ABAP Select data from SAP table JIT_HD_OIT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM JIT_HD_OIT
*  INTO TABLE @DATA(IT_JIT_HD_OIT2).
*--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_JIT_HD_OIT INDEX 1 INTO DATA(WA_JIT_HD_OIT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<JIT_HD_OIT>-MANDT = 1.
<JIT_HD_OIT>-JINUM = 1.
<JIT_HD_OIT>-CUSTO = 1.
<JIT_HD_OIT>-PRODN = 1.
<JIT_HD_OIT>-SEQNR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_JIT_HD_OIT-VETYP, sy-vline,
  WA_JIT_HD_OIT-VEHID, sy-vline,
  WA_JIT_HD_OIT-TEXHD, sy-vline,
  WA_JIT_HD_OIT-SSPEZ, sy-vline,
  WA_JIT_HD_OIT-NACHB, sy-vline,
  WA_JIT_HD_OIT-ABTYP, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_JIT_HD_OIT 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_JIT_HD_OIT 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_JIT_HD_OIT INTO WA_JIT_HD_OIT.


*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 LIFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_JIT_HD_OIT-LIFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_JIT_HD_OIT-LIFNR.
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_JIT_HD_OIT_STR, 
MANDT TYPE STRING,
JINUM TYPE STRING,
CUSTO TYPE STRING,
PRODN TYPE STRING,
SEQNR TYPE STRING,
VETYP TYPE STRING,
VEHID TYPE STRING,
TEXHD TYPE STRING,
SSPEZ TYPE STRING,
NACHB TYPE STRING,
ABTYP TYPE STRING,
ARCHI TYPE STRING,
DDATA TYPE STRING,
RANGE TYPE STRING,
OUTPO TYPE STRING,
OUTID TYPE STRING,
POSID TYPE STRING,
CNTRL TYPE STRING,
LIFNR TYPE STRING,
GRPIN TYPE STRING,
GRIND TYPE STRING,
INTST TYPE STRING,
INDAT TYPE STRING,
CRDAT TYPE STRING,
RDATE TYPE STRING,
FLAGS TYPE STRING,
TEXIT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_JIT_HD_OIT_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_JIT_HD_OIT_STR-MANDT sy-vline 
WA_JIT_HD_OIT_STR-JINUM sy-vline 
WA_JIT_HD_OIT_STR-CUSTO sy-vline 
WA_JIT_HD_OIT_STR-PRODN sy-vline 
WA_JIT_HD_OIT_STR-SEQNR sy-vline 
WA_JIT_HD_OIT_STR-VETYP sy-vline 
WA_JIT_HD_OIT_STR-VEHID sy-vline 
WA_JIT_HD_OIT_STR-TEXHD sy-vline 
WA_JIT_HD_OIT_STR-SSPEZ sy-vline 
WA_JIT_HD_OIT_STR-NACHB sy-vline 
WA_JIT_HD_OIT_STR-ABTYP sy-vline 
WA_JIT_HD_OIT_STR-ARCHI sy-vline 
WA_JIT_HD_OIT_STR-DDATA sy-vline 
WA_JIT_HD_OIT_STR-RANGE sy-vline 
WA_JIT_HD_OIT_STR-OUTPO sy-vline 
WA_JIT_HD_OIT_STR-OUTID sy-vline 
WA_JIT_HD_OIT_STR-POSID sy-vline 
WA_JIT_HD_OIT_STR-CNTRL sy-vline 
WA_JIT_HD_OIT_STR-LIFNR sy-vline 
WA_JIT_HD_OIT_STR-GRPIN sy-vline 
WA_JIT_HD_OIT_STR-GRIND sy-vline 
WA_JIT_HD_OIT_STR-INTST sy-vline 
WA_JIT_HD_OIT_STR-INDAT sy-vline 
WA_JIT_HD_OIT_STR-CRDAT sy-vline 
WA_JIT_HD_OIT_STR-RDATE sy-vline 
WA_JIT_HD_OIT_STR-FLAGS sy-vline 
WA_JIT_HD_OIT_STR-TEXIT sy-vline      INTO ld_text SEPARATED BY SPACE.

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