ABAP Select data from SAP table VJ_1IRTGRP into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP VJ_1IRTGRP 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 VJ_1IRTGRP. 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 VJ_1IRTGRP 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_VJ_1IRTGRP TYPE STANDARD TABLE OF VJ_1IRTGRP,
      WA_VJ_1IRTGRP TYPE VJ_1IRTGRP,
      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: <VJ_1IRTGRP> TYPE VJ_1IRTGRP.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_VJ_1IRTGRP.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM VJ_1IRTGRP
  INTO TABLE IT_VJ_1IRTGRP.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VJ_1IRTGRP
*  INTO TABLE @DATA(IT_VJ_1IRTGRP2).
*--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_VJ_1IRTGRP INDEX 1 INTO DATA(WA_VJ_1IRTGRP2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_VJ_1IRTGRP ASSIGNING <VJ_1IRTGRP>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VJ_1IRTGRP>-MANDT = 1.
<VJ_1IRTGRP>-TOLGP = 1.
<VJ_1IRTGRP>-TOLBS1 = 1.
<VJ_1IRTGRP>-UPVAL1 = 1.
<VJ_1IRTGRP>-LOVAL1 = 1.

ENDLOOP.

LOOP AT IT_VJ_1IRTGRP INTO WA_VJ_1IRTGRP.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VJ_1IRTGRP-WAERS1, sy-vline,
  WA_VJ_1IRTGRP-TOLBS2, sy-vline,
  WA_VJ_1IRTGRP-UPVAL2, sy-vline,
  WA_VJ_1IRTGRP-LOVAL2, sy-vline,
  WA_VJ_1IRTGRP-WAERS2, sy-vline,
ENDLOOP.
   
*Add any further fields from structure WA_VJ_1IRTGRP 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_VJ_1IRTGRP 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_VJ_1IRTGRP INTO WA_VJ_1IRTGRP.


*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_VJ_1IRTGRP_STR, 
MANDT TYPE STRING,
TOLGP TYPE STRING,
TOLBS1 TYPE STRING,
UPVAL1 TYPE STRING,
LOVAL1 TYPE STRING,
WAERS1 TYPE STRING,
TOLBS2 TYPE STRING,
UPVAL2 TYPE STRING,
LOVAL2 TYPE STRING,
WAERS2 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VJ_1IRTGRP_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_VJ_1IRTGRP_STR-MANDT sy-vline 
WA_VJ_1IRTGRP_STR-TOLGP sy-vline 
WA_VJ_1IRTGRP_STR-TOLBS1 sy-vline 
WA_VJ_1IRTGRP_STR-UPVAL1 sy-vline 
WA_VJ_1IRTGRP_STR-LOVAL1 sy-vline 
WA_VJ_1IRTGRP_STR-WAERS1 sy-vline 
WA_VJ_1IRTGRP_STR-TOLBS2 sy-vline 
WA_VJ_1IRTGRP_STR-UPVAL2 sy-vline 
WA_VJ_1IRTGRP_STR-LOVAL2 sy-vline 
WA_VJ_1IRTGRP_STR-WAERS2 sy-vline      INTO ld_text SEPARATED BY SPACE.

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