ABAP Select data from SAP table J_1IGRXREF into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP J_1IGRXREF 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_1IGRXREF. 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_1IGRXREF 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_1IGRXREF TYPE STANDARD TABLE OF J_1IGRXREF,
      WA_J_1IGRXREF TYPE J_1IGRXREF,
      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_1IGRXREF> TYPE J_1IGRXREF.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_J_1IGRXREF.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM J_1IGRXREF
  INTO TABLE IT_J_1IGRXREF.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM J_1IGRXREF
*  INTO TABLE @DATA(IT_J_1IGRXREF2).
*--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_1IGRXREF INDEX 1 INTO DATA(WA_J_1IGRXREF2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_J_1IGRXREF ASSIGNING <J_1IGRXREF>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<J_1IGRXREF>-MANDT = 1.
<J_1IGRXREF>-MBLNR = 1.
<J_1IGRXREF>-MJAHR = 1.
<J_1IGRXREF>-ZEILE = 1.
<J_1IGRXREF>-EXNUM = 1.

ENDLOOP.

LOOP AT IT_J_1IGRXREF INTO WA_J_1IGRXREF.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_J_1IGRXREF-EXYEAR, sy-vline,
  WA_J_1IGRXREF-LIFNR, sy-vline,
  WA_J_1IGRXREF-EXC_ZEILE, sy-vline,
  WA_J_1IGRXREF-EXDAT, sy-vline,
  WA_J_1IGRXREF-GR_QTY, sy-vline,
  WA_J_1IGRXREF-ALW_QTY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_J_1IGRXREF 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_1IGRXREF 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_1IGRXREF INTO WA_J_1IGRXREF.


*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 ALPHA, internal->external for field MBLNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_J_1IGRXREF-MBLNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_1IGRXREF-MBLNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field MJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_J_1IGRXREF-MJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_1IGRXREF-MJAHR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field EXYEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_J_1IGRXREF-EXYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_1IGRXREF-EXYEAR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LIFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_J_1IGRXREF-LIFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_1IGRXREF-LIFNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_J_1IGRXREF-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_1IGRXREF-MEINS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field RDOC1
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_J_1IGRXREF-RDOC1
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_1IGRXREF-RDOC1.
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_J_1IGRXREF_STR, 
MANDT TYPE STRING,
MBLNR TYPE STRING,
MJAHR TYPE STRING,
ZEILE TYPE STRING,
EXNUM TYPE STRING,
EXYEAR TYPE STRING,
LIFNR TYPE STRING,
EXC_ZEILE TYPE STRING,
EXDAT TYPE STRING,
GR_QTY TYPE STRING,
ALW_QTY TYPE STRING,
CREDIT_QTY TYPE STRING,
MEINS TYPE STRING,
EXBED TYPE STRING,
EXAED TYPE STRING,
EXSED TYPE STRING,
BEDINV TYPE STRING,
AEDINV TYPE STRING,
SEDINV TYPE STRING,
EXCUR TYPE STRING,
RDOC1 TYPE STRING,
RYEAR1 TYPE STRING,
RIND TYPE STRING,
STATUS TYPE STRING,
NCCD TYPE STRING,
NCCDINV TYPE STRING,
ECS TYPE STRING,
ECSINV TYPE STRING,
EXADDTAX1 TYPE STRING,
EXADDINV1 TYPE STRING,
EXADDTAX2 TYPE STRING,
EXADDINV2 TYPE STRING,
EXADDTAX3 TYPE STRING,
EXADDINV3 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_J_1IGRXREF_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_1IGRXREF_STR-MANDT sy-vline 
WA_J_1IGRXREF_STR-MBLNR sy-vline 
WA_J_1IGRXREF_STR-MJAHR sy-vline 
WA_J_1IGRXREF_STR-ZEILE sy-vline 
WA_J_1IGRXREF_STR-EXNUM sy-vline 
WA_J_1IGRXREF_STR-EXYEAR sy-vline 
WA_J_1IGRXREF_STR-LIFNR sy-vline 
WA_J_1IGRXREF_STR-EXC_ZEILE sy-vline 
WA_J_1IGRXREF_STR-EXDAT sy-vline 
WA_J_1IGRXREF_STR-GR_QTY sy-vline 
WA_J_1IGRXREF_STR-ALW_QTY sy-vline 
WA_J_1IGRXREF_STR-CREDIT_QTY sy-vline 
WA_J_1IGRXREF_STR-MEINS sy-vline 
WA_J_1IGRXREF_STR-EXBED sy-vline 
WA_J_1IGRXREF_STR-EXAED sy-vline 
WA_J_1IGRXREF_STR-EXSED sy-vline 
WA_J_1IGRXREF_STR-BEDINV sy-vline 
WA_J_1IGRXREF_STR-AEDINV sy-vline 
WA_J_1IGRXREF_STR-SEDINV sy-vline 
WA_J_1IGRXREF_STR-EXCUR sy-vline 
WA_J_1IGRXREF_STR-RDOC1 sy-vline 
WA_J_1IGRXREF_STR-RYEAR1 sy-vline 
WA_J_1IGRXREF_STR-RIND sy-vline 
WA_J_1IGRXREF_STR-STATUS sy-vline 
WA_J_1IGRXREF_STR-NCCD sy-vline 
WA_J_1IGRXREF_STR-NCCDINV sy-vline 
WA_J_1IGRXREF_STR-ECS sy-vline 
WA_J_1IGRXREF_STR-ECSINV sy-vline 
WA_J_1IGRXREF_STR-EXADDTAX1 sy-vline 
WA_J_1IGRXREF_STR-EXADDINV1 sy-vline 
WA_J_1IGRXREF_STR-EXADDTAX2 sy-vline 
WA_J_1IGRXREF_STR-EXADDINV2 sy-vline 
WA_J_1IGRXREF_STR-EXADDTAX3 sy-vline 
WA_J_1IGRXREF_STR-EXADDINV3 sy-vline      INTO ld_text SEPARATED BY SPACE.

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