TYPE STRING,
XTAXX TYPE STRING,
XASKZ TYPE STRING,
XFLOC TYPE STRING,
XRTPA TYPE STRING,
XCOLI TYPE STRING,
XFCTA TYPE STRING,
XEXOT TYPE STRING,
XUTDD TYPE STRING,
XCTRD TYPE STRING,
XFVAD TYPE STRING,
XSEGO TYPE STRING,
XMLPA TYPE STRING,
XCASA TYPE STRING,
DPRUN TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TFK001B_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_TFK001B_STR-MANDT sy-vline 
WA_TFK001B_STR-BUKRS sy-vline 
WA_TFK001B_STR-OPBUK sy-vline 
WA_TFK001B_STR-XAKOZ sy-vline 
WA_TFK001B_STR-XFAER sy-vline 
WA_TFK001B_STR-PCTOP sy-vline 
WA_TFK001B_STR-TXAAR sy-vline 
WA_TFK001B_STR-ABSCH sy-vline 
WA_TFK001B_STR-XAWML sy-vline 
WA_TFK001B_STR-XAKAN sy-vline 
WA_TFK001B_STR-XSTZA sy-vline 
WA_TFK001B_STR-XNORA sy-vline 
WA_TFK001B_STR-XESCH sy-vline 
WA_TFK001B_STR-XDISM sy-vline 
WA_TFK001B_STR-BWPLV sy-vline 
WA_TFK001B_STR-GRPLVL sy-vline 
WA_TFK001B_STR-XCFAN sy-vline 
WA_TFK001B_STR-SEGFD sy-vline 
WA_TFK001B_STR-RVATD sy-vline 
WA_TFK001B_STR-XTFUL sy-vline 
WA_TFK001B_STR-XWTAC sy-vline 
WA_TFK001B_STR-XQLND sy-vline 
WA_TFK001B_STR-XCRAN sy-vline 
WA_TFK001B_STR-PRLPO sy-vline 
WA_TFK001B_STR-XBRACTIV sy-vline 
WA_TFK001B_STR-XDPTX sy-vline 
WA_TFK001B_STR-XPDCA sy-vline 
WA_TFK001B_STR-XTAXX sy-vline 
WA_TFK001B_STR-XASKZ sy-vline 
WA_TFK001B_STR-XFLOC sy-vline 
WA_TFK001B_STR-XRTPA sy-vline 
WA_TFK001B_STR-XCOLI sy-vline 
WA_TFK001B_STR-XFCTA sy-vline 
WA_TFK001B_STR-XEXOT sy-vline 
WA_TFK001B_STR-XUTDD sy-vline 
WA_TFK001B_STR-XCTRD sy-vline 
WA_TFK001B_STR-XFVAD sy-vline 
WA_TFK001B_STR-XSEGO sy-vline 
WA_TFK001B_STR-XMLPA sy-vline 
WA_TFK001B_STR-XCASA sy-vline 
WA_TFK001B_STR-DPRUN sy-vline      INTO ld_text SEPARATED BY SPACE.

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