ABAP Select data from SAP table P21_KULONADO_FORM into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP P21_KULONADO_FORM 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 P21_KULONADO_FORM. 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 P21_KULONADO_FORM 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_P21_KULONADO_FORM TYPE STANDARD TABLE OF P21_KULONADO_FORM,
      WA_P21_KULONADO_FORM TYPE P21_KULONADO_FORM,
      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: <P21_KULONADO_FORM> TYPE P21_KULONADO_FORM.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_P21_KULONADO_FORM.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM P21_KULONADO_FORM
  INTO TABLE IT_P21_KULONADO_FORM.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM P21_KULONADO_FORM
*  INTO TABLE @DATA(IT_P21_KULONADO_FORM2).
*--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_P21_KULONADO_FORM INDEX 1 INTO DATA(WA_P21_KULONADO_FORM2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_P21_KULONADO_FORM ASSIGNING <P21_KULONADO_FORM>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<P21_KULONADO_FORM>-MANDT = 1.
<P21_KULONADO_FORM>-PERNR = 1.
<P21_KULONADO_FORM>-STRNR = 1.
<P21_KULONADO_FORM>-FUREV = 1.
<P21_KULONADO_FORM>-KAVEZ = 1.

ENDLOOP.

LOOP AT IT_P21_KULONADO_FORM INTO WA_P21_KULONADO_FORM.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_P21_KULONADO_FORM-KA_ALAP, sy-vline,
  WA_P21_KULONADO_FORM-MVMNYPTAGD, sy-vline,
  WA_P21_KULONADO_FORM-MVEUJAR, sy-vline,
  WA_P21_KULONADO_FORM-MVJARULEK, sy-vline,
  WA_P21_KULONADO_FORM-KA_4SZAZ, sy-vline,
  WA_P21_KULONADO_FORM-EGYEBLEVON, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_P21_KULONADO_FORM 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_P21_KULONADO_FORM 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_P21_KULONADO_FORM INTO WA_P21_KULONADO_FORM.


*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 GJAHR, internal->external for field FUREV
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_P21_KULONADO_FORM-FUREV
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_P21_KULONADO_FORM-FUREV.
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_P21_KULONADO_FORM_STR, 
MANDT TYPE STRING,
PERNR TYPE STRING,
STRNR TYPE STRING,
FUREV TYPE STRING,
KAVEZ TYPE STRING,
KA_ALAP TYPE STRING,
MVMNYPTAGD TYPE STRING,
MVEUJAR TYPE STRING,
MVJARULEK TYPE STRING,
KA_4SZAZ TYPE STRING,
EGYEBLEVON TYPE STRING,
KULONADO TYPE STRING,
MEGFIZ_ADO TYPE STRING,
LEVONT_JAR TYPE STRING,
SZJA_2010 TYPE STRING,
SZJA_REGI TYPE STRING,
MNYP_ABEV TYPE STRING,
MVNYJ_ABEV TYPE STRING,
SUM_ABEV TYPE STRING,
WAERS TYPE STRING,
ENAME TYPE STRING,
CIM TYPE STRING,
LAND1 TYPE STRING,
IRSZ TYPE STRING,
HELY TYPE STRING,
KOZN TYPE STRING,
KOZJ TYPE STRING,
HAZSZ TYPE STRING,
EPUL TYPE STRING,
LEPCS TYPE STRING,
EM TYPE STRING,
AJTO TYPE STRING,END OF T_EKKO_STR.
DATA: WA_P21_KULONADO_FORM_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_P21_KULONADO_FORM_STR-MANDT sy-vline 
WA_P21_KULONADO_FORM_STR-PERNR sy-vline 
WA_P21_KULONADO_FORM_STR-STRNR sy-vline 
WA_P21_KULONADO_FORM_STR-FUREV sy-vline 
WA_P21_KULONADO_FORM_STR-KAVEZ sy-vline 
WA_P21_KULONADO_FORM_STR-KA_ALAP sy-vline 
WA_P21_KULONADO_FORM_STR-MVMNYPTAGD sy-vline 
WA_P21_KULONADO_FORM_STR-MVEUJAR sy-vline 
WA_P21_KULONADO_FORM_STR-MVJARULEK sy-vline 
WA_P21_KULONADO_FORM_STR-KA_4SZAZ sy-vline 
WA_P21_KULONADO_FORM_STR-EGYEBLEVON sy-vline 
WA_P21_KULONADO_FORM_STR-KULONADO sy-vline 
WA_P21_KULONADO_FORM_STR-MEGFIZ_ADO sy-vline 
WA_P21_KULONADO_FORM_STR-LEVONT_JAR sy-vline 
WA_P21_KULONADO_FORM_STR-SZJA_2010 sy-vline 
WA_P21_KULONADO_FORM_STR-SZJA_REGI sy-vline 
WA_P21_KULONADO_FORM_STR-MNYP_ABEV sy-vline 
WA_P21_KULONADO_FORM_STR-MVNYJ_ABEV sy-vline 
WA_P21_KULONADO_FORM_STR-SUM_ABEV sy-vline 
WA_P21_KULONADO_FORM_STR-WAERS sy-vline 
WA_P21_KULONADO_FORM_STR-ENAME sy-vline 
WA_P21_KULONADO_FORM_STR-CIM sy-vline 
WA_P21_KULONADO_FORM_STR-LAND1 sy-vline 
WA_P21_KULONADO_FORM_STR-IRSZ sy-vline 
WA_P21_KULONADO_FORM_STR-HELY sy-vline 
WA_P21_KULONADO_FORM_STR-KOZN sy-vline 
WA_P21_KULONADO_FORM_STR-KOZJ sy-vline 
WA_P21_KULONADO_FORM_STR-HAZSZ sy-vline 
WA_P21_KULONADO_FORM_STR-EPUL sy-vline 
WA_P21_KULONADO_FORM_STR-LEPCS sy-vline 
WA_P21_KULONADO_FORM_STR-EM sy-vline 
WA_P21_KULONADO_FORM_STR-AJTO sy-vline      INTO ld_text SEPARATED BY SPACE.

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