ABAP Select data from SAP table TKKV033C_CUST into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP TKKV033C_CUST 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 TKKV033C_CUST. 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 TKKV033C_CUST 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_TKKV033C_CUST TYPE STANDARD TABLE OF TKKV033C_CUST,
      WA_TKKV033C_CUST TYPE TKKV033C_CUST,
      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: <TKKV033C_CUST> TYPE TKKV033C_CUST.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_TKKV033C_CUST.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM TKKV033C_CUST
  INTO TABLE IT_TKKV033C_CUST.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TKKV033C_CUST
*  INTO TABLE @DATA(IT_TKKV033C_CUST2).
*--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_TKKV033C_CUST INDEX 1 INTO DATA(WA_TKKV033C_CUST2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_TKKV033C_CUST ASSIGNING <TKKV033C_CUST>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TKKV033C_CUST>-APPLK = 1.
<TKKV033C_CUST>-BUBER = 1.
<TKKV033C_CUST>-KTAB1 = 1.
<TKKV033C_CUST>-KFLD1 = 1.
<TKKV033C_CUST>-KTAB2 = 1.

ENDLOOP.

LOOP AT IT_TKKV033C_CUST INTO WA_TKKV033C_CUST.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TKKV033C_CUST-KFLD2, sy-vline,
  WA_TKKV033C_CUST-KTAB3, sy-vline,
  WA_TKKV033C_CUST-KFLD3, sy-vline,
  WA_TKKV033C_CUST-KTAB4, sy-vline,
  WA_TKKV033C_CUST-KFLD4, sy-vline,
  WA_TKKV033C_CUST-KTAB5, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TKKV033C_CUST 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_TKKV033C_CUST 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_TKKV033C_CUST INTO WA_TKKV033C_CUST.


