ABAP Select data from SAP table INV_DFKKTHP_AGG into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM INV_DFKKTHP_AGG
*  INTO TABLE @DATA(IT_INV_DFKKTHP_AGG2).
*--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_INV_DFKKTHP_AGG INDEX 1 INTO DATA(WA_INV_DFKKTHP_AGG2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<INV_DFKKTHP_AGG>-SENID = 1.
<INV_DFKKTHP_AGG>-RECID = 1.
<INV_DFKKTHP_AGG>-BETRW = 1.
<INV_DFKKTHP_AGG>-BUKRS = 1.
<INV_DFKKTHP_AGG>-WAERS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_INV_DFKKTHP_AGG-THPDT, sy-vline,
  WA_INV_DFKKTHP_AGG-GROUPVAL, sy-vline,
  WA_INV_DFKKTHP_AGG-GROUPNOT, sy-vline,
  WA_INV_DFKKTHP_AGG-INVCAT, sy-vline,
  WA_INV_DFKKTHP_AGG-THBLN_TYPE, sy-vline,
  WA_INV_DFKKTHP_AGG-POST_CA, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_INV_DFKKTHP_AGG 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_INV_DFKKTHP_AGG 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_INV_DFKKTHP_AGG INTO WA_INV_DFKKTHP_AGG.


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

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

*Conversion exit GJAHR, internal->external for field GJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_INV_DFKKTHP_AGG-GJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_INV_DFKKTHP_AGG-GJAHR.
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_INV_DFKKTHP_AGG_STR, 
SENID TYPE STRING,
RECID TYPE STRING,
BETRW TYPE STRING,
BUKRS TYPE STRING,
WAERS TYPE STRING,
THPDT TYPE STRING,
GROUPVAL TYPE STRING,
GROUPNOT TYPE STRING,
INVCAT TYPE STRING,
THBLN_TYPE TYPE STRING,
POST_CA TYPE STRING,
POSTINGDOC TYPE STRING,
BUKAG TYPE STRING,
GJAHR TYPE STRING,
REF_AGGR_NO TYPE STRING,
NUM_AGGR_ROW TYPE STRING,END OF T_EKKO_STR.
DATA: WA_INV_DFKKTHP_AGG_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_INV_DFKKTHP_AGG_STR-SENID sy-vline 
WA_INV_DFKKTHP_AGG_STR-RECID sy-vline 
WA_INV_DFKKTHP_AGG_STR-BETRW sy-vline 
WA_INV_DFKKTHP_AGG_STR-BUKRS sy-vline 
WA_INV_DFKKTHP_AGG_STR-WAERS sy-vline 
WA_INV_DFKKTHP_AGG_STR-THPDT sy-vline 
WA_INV_DFKKTHP_AGG_STR-GROUPVAL sy-vline 
WA_INV_DFKKTHP_AGG_STR-GROUPNOT sy-vline 
WA_INV_DFKKTHP_AGG_STR-INVCAT sy-vline 
WA_INV_DFKKTHP_AGG_STR-THBLN_TYPE sy-vline 
WA_INV_DFKKTHP_AGG_STR-POST_CA sy-vline 
WA_INV_DFKKTHP_AGG_STR-POSTINGDOC sy-vline 
WA_INV_DFKKTHP_AGG_STR-BUKAG sy-vline 
WA_INV_DFKKTHP_AGG_STR-GJAHR sy-vline 
WA_INV_DFKKTHP_AGG_STR-REF_AGGR_NO sy-vline 
WA_INV_DFKKTHP_AGG_STR-NUM_AGGR_ROW sy-vline      INTO ld_text SEPARATED BY SPACE.

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