ABAP Select data from SAP table JITITDAT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM JITITDAT
*  INTO TABLE @DATA(IT_JITITDAT2).
*--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_JITITDAT INDEX 1 INTO DATA(WA_JITITDAT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<JITITDAT>-PDATE = 1.
<JITITDAT>-EXTST = 1.
<JITITDAT>-EXDAT = 1.
<JITITDAT>-INTST = 1.
<JITITDAT>-INDAT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_JITITDAT-FERPA, sy-vline,
  WA_JITITDAT-RUECK, sy-vline,
  WA_JITITDAT-BACKF, sy-vline,
  WA_JITITDAT-EXIDV, sy-vline,
  WA_JITITDAT-DDATE, sy-vline,
  WA_JITITDAT-VBELN_VL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_JITITDAT 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_JITITDAT 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_JITITDAT INTO WA_JITITDAT.


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

*Conversion exit ALPHA, internal->external for field VBELN_VL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_JITITDAT-VBELN_VL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_JITITDAT-VBELN_VL.
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_JITITDAT_STR, 
PDATE TYPE STRING,
EXTST TYPE STRING,
EXDAT TYPE STRING,
INTST TYPE STRING,
INDAT TYPE STRING,
FERPA TYPE STRING,
RUECK TYPE STRING,
BACKF TYPE STRING,
EXIDV TYPE STRING,
DDATE TYPE STRING,
VBELN_VL TYPE STRING,
DCREA TYPE STRING,
AGTSL TYPE STRING,
GRPIN TYPE STRING,
GRIND TYPE STRING,
BWEXT TYPE STRING,
RDATE TYPE STRING,
POSNR_VL TYPE STRING,
TEXIT TYPE STRING,
CGARC TYPE STRING,
OUTEX TYPE STRING,
GIPOS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_JITITDAT_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_JITITDAT_STR-PDATE sy-vline 
WA_JITITDAT_STR-EXTST sy-vline 
WA_JITITDAT_STR-EXDAT sy-vline 
WA_JITITDAT_STR-INTST sy-vline 
WA_JITITDAT_STR-INDAT sy-vline 
WA_JITITDAT_STR-FERPA sy-vline 
WA_JITITDAT_STR-RUECK sy-vline 
WA_JITITDAT_STR-BACKF sy-vline 
WA_JITITDAT_STR-EXIDV sy-vline 
WA_JITITDAT_STR-DDATE sy-vline 
WA_JITITDAT_STR-VBELN_VL sy-vline 
WA_JITITDAT_STR-DCREA sy-vline 
WA_JITITDAT_STR-AGTSL sy-vline 
WA_JITITDAT_STR-GRPIN sy-vline 
WA_JITITDAT_STR-GRIND sy-vline 
WA_JITITDAT_STR-BWEXT sy-vline 
WA_JITITDAT_STR-RDATE sy-vline 
WA_JITITDAT_STR-POSNR_VL sy-vline 
WA_JITITDAT_STR-TEXIT sy-vline 
WA_JITITDAT_STR-CGARC sy-vline 
WA_JITITDAT_STR-OUTEX sy-vline 
WA_JITITDAT_STR-GIPOS sy-vline      INTO ld_text SEPARATED BY SPACE.

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