ABAP Select data from SAP table JITTC0 into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

Below is a number of ABAP code snippets to demonstrate how to select data from SAP JITTC0 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 JITTC0. 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 JITTC0 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_JITTC0 TYPE STANDARD TABLE OF JITTC0,
      WA_JITTC0 TYPE JITTC0,
      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: <JITTC0> TYPE JITTC0.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_JITTC0.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM JITTC0
  INTO TABLE IT_JITTC0.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM JITTC0
*  INTO TABLE @DATA(IT_JITTC02).
*--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_JITTC0 INDEX 1 INTO DATA(WA_JITTC02).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_JITTC0 ASSIGNING <JITTC0>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<JITTC0>-MANDT = 1.
<JITTC0>-AZVAR = 1.
<JITTC0>-UNAME = 1.
<JITTC0>-TCODE = 1.
<JITTC0>-G_LEVEL = 1.

ENDLOOP.

LOOP AT IT_JITTC0 INTO WA_JITTC0.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_JITTC0-TZONE, sy-vline,
  WA_JITTC0-CSIZE, sy-vline,
  WA_JITTC0-INSCR, sy-vline,
  WA_JITTC0-INFOTEXT, sy-vline,
  WA_JITTC0-NEWLINE, sy-vline,
  WA_JITTC0-MAJORCRIT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_JITTC0 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_JITTC0 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_JITTC0 INTO WA_JITTC0.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_JITTC0_STR, 
MANDT TYPE STRING,
AZVAR TYPE STRING,
UNAME TYPE STRING,
TCODE TYPE STRING,
G_LEVEL TYPE STRING,
TZONE TYPE STRING,
CSIZE TYPE STRING,
INSCR TYPE STRING,
INFOTEXT TYPE STRING,
NEWLINE TYPE STRING,
MAJORCRIT TYPE STRING,
MINORCRIT TYPE STRING,
SELCRIT1 TYPE STRING,
SELCRIT2 TYPE STRING,
SELCRIT3 TYPE STRING,
SELCRIT4 TYPE STRING,
SELCRIT5 TYPE STRING,
SHOW TYPE STRING,
COLPROF TYPE STRING,
CHART TYPE STRING,
ACTION TYPE STRING,
SASHG TYPE STRING,
SASHD TYPE STRING,
SASHS TYPE STRING,
SASHC TYPE STRING,
GRASH TYPE STRING,
DETSH TYPE STRING,
SETSH TYPE STRING,
COMSH TYPE STRING,
REFRS TYPE STRING,
FREQU TYPE STRING,
SEQBR TYPE STRING,
CTYPE TYPE STRING,
SISES TYPE STRING,
AUTACT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_JITTC0_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_JITTC0_STR-MANDT sy-vline 
WA_JITTC0_STR-AZVAR sy-vline 
WA_JITTC0_STR-UNAME sy-vline 
WA_JITTC0_STR-TCODE sy-vline 
WA_JITTC0_STR-G_LEVEL sy-vline 
WA_JITTC0_STR-TZONE sy-vline 
WA_JITTC0_STR-CSIZE sy-vline 
WA_JITTC0_STR-INSCR sy-vline 
WA_JITTC0_STR-INFOTEXT sy-vline 
WA_JITTC0_STR-NEWLINE sy-vline 
WA_JITTC0_STR-MAJORCRIT sy-vline 
WA_JITTC0_STR-MINORCRIT sy-vline 
WA_JITTC0_STR-SELCRIT1 sy-vline 
WA_JITTC0_STR-SELCRIT2 sy-vline 
WA_JITTC0_STR-SELCRIT3 sy-vline 
WA_JITTC0_STR-SELCRIT4 sy-vline 
WA_JITTC0_STR-SELCRIT5 sy-vline 
WA_JITTC0_STR-SHOW sy-vline 
WA_JITTC0_STR-COLPROF sy-vline 
WA_JITTC0_STR-CHART sy-vline 
WA_JITTC0_STR-ACTION sy-vline 
WA_JITTC0_STR-SASHG sy-vline 
WA_JITTC0_STR-SASHD sy-vline 
WA_JITTC0_STR-SASHS sy-vline 
WA_JITTC0_STR-SASHC sy-vline 
WA_JITTC0_STR-GRASH sy-vline 
WA_JITTC0_STR-DETSH sy-vline 
WA_JITTC0_STR-SETSH sy-vline 
WA_JITTC0_STR-COMSH sy-vline 
WA_JITTC0_STR-REFRS sy-vline 
WA_JITTC0_STR-FREQU sy-vline 
WA_JITTC0_STR-SEQBR sy-vline 
WA_JITTC0_STR-CTYPE sy-vline 
WA_JITTC0_STR-SISES sy-vline 
WA_JITTC0_STR-AUTACT sy-vline      INTO ld_text SEPARATED BY SPACE.

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