ABAP Select data from SAP table JITO_ITH into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM JITO_ITH
*  INTO TABLE @DATA(IT_JITO_ITH2).
*--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_JITO_ITH INDEX 1 INTO DATA(WA_JITO_ITH2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<JITO_ITH>-OUTPO = 1.
<JITO_ITH>-WERKS = 1.
<JITO_ITH>-ABLAD = 1.
<JITO_ITH>-PRVBE = 1.
<JITO_ITH>-POSID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_JITO_ITH-OUTID, sy-vline,
  WA_JITO_ITH-LIFNR, sy-vline,
  WA_JITO_ITH-PABPRF, sy-vline,
  WA_JITO_ITH-PABNPL, sy-vline,
  WA_JITO_ITH-CNTRL, sy-vline,
  WA_JITO_ITH-SUMRST2, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_JITO_ITH 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_JITO_ITH 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_JITO_ITH INTO WA_JITO_ITH.


*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_JITO_ITH-LIFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_JITO_ITH-LIFNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PABNPL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_JITO_ITH-PABNPL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_JITO_ITH-PABNPL.
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_JITO_ITH_STR, 
OUTPO TYPE STRING,
WERKS TYPE STRING,
ABLAD TYPE STRING,
PRVBE TYPE STRING,
POSID TYPE STRING,
OUTID TYPE STRING,
LIFNR TYPE STRING,
PABPRF TYPE STRING,
PABNPL TYPE STRING,
CNTRL TYPE STRING,
SUMRST2 TYPE STRING,
SUMRST3 TYPE STRING,
SEQRST2 TYPE STRING,
PKUMW TYPE STRING,END OF T_EKKO_STR.
DATA: WA_JITO_ITH_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_JITO_ITH_STR-OUTPO sy-vline 
WA_JITO_ITH_STR-WERKS sy-vline 
WA_JITO_ITH_STR-ABLAD sy-vline 
WA_JITO_ITH_STR-PRVBE sy-vline 
WA_JITO_ITH_STR-POSID sy-vline 
WA_JITO_ITH_STR-OUTID sy-vline 
WA_JITO_ITH_STR-LIFNR sy-vline 
WA_JITO_ITH_STR-PABPRF sy-vline 
WA_JITO_ITH_STR-PABNPL sy-vline 
WA_JITO_ITH_STR-CNTRL sy-vline 
WA_JITO_ITH_STR-SUMRST2 sy-vline 
WA_JITO_ITH_STR-SUMRST3 sy-vline 
WA_JITO_ITH_STR-SEQRST2 sy-vline 
WA_JITO_ITH_STR-PKUMW sy-vline      INTO ld_text SEPARATED BY SPACE.

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