ABAP Select data from SAP table J_1IRG1 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP J_1IRG1 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_1IRG1. 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_1IRG1 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_1IRG1 TYPE STANDARD TABLE OF J_1IRG1,
      WA_J_1IRG1 TYPE J_1IRG1,
      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_1IRG1> TYPE J_1IRG1.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_J_1IRG1.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM J_1IRG1
  INTO TABLE IT_J_1IRG1.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM J_1IRG1
*  INTO TABLE @DATA(IT_J_1IRG12).
*--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_1IRG1 INDEX 1 INTO DATA(WA_J_1IRG12).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_J_1IRG1 ASSIGNING <J_1IRG1>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<J_1IRG1>-MANDT = 1.
<J_1IRG1>-EXGRP = 1.
<J_1IRG1>-SYEAR = 1.
<J_1IRG1>-SERIALNO = 1.
<J_1IRG1>-CHAPID = 1.

ENDLOOP.

LOOP AT IT_J_1IRG1 INTO WA_J_1IRG1.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_J_1IRG1-MBLNR, sy-vline,
  WA_J_1IRG1-MJAHR, sy-vline,
  WA_J_1IRG1-ZEILE, sy-vline,
  WA_J_1IRG1-RULES, sy-vline,
  WA_J_1IRG1-BWART, sy-vline,
  WA_J_1IRG1-MATNR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_J_1IRG1 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_1IRG1 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_1IRG1 INTO WA_J_1IRG1.


*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_1IRG1-MBLNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_1IRG1-MBLNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field MJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_J_1IRG1-MJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_1IRG1-MJAHR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_J_1IRG1-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_1IRG1-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_J_1IRG1-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_1IRG1-MEINS.
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_1IRG1_STR, 
MANDT TYPE STRING,
EXGRP TYPE STRING,
SYEAR TYPE STRING,
SERIALNO TYPE STRING,
CHAPID TYPE STRING,
MBLNR TYPE STRING,
MJAHR TYPE STRING,
ZEILE TYPE STRING,
RULES TYPE STRING,
BWART TYPE STRING,
MATNR TYPE STRING,
MATFORM TYPE STRING,
MENGE TYPE STRING,
MEINS TYPE STRING,
MAKTX TYPE STRING,
WERKS TYPE STRING,
LGORT TYPE STRING,
CHARG TYPE STRING,
LGORTIND TYPE STRING,
RISIND TYPE STRING,
RCPTISSRSN TYPE STRING,
DOWNL TYPE STRING,
DECLRD TYPE STRING,
EXPIND TYPE STRING,
REASON TYPE STRING,
REMARKS TYPE STRING,
RDOC1 TYPE STRING,
RYEAR1 TYPE STRING,
RIND1 TYPE STRING,
BEDRATE TYPE STRING,
AEDRATE TYPE STRING,
SEDRATE TYPE STRING,
EXCUR TYPE STRING,
EXBAS TYPE STRING,
EXBED TYPE STRING,
EXAED TYPE STRING,
EXSED TYPE STRING,
CESS TYPE STRING,
STATUS TYPE STRING,
USNAM TYPE STRING,
CPUDT TYPE STRING,
CPUTM TYPE STRING,
AEDAT TYPE STRING,
AENAM TYPE STRING,
NCCDRATE TYPE STRING,
NCCD TYPE STRING,
ECSRATE TYPE STRING,
ECS TYPE STRING,
EXADDRATE1 TYPE STRING,
EXADDTAX1 TYPE STRING,
EXADDRATE2 TYPE STRING,
EXADDTAX2 TYPE STRING,
EXADDRATE3 TYPE STRING,
EXADDTAX3 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_J_1IRG1_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_1IRG1_STR-MANDT sy-vline 
WA_J_1IRG1_STR-EXGRP sy-vline 
WA_J_1IRG1_STR-SYEAR sy-vline 
WA_J_1IRG1_STR-SERIALNO sy-vline 
WA_J_1IRG1_STR-CHAPID sy-vline 
WA_J_1IRG1_STR-MBLNR sy-vline 
WA_J_1IRG1_STR-MJAHR sy-vline 
WA_J_1IRG1_STR-ZEILE sy-vline 
WA_J_1IRG1_STR-RULES sy-vline 
WA_J_1IRG1_STR-BWART sy-vline 
WA_J_1IRG1_STR-MATNR sy-vline 
WA_J_1IRG1_STR-MATFORM sy-vline 
WA_J_1IRG1_STR-MENGE sy-vline 
WA_J_1IRG1_STR-MEINS sy-vline 
WA_J_1IRG1_STR-MAKTX sy-vline 
WA_J_1IRG1_STR-WERKS sy-vline 
WA_J_1IRG1_STR-LGORT sy-vline 
WA_J_1IRG1_STR-CHARG sy-vline 
WA_J_1IRG1_STR-LGORTIND sy-vline 
WA_J_1IRG1_STR-RISIND sy-vline 
WA_J_1IRG1_STR-RCPTISSRSN sy-vline 
WA_J_1IRG1_STR-DOWNL sy-vline 
WA_J_1IRG1_STR-DECLRD sy-vline 
WA_J_1IRG1_STR-EXPIND sy-vline 
WA_J_1IRG1_STR-REASON sy-vline 
WA_J_1IRG1_STR-REMARKS sy-vline 
WA_J_1IRG1_STR-RDOC1 sy-vline 
WA_J_1IRG1_STR-RYEAR1 sy-vline 
WA_J_1IRG1_STR-RIND1 sy-vline 
WA_J_1IRG1_STR-BEDRATE sy-vline 
WA_J_1IRG1_STR-AEDRATE sy-vline 
WA_J_1IRG1_STR-SEDRATE sy-vline 
WA_J_1IRG1_STR-EXCUR sy-vline 
WA_J_1IRG1_STR-EXBAS sy-vline 
WA_J_1IRG1_STR-EXBED sy-vline 
WA_J_1IRG1_STR-EXAED sy-vline 
WA_J_1IRG1_STR-EXSED sy-vline 
WA_J_1IRG1_STR-CESS sy-vline 
WA_J_1IRG1_STR-STATUS sy-vline 
WA_J_1IRG1_STR-USNAM sy-vline 
WA_J_1IRG1_STR-CPUDT sy-vline 
WA_J_1IRG1_STR-CPUTM sy-vline 
WA_J_1IRG1_STR-AEDAT sy-vline 
WA_J_1IRG1_STR-AENAM sy-vline 
WA_J_1IRG1_STR-NCCDRATE sy-vline 
WA_J_1IRG1_STR-NCCD sy-vline 
WA_J_1IRG1_STR-ECSRATE sy-vline 
WA_J_1IRG1_STR-ECS sy-vline 
WA_J_1IRG1_STR-EXADDRATE1 sy-vline 
WA_J_1IRG1_STR-EXADDTAX1 sy-vline 
WA_J_1IRG1_STR-EXADDRATE2 sy-vline 
WA_J_1IRG1_STR-EXADDTAX2 sy-vline 
WA_J_1IRG1_STR-EXADDRATE3 sy-vline 
WA_J_1IRG1_STR-EXADDTAX3 sy-vline      INTO ld_text SEPARATED BY SPACE.

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