ABAP Select data from SAP table TKKAS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TKKAS
*  INTO TABLE @DATA(IT_TKKAS2).
*--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_TKKAS INDEX 1 INTO DATA(WA_TKKAS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TKKAS>-MANDT = 1.
<TKKAS>-KOKRS = 1.
<TKKAS>-VERSA = 1.
<TKKAS>-ABGSL = 1.
<TKKAS>-STSMA = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TKKAS-ISTAT, sy-vline,
  WA_TKKAS-PRIST, sy-vline,
  WA_TKKAS-NABGR, sy-vline,
  WA_TKKAS-ABART, sy-vline,
  WA_TKKAS-BASIS, sy-vline,
  WA_TKKAS-GEWBS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TKKAS 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_TKKAS 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_TKKAS INTO WA_TKKAS.


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

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

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

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

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

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

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

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field VERSC
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_TKKAS-VERSC
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TKKAS-VERSC.
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_TKKAS_STR, 
MANDT TYPE STRING,
KOKRS TYPE STRING,
VERSA TYPE STRING,
ABGSL TYPE STRING,
STSMA TYPE STRING,
ISTAT TYPE STRING,
PRIST TYPE STRING,
NABGR TYPE STRING,
ABART TYPE STRING,
BASIS TYPE STRING,
GEWBS TYPE STRING,
EBMAX TYPE STRING,
EBBVA TYPE STRING,
OBLIA TYPE STRING,
OBLIB TYPE STRING,
OBLIR TYPE STRING,
VERSP TYPE STRING,
VERSI TYPE STRING,
VERSS TYPE STRING,
AFTLB TYPE STRING,
AFTLR TYPE STRING,
AFTLP TYPE STRING,
GEWKZ TYPE STRING,
VREAL TYPE STRING,
AFTLV TYPE STRING,
ALBST TYPE STRING,
ALRUE TYPE STRING,
ALPRO TYPE STRING,
ALRDV TYPE STRING,
DABSP TYPE STRING,
BWBST TYPE STRING,
EBBEW TYPE STRING,
KDUFR TYPE STRING,
ENDKZ TYPE STRING,
UMVTL TYPE STRING,
EINZL TYPE STRING,
MIBST TYPE STRING,
MIRUE TYPE STRING,
MIPRO TYPE STRING,
MIRDV TYPE STRING,
AFTLK TYPE STRING,
SOLBS TYPE STRING,
RFLG1 TYPE STRING,
RFLG2 TYPE STRING,
RFLG3 TYPE STRING,
RFLG4 TYPE STRING,
RFLG5 TYPE STRING,
RFLG6 TYPE STRING,
GWPRZ TYPE STRING,
ZLNID TYPE STRING,
STRPL TYPE STRING,
MAXPI TYPE STRING,
MXZID TYPE STRING,
RFLG7 TYPE STRING,
RFLG8 TYPE STRING,
RFLG9 TYPE STRING,
ELZID TYPE STRING,
SWBST TYPE STRING,
SWRUE TYPE STRING,
SWPRO TYPE STRING,
