ABAP Select data from SAP table T5KR4 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP T5KR4 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 T5KR4. 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 T5KR4 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_T5KR4 TYPE STANDARD TABLE OF T5KR4,
      WA_T5KR4 TYPE T5KR4,
      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: <T5KR4> TYPE T5KR4.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_T5KR4.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM T5KR4
  INTO TABLE IT_T5KR4.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM T5KR4
*  INTO TABLE @DATA(IT_T5KR42).
*--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_T5KR4 INDEX 1 INTO DATA(WA_T5KR42).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_T5KR4 ASSIGNING <T5KR4>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<T5KR4>-MANDT = 1.
<T5KR4>-PERSONID_EXT = 1.
<T5KR4>-LSTDT = 1.
<T5KR4>-RUNID = 1.
<T5KR4>-BUSNM = 1.

ENDLOOP.

LOOP AT IT_T5KR4 INTO WA_T5KR4.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_T5KR4-SEQNO, sy-vline,
  WA_T5KR4-ACTUAL, sy-vline,
  WA_T5KR4-FSTDT, sy-vline,
  WA_T5KR4-RUNDT, sy-vline,
  WA_T5KR4-ROEDT, sy-vline,
  WA_T5KR4-ROESN, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_T5KR4 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_T5KR4 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_T5KR4 INTO WA_T5KR4.


*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 PIDEX, internal->external for field PERSONID_EXT
CALL FUNCTION 'CONVERSION_EXIT_PIDEX_OUTPUT'
  EXPORTING
    input =                      WA_T5KR4-PERSONID_EXT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T5KR4-PERSONID_EXT.
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_T5KR4_STR, 
MANDT TYPE STRING,
PERSONID_EXT TYPE STRING,
LSTDT TYPE STRING,
RUNID TYPE STRING,
BUSNM TYPE STRING,
SEQNO TYPE STRING,
ACTUAL TYPE STRING,
FSTDT TYPE STRING,
RUNDT TYPE STRING,
ROEDT TYPE STRING,
ROESN TYPE STRING,
ORGSN TYPE STRING,
STATUS TYPE STRING,
CREATOR TYPE STRING,
CREADATE TYPE STRING,
CREATIME TYPE STRING,
DATE_KEY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_T5KR4_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_T5KR4_STR-MANDT sy-vline 
WA_T5KR4_STR-PERSONID_EXT sy-vline 
WA_T5KR4_STR-LSTDT sy-vline 
WA_T5KR4_STR-RUNID sy-vline 
WA_T5KR4_STR-BUSNM sy-vline 
WA_T5KR4_STR-SEQNO sy-vline 
WA_T5KR4_STR-ACTUAL sy-vline 
WA_T5KR4_STR-FSTDT sy-vline 
WA_T5KR4_STR-RUNDT sy-vline 
WA_T5KR4_STR-ROEDT sy-vline 
WA_T5KR4_STR-ROESN sy-vline 
WA_T5KR4_STR-ORGSN sy-vline 
WA_T5KR4_STR-STATUS sy-vline 
WA_T5KR4_STR-CREATOR sy-vline 
WA_T5KR4_STR-CREADATE sy-vline 
WA_T5KR4_STR-CREATIME sy-vline 
WA_T5KR4_STR-DATE_KEY sy-vline      INTO ld_text SEPARATED BY SPACE.

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