ABAP Select data from SAP table KRIF_OBJ into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM KRIF_OBJ
*  INTO TABLE @DATA(IT_KRIF_OBJ2).
*--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_KRIF_OBJ INDEX 1 INTO DATA(WA_KRIF_OBJ2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<KRIF_OBJ>-MANDT = 1.
<KRIF_OBJ>-CLINT = 1.
<KRIF_OBJ>-ZAEHL = 1.
<KRIF_OBJ>-ATINN = 1.
<KRIF_OBJ>-ADZHL = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_KRIF_OBJ-DATUV, sy-vline,
  WA_KRIF_OBJ-KZLOE, sy-vline,
  WA_KRIF_OBJ-AENNR, sy-vline,
  WA_KRIF_OBJ-ANAME, sy-vline,
  WA_KRIF_OBJ-ADATU, sy-vline,
  WA_KRIF_OBJ-VNAME, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_KRIF_OBJ 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_KRIF_OBJ 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_KRIF_OBJ INTO WA_KRIF_OBJ.


*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 ATINN, internal->external for field ATINN
CALL FUNCTION 'CONVERSION_EXIT_ATINN_OUTPUT'
  EXPORTING
    input =                      WA_KRIF_OBJ-ATINN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KRIF_OBJ-ATINN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field AENNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_KRIF_OBJ-AENNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KRIF_OBJ-AENNR.
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_KRIF_OBJ_STR, 
MANDT TYPE STRING,
CLINT TYPE STRING,
ZAEHL TYPE STRING,
ATINN TYPE STRING,
ADZHL TYPE STRING,
DATUV TYPE STRING,
KZLOE TYPE STRING,
AENNR TYPE STRING,
ANAME TYPE STRING,
ADATU TYPE STRING,
VNAME TYPE STRING,
VDATU TYPE STRING,
DBSTA TYPE STRING,END OF T_EKKO_STR.
DATA: WA_KRIF_OBJ_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_KRIF_OBJ_STR-MANDT sy-vline 
WA_KRIF_OBJ_STR-CLINT sy-vline 
WA_KRIF_OBJ_STR-ZAEHL sy-vline 
WA_KRIF_OBJ_STR-ATINN sy-vline 
WA_KRIF_OBJ_STR-ADZHL sy-vline 
WA_KRIF_OBJ_STR-DATUV sy-vline 
WA_KRIF_OBJ_STR-KZLOE sy-vline 
WA_KRIF_OBJ_STR-AENNR sy-vline 
WA_KRIF_OBJ_STR-ANAME sy-vline 
WA_KRIF_OBJ_STR-ADATU sy-vline 
WA_KRIF_OBJ_STR-VNAME sy-vline 
WA_KRIF_OBJ_STR-VDATU sy-vline 
WA_KRIF_OBJ_STR-DBSTA sy-vline      INTO ld_text SEPARATED BY SPACE.

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