SWRDV TYPE STRING,
EMPRZ TYPE STRING,
EMPKZ TYPE STRING,
BWVAR TYPE STRING,
RFLG10 TYPE STRING,
RFLG11 TYPE STRING,
RFLG12 TYPE STRING,
RFLG13 TYPE STRING,
RFLG14 TYPE STRING,
RFLG15 TYPE STRING,
PROFNR TYPE STRING,
MENGE TYPE STRING,
VERSC TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TKKAS_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_TKKAS_STR-MANDT sy-vline 
WA_TKKAS_STR-KOKRS sy-vline 
WA_TKKAS_STR-VERSA sy-vline 
WA_TKKAS_STR-ABGSL sy-vline 
WA_TKKAS_STR-STSMA sy-vline 
WA_TKKAS_STR-ISTAT sy-vline 
WA_TKKAS_STR-PRIST sy-vline 
WA_TKKAS_STR-NABGR sy-vline 
WA_TKKAS_STR-ABART sy-vline 
WA_TKKAS_STR-BASIS sy-vline 
WA_TKKAS_STR-GEWBS sy-vline 
WA_TKKAS_STR-EBMAX sy-vline 
WA_TKKAS_STR-EBBVA sy-vline 
WA_TKKAS_STR-OBLIA sy-vline 
WA_TKKAS_STR-OBLIB sy-vline 
WA_TKKAS_STR-OBLIR sy-vline 
WA_TKKAS_STR-VERSP sy-vline 
WA_TKKAS_STR-VERSI sy-vline 
WA_TKKAS_STR-VERSS sy-vline 
WA_TKKAS_STR-AFTLB sy-vline 
WA_TKKAS_STR-AFTLR sy-vline 
WA_TKKAS_STR-AFTLP sy-vline 
WA_TKKAS_STR-GEWKZ sy-vline 
WA_TKKAS_STR-VREAL sy-vline 
WA_TKKAS_STR-AFTLV sy-vline 
WA_TKKAS_STR-ALBST sy-vline 
WA_TKKAS_STR-ALRUE sy-vline 
WA_TKKAS_STR-ALPRO sy-vline 
WA_TKKAS_STR-ALRDV sy-vline 
WA_TKKAS_STR-DABSP sy-vline 
WA_TKKAS_STR-BWBST sy-vline 
WA_TKKAS_STR-EBBEW sy-vline 
WA_TKKAS_STR-KDUFR sy-vline 
WA_TKKAS_STR-ENDKZ sy-vline 
WA_TKKAS_STR-UMVTL sy-vline 
WA_TKKAS_STR-EINZL sy-vline 
WA_TKKAS_STR-MIBST sy-vline 
WA_TKKAS_STR-MIRUE sy-vline 
WA_TKKAS_STR-MIPRO sy-vline 
WA_TKKAS_STR-MIRDV sy-vline 
WA_TKKAS_STR-AFTLK sy-vline 
WA_TKKAS_STR-SOLBS sy-vline 
WA_TKKAS_STR-RFLG1 sy-vline 
WA_TKKAS_STR-RFLG2 sy-vline 
WA_TKKAS_STR-RFLG3 sy-vline 
WA_TKKAS_STR-RFLG4 sy-vline 
WA_TKKAS_STR-RFLG5 sy-vline 
WA_TKKAS_STR-RFLG6 sy-vline 
WA_TKKAS_STR-GWPRZ sy-vline 
WA_TKKAS_STR-ZLNID sy-vline 
WA_TKKAS_STR-STRPL sy-vline 
WA_TKKAS_STR-MAXPI sy-vline 
WA_TKKAS_STR-MXZID sy-vline 
WA_TKKAS_STR-RFLG7 sy-vline 
WA_TKKAS_STR-RFLG8 sy-vline 
WA_TKKAS_STR-RFLG9 sy-vline 
WA_TKKAS_STR-ELZID sy-vline 
WA_TKKAS_STR-SWBST sy-vline 
WA_TKKAS_STR-SWRUE sy-vline 
WA_TKKAS_STR-SWPRO sy-vline 
WA_TKKAS_STR-SWRDV sy-vline 
WA_TKKAS_STR-EMPRZ sy-vline 
WA_TKKAS_STR-EMPKZ sy-vline 
WA_TKKAS_STR-BWVAR sy-vline 
WA_TKKAS_STR-RFLG10 sy-vline 
WA_TKKAS_STR-RFLG11 sy-vline 
WA_TKKAS_STR-RFLG12 sy-vline 
WA_TKKAS_STR-RFLG13 sy-vline 
WA_TKKAS_STR-RFLG14 sy-vline 
WA_TKKAS_STR-RFLG15 sy-vline 
WA_TKKAS_STR-PROFNR sy-vline 
WA_TKKAS_STR-MENGE sy-vline 
WA_TKKAS_STR-VERSC sy-vline      INTO ld_text SEPARATED BY SPACE.

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