ABAP Select data from SAP table PKR_FORM_YEAE_HEADER into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PKR_FORM_YEAE_HEADER
*  INTO TABLE @DATA(IT_PKR_FORM_YEAE_HEADER2).
*--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_PKR_FORM_YEAE_HEADER INDEX 1 INTO DATA(WA_PKR_FORM_YEAE_HEADER2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PKR_FORM_YEAE_HEADER>-ENAME = 1.
<PKR_FORM_YEAE_HEADER>-REGNO0_7 = 1.
<PKR_FORM_YEAE_HEADER>-TRFGR = 1.
<PKR_FORM_YEAE_HEADER>-TRFST = 1.
<PKR_FORM_YEAE_HEADER>-ADDRE0_8 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PKR_FORM_YEAE_HEADER-RTNYR, sy-vline,
  WA_PKR_FORM_YEAE_HEADER-COMNM, sy-vline,
  WA_PKR_FORM_YEAE_HEADER-STCD20_3, sy-vline,
  WA_PKR_FORM_YEAE_HEADER-SMTDA, sy-vline,
  WA_PKR_FORM_YEAE_HEADER-WTHHL, sy-vline,
  WA_PKR_FORM_YEAE_HEADER-DPNTS_H, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PKR_FORM_YEAE_HEADER 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_PKR_FORM_YEAE_HEADER 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_PKR_FORM_YEAE_HEADER INTO WA_PKR_FORM_YEAE_HEADER.


*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 RTNYR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_PKR_FORM_YEAE_HEADER-RTNYR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PKR_FORM_YEAE_HEADER-RTNYR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit REGNO, internal->external for field REGNO
CALL FUNCTION 'CONVERSION_EXIT_REGNO_OUTPUT'
  EXPORTING
    input =                      WA_PKR_FORM_YEAE_HEADER-REGNO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PKR_FORM_YEAE_HEADER-REGNO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field TAXYR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_PKR_FORM_YEAE_HEADER-TAXYR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PKR_FORM_YEAE_HEADER-TAXYR.
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_PKR_FORM_YEAE_HEADER_STR, 
ENAME TYPE STRING,
REGNO0_7 TYPE STRING,
TRFGR TYPE STRING,
TRFST TYPE STRING,
ADDRE0_8 TYPE STRING,
RTNYR TYPE STRING,
COMNM TYPE STRING,
STCD20_3 TYPE STRING,
SMTDA TYPE STRING,
WTHHL TYPE STRING,
DPNTS_H TYPE STRING,
REGNO7_7 TYPE STRING,
ADDRE8_8 TYPE STRING,
ADDRE0_10 TYPE STRING,
ADDRE10_10 TYPE STRING,
ADDRE20_10 TYPE STRING,
ADDRE30_10 TYPE STRING,
ADDRE40_10 TYPE STRING,
ADDRE50_10 TYPE STRING,
STCD23_2 TYPE STRING,
STCD25_5 TYPE STRING,
REGNO TYPE STRING,
EPADD TYPE STRING,
HRDT TYPE STRING,
LVDT TYPE STRING,
CITZN TYPE STRING,
FORNR TYPE STRING,
NATIO TYPE STRING,
NATCD TYPE STRING,
DPYNG_H TYPE STRING,
EXYES TYPE STRING,
EXNO TYPE STRING,
EXTYP TYPE STRING,
EXBEG TYPE STRING,
EXEND TYPE STRING,
TAXYR TYPE STRING,
COM_SEAL TYPE STRING,
COM_SEAL_S TYPE STRING,
PERNRC TYPE STRING,
ORGTXC TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PKR_FORM_YEAE_HEADER_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_PKR_FORM_YEAE_HEADER_STR-ENAME sy-vline 
WA_PKR_FORM_YEAE_HEADER_STR-REGNO0_7 sy-vline 
WA_PKR_FORM_YEAE_HEADER_STR-TRFGR sy-vline 
WA_PKR_FORM_YEAE_HEADER_STR-TRFST sy-vline 
WA_PKR_FORM_YEAE_HEADER_STR-ADDRE0_8 sy-vline 
WA_PKR_FORM_YEAE_HEADER_STR-RTNYR sy-vline 
WA_PKR_FORM_YEAE_HEADER_STR-COMNM sy-vline 
WA_PKR_FORM_YEAE_HEADER_STR-STCD20_3 sy-vline 
WA_PKR_FORM_YEAE_HEADER_STR-SMTDA sy-vline 
WA_PKR_FORM_YEAE_HEADER_STR-WTHHL sy-vline 
WA_PKR_FORM_YEAE_HEADER_STR-DPNTS_H sy-vline 
WA_PKR_FORM_YEAE_HEADER_STR-REGNO7_7 sy-vline 
WA_PKR_FORM_YEAE_HEADER_STR-ADDRE8_8 sy-vline 
WA_PKR_FORM_YEAE_HEADER_STR-ADDRE0_10 sy-vline 
WA_PKR_FORM_YEAE_HEADER_STR-ADDRE10_10 sy-vline 
WA_PKR_FORM_YEAE_HEADER_STR-ADDRE20_10 sy-vline 
WA_PKR_FORM_YEAE_HEADER_STR-ADDRE30_10 sy-vline 
WA_PKR_FORM_YEAE_HEADER_STR-ADDRE40_10 sy-vline 
WA_PKR_FORM_YEAE_HEADER_STR-ADDRE50_10 sy-vline 
WA_PKR_FORM_YEAE_HEADER_STR-STCD23_2 sy-vline 
WA_PKR_FORM_YEAE_HEADER_STR-STCD25_5 sy-vline 
WA_PKR_FORM_YEAE_HEADER_STR-REGNO sy-vline 
WA_PKR_FORM_YEAE_HEADER_STR-EPADD sy-vline 
WA_PKR_FORM_YEAE_HEADER_STR-HRDT sy-vline 
WA_PKR_FORM_YEAE_HEADER_STR-LVDT sy-vline 
WA_PKR_FORM_YEAE_HEADER_STR-CITZN sy-vline 
WA_PKR_FORM_YEAE_HEADER_STR-FORNR sy-vline 
WA_PKR_FORM_YEAE_HEADER_STR-NATIO sy-vline 
WA_PKR_FORM_YEAE_HEADER_STR-NATCD sy-vline 
WA_PKR_FORM_YEAE_HEADER_STR-DPYNG_H sy-vline 
WA_PKR_FORM_YEAE_HEADER_STR-EXYES sy-vline 
WA_PKR_FORM_YEAE_HEADER_STR-EXNO sy-vline 
WA_PKR_FORM_YEAE_HEADER_STR-EXTYP sy-vline 
WA_PKR_FORM_YEAE_HEADER_STR-EXBEG sy-vline 
WA_PKR_FORM_YEAE_HEADER_STR-EXEND sy-vline 
WA_PKR_FORM_YEAE_HEADER_STR-TAXYR sy-vline 
WA_PKR_FORM_YEAE_HEADER_STR-COM_SEAL sy-vline 
WA_PKR_FORM_YEAE_HEADER_STR-COM_SEAL_S sy-vline 
WA_PKR_FORM_YEAE_HEADER_STR-PERNRC sy-vline 
WA_PKR_FORM_YEAE_HEADER_STR-ORGTXC sy-vline      INTO ld_text SEPARATED BY SPACE.

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