ABAP Select data from SAP table J_3RF_TP_ECATT_PX_PERPREDSD into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP J_3RF_TP_ECATT_PX_PERPREDSD 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 J_3RF_TP_ECATT_PX_PERPREDSD. 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 J_3RF_TP_ECATT_PX_PERPREDSD 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_J_3RF_TP_ECATT_PX_PERPREDSD TYPE STANDARD TABLE OF J_3RF_TP_ECATT_PX_PERPREDSD,
      WA_J_3RF_TP_ECATT_PX_PERPREDSD TYPE J_3RF_TP_ECATT_PX_PERPREDSD,
      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: <J_3RF_TP_ECATT_PX_PERPREDSD> TYPE J_3RF_TP_ECATT_PX_PERPREDSD.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_J_3RF_TP_ECATT_PX_PERPREDSD.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM J_3RF_TP_ECATT_PX_PERPREDSD
  INTO TABLE IT_J_3RF_TP_ECATT_PX_PERPREDSD.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM J_3RF_TP_ECATT_PX_PERPREDSD
*  INTO TABLE @DATA(IT_J_3RF_TP_ECATT_PX_PERPREDSD2).
*--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_J_3RF_TP_ECATT_PX_PERPREDSD INDEX 1 INTO DATA(WA_J_3RF_TP_ECATT_PX_PERPREDSD2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_J_3RF_TP_ECATT_PX_PERPREDSD ASSIGNING <J_3RF_TP_ECATT_PX_PERPREDSD>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<J_3RF_TP_ECATT_PX_PERPREDSD>-DATADOG = 1.
<J_3RF_TP_ECATT_PX_PERPREDSD>-DATASOVSD = 1.
<J_3RF_TP_ECATT_PX_PERPREDSD>-KODUSLOVPOST = 1.
<J_3RF_TP_ECATT_PX_PERPREDSD>-KOLICHESTVO = 1.
<J_3RF_TP_ECATT_PX_PERPREDSD>-NAIMPREDSD = 1.

ENDLOOP.

LOOP AT IT_J_3RF_TP_ECATT_PX_PERPREDSD INTO WA_J_3RF_TP_ECATT_PX_PERPREDSD.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_J_3RF_TP_ECATT_PX_PERPREDSD-NOMDOG, sy-vline,
  WA_J_3RF_TP_ECATT_PX_PERPREDSD-NOMUCHSD, sy-vline,
  WA_J_3RF_TP_ECATT_PX_PERPREDSD-OKVED, sy-vline,
  WA_J_3RF_TP_ECATT_PX_PERPREDSD-OKEI, sy-vline,
  WA_J_3RF_TP_ECATT_PX_PERPREDSD-OKP, sy-vline,
  WA_J_3RF_TP_ECATT_PX_PERPREDSD-OKSM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_J_3RF_TP_ECATT_PX_PERPREDSD 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_J_3RF_TP_ECATT_PX_PERPREDSD 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_J_3RF_TP_ECATT_PX_PERPREDSD INTO WA_J_3RF_TP_ECATT_PX_PERPREDSD.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_J_3RF_TP_ECATT_PX_PERPREDSD_STR, 
DATADOG TYPE STRING,
DATASOVSD TYPE STRING,
KODUSLOVPOST TYPE STRING,
KOLICHESTVO TYPE STRING,
NAIMPREDSD TYPE STRING,
NOMDOG TYPE STRING,
NOMUCHSD TYPE STRING,
OKVED TYPE STRING,
OKEI TYPE STRING,
OKP TYPE STRING,
OKSM TYPE STRING,
OKSM_T TYPE STRING,
STOIMITOG TYPE STRING,
TNVED TYPE STRING,
TSENAEDIN TYPE STRING,
MESTOTPRTOV TYPE STRING,
GOROD TYPE STRING,
KODREGION TYPE STRING,
NASELPUNKT TYPE STRING,
OKSM TYPE STRING,
MESTSOVSD TYPE STRING,
GOROD TYPE STRING,
KODREGION TYPE STRING,
NASELPUNKT TYPE STRING,
OKSM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_J_3RF_TP_ECATT_PX_PERPREDSD_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_J_3RF_TP_ECATT_PX_PERPREDSD_STR-DATADOG sy-vline 
WA_J_3RF_TP_ECATT_PX_PERPREDSD_STR-DATASOVSD sy-vline 
WA_J_3RF_TP_ECATT_PX_PERPREDSD_STR-KODUSLOVPOST sy-vline 
WA_J_3RF_TP_ECATT_PX_PERPREDSD_STR-KOLICHESTVO sy-vline 
WA_J_3RF_TP_ECATT_PX_PERPREDSD_STR-NAIMPREDSD sy-vline 
WA_J_3RF_TP_ECATT_PX_PERPREDSD_STR-NOMDOG sy-vline 
WA_J_3RF_TP_ECATT_PX_PERPREDSD_STR-NOMUCHSD sy-vline 
WA_J_3RF_TP_ECATT_PX_PERPREDSD_STR-OKVED sy-vline 
WA_J_3RF_TP_ECATT_PX_PERPREDSD_STR-OKEI sy-vline 
WA_J_3RF_TP_ECATT_PX_PERPREDSD_STR-OKP sy-vline 
WA_J_3RF_TP_ECATT_PX_PERPREDSD_STR-OKSM sy-vline 
WA_J_3RF_TP_ECATT_PX_PERPREDSD_STR-OKSM_T sy-vline 
WA_J_3RF_TP_ECATT_PX_PERPREDSD_STR-STOIMITOG sy-vline 
WA_J_3RF_TP_ECATT_PX_PERPREDSD_STR-TNVED sy-vline 
WA_J_3RF_TP_ECATT_PX_PERPREDSD_STR-TSENAEDIN sy-vline 
WA_J_3RF_TP_ECATT_PX_PERPREDSD_STR-MESTOTPRTOV sy-vline 
WA_J_3RF_TP_ECATT_PX_PERPREDSD_STR-GOROD sy-vline 
WA_J_3RF_TP_ECATT_PX_PERPREDSD_STR-KODREGION sy-vline 
WA_J_3RF_TP_ECATT_PX_PERPREDSD_STR-NASELPUNKT sy-vline 
WA_J_3RF_TP_ECATT_PX_PERPREDSD_STR-OKSM sy-vline 
WA_J_3RF_TP_ECATT_PX_PERPREDSD_STR-MESTSOVSD sy-vline 
WA_J_3RF_TP_ECATT_PX_PERPREDSD_STR-GOROD sy-vline 
WA_J_3RF_TP_ECATT_PX_PERPREDSD_STR-KODREGION sy-vline 
WA_J_3RF_TP_ECATT_PX_PERPREDSD_STR-NASELPUNKT sy-vline 
WA_J_3RF_TP_ECATT_PX_PERPREDSD_STR-OKSM sy-vline      INTO ld_text SEPARATED BY SPACE.

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