*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_TKKV033C_CUST_STR, 
APPLK TYPE STRING,
BUBER TYPE STRING,
KTAB1 TYPE STRING,
KFLD1 TYPE STRING,
KTAB2 TYPE STRING,
KFLD2 TYPE STRING,
KTAB3 TYPE STRING,
KFLD3 TYPE STRING,
KTAB4 TYPE STRING,
KFLD4 TYPE STRING,
KTAB5 TYPE STRING,
KFLD5 TYPE STRING,
FTAB1 TYPE STRING,
FFLD1 TYPE STRING,
FTAB2 TYPE STRING,
FFLD2 TYPE STRING,
FTAB3 TYPE STRING,
FFLD3 TYPE STRING,
FTAB4 TYPE STRING,
FFLD4 TYPE STRING,
FTAB5 TYPE STRING,
FFLD5 TYPE STRING,
FTAB6 TYPE STRING,
FFLD6 TYPE STRING,
OKEY1 TYPE STRING,
OKEY2 TYPE STRING,
OKEY3 TYPE STRING,
OKEY4 TYPE STRING,
OKEY5 TYPE STRING,
MITKT TYPE STRING,
OFLD1 TYPE STRING,
OFLD2 TYPE STRING,
OFLD3 TYPE STRING,
OFLD4 TYPE STRING,
OFLD5 TYPE STRING,
OFLD6 TYPE STRING,
KTAB6 TYPE STRING,
KFLD6 TYPE STRING,
KTAB7 TYPE STRING,
KFLD7 TYPE STRING,
KTAB8 TYPE STRING,
KFLD8 TYPE STRING,
OKEY6 TYPE STRING,
OKEY7 TYPE STRING,
OKEY8 TYPE STRING,
KF1B6 TYPE STRING,
KF1B7 TYPE STRING,
KF1B8 TYPE STRING,
KCHB6 TYPE STRING,
KCHB7 TYPE STRING,
KCHB8 TYPE STRING,
KCHS6 TYPE STRING,
KCHS7 TYPE STRING,
KCHS8 TYPE STRING,
KCHT6 TYPE STRING,
KCHT7 TYPE STRING,
KCHT8 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TKKV033C_CUST_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_TKKV033C_CUST_STR-APPLK sy-vline 
WA_TKKV033C_CUST_STR-BUBER sy-vline 
WA_TKKV033C_CUST_STR-KTAB1 sy-vline 
WA_TKKV033C_CUST_STR-KFLD1 sy-vline 
WA_TKKV033C_CUST_STR-KTAB2 sy-vline 
WA_TKKV033C_CUST_STR-KFLD2 sy-vline 
WA_TKKV033C_CUST_STR-KTAB3 sy-vline 
WA_TKKV033C_CUST_STR-KFLD3 sy-vline 
WA_TKKV033C_CUST_STR-KTAB4 sy-vline 
WA_TKKV033C_CUST_STR-KFLD4 sy-vline 
WA_TKKV033C_CUST_STR-KTAB5 sy-vline 
WA_TKKV033C_CUST_STR-KFLD5 sy-vline 
WA_TKKV033C_CUST_STR-FTAB1 sy-vline 
WA_TKKV033C_CUST_STR-FFLD1 sy-vline 
WA_TKKV033C_CUST_STR-FTAB2 sy-vline 
WA_TKKV033C_CUST_STR-FFLD2 sy-vline 
WA_TKKV033C_CUST_STR-FTAB3 sy-vline 
WA_TKKV033C_CUST_STR-FFLD3 sy-vline 
WA_TKKV033C_CUST_STR-FTAB4 sy-vline 
WA_TKKV033C_CUST_STR-FFLD4 sy-vline 
WA_TKKV033C_CUST_STR-FTAB5 sy-vline 
WA_TKKV033C_CUST_STR-FFLD5 sy-vline 
WA_TKKV033C_CUST_STR-FTAB6 sy-vline 
WA_TKKV033C_CUST_STR-FFLD6 sy-vline 
WA_TKKV033C_CUST_STR-OKEY1 sy-vline 
WA_TKKV033C_CUST_STR-OKEY2 sy-vline 
WA_TKKV033C_CUST_STR-OKEY3 sy-vline 
WA_TKKV033C_CUST_STR-OKEY4 sy-vline 
WA_TKKV033C_CUST_STR-OKEY5 sy-vline 
WA_TKKV033C_CUST_STR-MITKT sy-vline 
WA_TKKV033C_CUST_STR-OFLD1 sy-vline 
WA_TKKV033C_CUST_STR-OFLD2 sy-vline 
WA_TKKV033C_CUST_STR-OFLD3 sy-vline 
WA_TKKV033C_CUST_STR-OFLD4 sy-vline 
WA_TKKV033C_CUST_STR-OFLD5 sy-vline 
WA_TKKV033C_CUST_STR-OFLD6 sy-vline 
WA_TKKV033C_CUST_STR-KTAB6 sy-vline 
WA_TKKV033C_CUST_STR-KFLD6 sy-vline 
WA_TKKV033C_CUST_STR-KTAB7 sy-vline 
WA_TKKV033C_CUST_STR-KFLD7 sy-vline 
WA_TKKV033C_CUST_STR-KTAB8 sy-vline 
WA_TKKV033C_CUST_STR-KFLD8 sy-vline 
WA_TKKV033C_CUST_STR-OKEY6 sy-vline 
WA_TKKV033C_CUST_STR-OKEY7 sy-vline 
WA_TKKV033C_CUST_STR-OKEY8 sy-vline 
WA_TKKV033C_CUST_STR-KF1B6 sy-vline 
WA_TKKV033C_CUST_STR-KF1B7 sy-vline 
WA_TKKV033C_CUST_STR-KF1B8 sy-vline 
WA_TKKV033C_CUST_STR-KCHB6 sy-vline 
WA_TKKV033C_CUST_STR-KCHB7 sy-vline 
WA_TKKV033C_CUST_STR-KCHB8 sy-vline 
WA_TKKV033C_CUST_STR-KCHS6 sy-vline 
WA_TKKV033C_CUST_STR-KCHS7 sy-vline 
WA_TKKV033C_CUST_STR-KCHS8 sy-vline 
WA_TKKV033C_CUST_STR-KCHT6 sy-vline 
WA_TKKV033C_CUST_STR-KCHT7 sy-vline 
WA_TKKV033C_CUST_STR-KCHT8 sy-vline      INTO ld_text SEPARATED BY SPACE.

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