ABAP Select data from SAP table J_1IRAINHDR into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP J_1IRAINHDR 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_1IRAINHDR. 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_1IRAINHDR 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_1IRAINHDR TYPE STANDARD TABLE OF J_1IRAINHDR,
      WA_J_1IRAINHDR TYPE J_1IRAINHDR,
      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_1IRAINHDR> TYPE J_1IRAINHDR.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_J_1IRAINHDR.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM J_1IRAINHDR
  INTO TABLE IT_J_1IRAINHDR.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM J_1IRAINHDR
*  INTO TABLE @DATA(IT_J_1IRAINHDR2).
*--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_1IRAINHDR INDEX 1 INTO DATA(WA_J_1IRAINHDR2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_J_1IRAINHDR ASSIGNING <J_1IRAINHDR>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<J_1IRAINHDR>-MANDT = 1.
<J_1IRAINHDR>-AINNO = 1.
<J_1IRAINHDR>-AINYR = 1.
<J_1IRAINHDR>-EKORG = 1.
<J_1IRAINHDR>-LIFNR = 1.

ENDLOOP.

LOOP AT IT_J_1IRAINHDR INTO WA_J_1IRAINHDR.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_J_1IRAINHDR-BLDAT, sy-vline,
  WA_J_1IRAINHDR-BUDAT, sy-vline,
  WA_J_1IRAINHDR-LFSNR, sy-vline,
  WA_J_1IRAINHDR-XBLNR, sy-vline,
  WA_J_1IRAINHDR-BKTXT, sy-vline,
  WA_J_1IRAINHDR-FRBNR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_J_1IRAINHDR 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_1IRAINHDR 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_1IRAINHDR INTO WA_J_1IRAINHDR.


*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 AINNO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_J_1IRAINHDR-AINNO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_1IRAINHDR-AINNO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field AINYR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_J_1IRAINHDR-AINYR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_1IRAINHDR-AINYR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LIFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_J_1IRAINHDR-LIFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_1IRAINHDR-LIFNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field REFDOC1
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_J_1IRAINHDR-REFDOC1
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_1IRAINHDR-REFDOC1.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field MBLNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_J_1IRAINHDR-MBLNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_1IRAINHDR-MBLNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field MJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_J_1IRAINHDR-MJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_1IRAINHDR-MJAHR.
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_1IRAINHDR_STR, 
MANDT TYPE STRING,
AINNO TYPE STRING,
AINYR TYPE STRING,
EKORG TYPE STRING,
LIFNR TYPE STRING,
BLDAT TYPE STRING,
BUDAT TYPE STRING,
LFSNR TYPE STRING,
XBLNR TYPE STRING,
BKTXT TYPE STRING,
FRBNR TYPE STRING,
INVAMT TYPE STRING,
WAERS TYPE STRING,
PONAMT TYPE STRING,
POCURR TYPE STRING,
REFDOC1 TYPE STRING,
MBLNR TYPE STRING,
MJAHR TYPE STRING,
STATUS TYPE STRING,
USNAM TYPE STRING,
AEDAT TYPE STRING,
UPCOST TYPE STRING,
REJ_CODE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_J_1IRAINHDR_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_1IRAINHDR_STR-MANDT sy-vline 
WA_J_1IRAINHDR_STR-AINNO sy-vline 
WA_J_1IRAINHDR_STR-AINYR sy-vline 
WA_J_1IRAINHDR_STR-EKORG sy-vline 
WA_J_1IRAINHDR_STR-LIFNR sy-vline 
WA_J_1IRAINHDR_STR-BLDAT sy-vline 
WA_J_1IRAINHDR_STR-BUDAT sy-vline 
WA_J_1IRAINHDR_STR-LFSNR sy-vline 
WA_J_1IRAINHDR_STR-XBLNR sy-vline 
WA_J_1IRAINHDR_STR-BKTXT sy-vline 
WA_J_1IRAINHDR_STR-FRBNR sy-vline 
WA_J_1IRAINHDR_STR-INVAMT sy-vline 
WA_J_1IRAINHDR_STR-WAERS sy-vline 
WA_J_1IRAINHDR_STR-PONAMT sy-vline 
WA_J_1IRAINHDR_STR-POCURR sy-vline 
WA_J_1IRAINHDR_STR-REFDOC1 sy-vline 
WA_J_1IRAINHDR_STR-MBLNR sy-vline 
WA_J_1IRAINHDR_STR-MJAHR sy-vline 
WA_J_1IRAINHDR_STR-STATUS sy-vline 
WA_J_1IRAINHDR_STR-USNAM sy-vline 
WA_J_1IRAINHDR_STR-AEDAT sy-vline 
WA_J_1IRAINHDR_STR-UPCOST sy-vline 
WA_J_1IRAINHDR_STR-REJ_CODE sy-vline      INTO ld_text SEPARATED BY SPACE.

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