ABAP Select data from SAP table J_1IPART2 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP J_1IPART2 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_1IPART2. 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_1IPART2 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_1IPART2 TYPE STANDARD TABLE OF J_1IPART2,
      WA_J_1IPART2 TYPE J_1IPART2,
      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_1IPART2> TYPE J_1IPART2.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_J_1IPART2.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM J_1IPART2
  INTO TABLE IT_J_1IPART2.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM J_1IPART2
*  INTO TABLE @DATA(IT_J_1IPART22).
*--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_1IPART2 INDEX 1 INTO DATA(WA_J_1IPART22).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_J_1IPART2 ASSIGNING <J_1IPART2>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<J_1IPART2>-MANDT = 1.
<J_1IPART2>-EXGRP = 1.
<J_1IPART2>-REGTYP = 1.
<J_1IPART2>-SYEAR = 1.
<J_1IPART2>-SERIALNO = 1.

ENDLOOP.

LOOP AT IT_J_1IPART2 INTO WA_J_1IPART2.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_J_1IPART2-TRNTYP, sy-vline,
  WA_J_1IPART2-DOCNO, sy-vline,
  WA_J_1IPART2-DOCYR, sy-vline,
  WA_J_1IPART2-REFDOC, sy-vline,
  WA_J_1IPART2-REFYEAR, sy-vline,
  WA_J_1IPART2-REFITEM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_J_1IPART2 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_1IPART2 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_1IPART2 INTO WA_J_1IPART2.


*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 FAWREF
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_J_1IPART2-FAWREF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_1IPART2-FAWREF.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ANLN1
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_J_1IPART2-ANLN1
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_1IPART2-ANLN1.
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_1IPART2_STR, 
MANDT TYPE STRING,
EXGRP TYPE STRING,
REGTYP TYPE STRING,
SYEAR TYPE STRING,
SERIALNO TYPE STRING,
TRNTYP TYPE STRING,
DOCNO TYPE STRING,
DOCYR TYPE STRING,
REFDOC TYPE STRING,
REFYEAR TYPE STRING,
REFITEM TYPE STRING,
REFIND TYPE STRING,
ACTTYP TYPE STRING,
FAWREF TYPE STRING,
FAWTYP TYPE STRING,
FABLART TYPE STRING,
FAYEAR TYPE STRING,
BUDAT TYPE STRING,
BUKRS TYPE STRING,
EXCUR TYPE STRING,
EXBED TYPE STRING,
EXSED TYPE STRING,
EXAED TYPE STRING,
CESS TYPE STRING,
PART2YR TYPE STRING,
RG23ASER TYPE STRING,
RG23CSER TYPE STRING,
RGPLASER TYPE STRING,
SHKZG TYPE STRING,
DOWNL TYPE STRING,
CERTNO TYPE STRING,
CERTDT TYPE STRING,
ANLN1 TYPE STRING,
USNAM TYPE STRING,
CPUDT TYPE STRING,
CPUTM TYPE STRING,
NCCD TYPE STRING,
ECS TYPE STRING,
EXADDTAX1 TYPE STRING,
EXADDTAX2 TYPE STRING,
EXADDTAX3 TYPE STRING,
SERTAXSERNO TYPE STRING,END OF T_EKKO_STR.
DATA: WA_J_1IPART2_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_1IPART2_STR-MANDT sy-vline 
WA_J_1IPART2_STR-EXGRP sy-vline 
WA_J_1IPART2_STR-REGTYP sy-vline 
WA_J_1IPART2_STR-SYEAR sy-vline 
WA_J_1IPART2_STR-SERIALNO sy-vline 
WA_J_1IPART2_STR-TRNTYP sy-vline 
WA_J_1IPART2_STR-DOCNO sy-vline 
WA_J_1IPART2_STR-DOCYR sy-vline 
WA_J_1IPART2_STR-REFDOC sy-vline 
WA_J_1IPART2_STR-REFYEAR sy-vline 
WA_J_1IPART2_STR-REFITEM sy-vline 
WA_J_1IPART2_STR-REFIND sy-vline 
WA_J_1IPART2_STR-ACTTYP sy-vline 
WA_J_1IPART2_STR-FAWREF sy-vline 
WA_J_1IPART2_STR-FAWTYP sy-vline 
WA_J_1IPART2_STR-FABLART sy-vline 
WA_J_1IPART2_STR-FAYEAR sy-vline 
WA_J_1IPART2_STR-BUDAT sy-vline 
WA_J_1IPART2_STR-BUKRS sy-vline 
WA_J_1IPART2_STR-EXCUR sy-vline 
WA_J_1IPART2_STR-EXBED sy-vline 
WA_J_1IPART2_STR-EXSED sy-vline 
WA_J_1IPART2_STR-EXAED sy-vline 
WA_J_1IPART2_STR-CESS sy-vline 
WA_J_1IPART2_STR-PART2YR sy-vline 
WA_J_1IPART2_STR-RG23ASER sy-vline 
WA_J_1IPART2_STR-RG23CSER sy-vline 
WA_J_1IPART2_STR-RGPLASER sy-vline 
WA_J_1IPART2_STR-SHKZG sy-vline 
WA_J_1IPART2_STR-DOWNL sy-vline 
WA_J_1IPART2_STR-CERTNO sy-vline 
WA_J_1IPART2_STR-CERTDT sy-vline 
WA_J_1IPART2_STR-ANLN1 sy-vline 
WA_J_1IPART2_STR-USNAM sy-vline 
WA_J_1IPART2_STR-CPUDT sy-vline 
WA_J_1IPART2_STR-CPUTM sy-vline 
WA_J_1IPART2_STR-NCCD sy-vline 
WA_J_1IPART2_STR-ECS sy-vline 
WA_J_1IPART2_STR-EXADDTAX1 sy-vline 
WA_J_1IPART2_STR-EXADDTAX2 sy-vline 
WA_J_1IPART2_STR-EXADDTAX3 sy-vline 
WA_J_1IPART2_STR-SERTAXSERNO sy-vline      INTO ld_text SEPARATED BY SPACE.

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