ABAP Select data from SAP table ISI_JIT_DATA into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ISI_JIT_DATA
*  INTO TABLE @DATA(IT_ISI_JIT_DATA2).
*--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_ISI_JIT_DATA INDEX 1 INTO DATA(WA_ISI_JIT_DATA2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ISI_JIT_DATA>-ID = 1.
<ISI_JIT_DATA>-HEADER = 1.
<ISI_JIT_DATA>-JITCALLNUMBER = 1.
<ISI_JIT_DATA>-VENDOR_NO = 1.
<ISI_JIT_DATA>-EXTERNALJITCALLNUMBER = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ISI_JIT_DATA-CUSTOMERPRODUCTNUMBER, sy-vline,
  WA_ISI_JIT_DATA-SEQUENCENUMBER, sy-vline,
  WA_ISI_JIT_DATA-CUSTOMER, sy-vline,
  WA_ISI_JIT_DATA-DESC_PARTN, sy-vline,
  WA_ISI_JIT_DATA-VEHICLETYPE, sy-vline,
  WA_ISI_JIT_DATA-SPECIALSPECIFICATION, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ISI_JIT_DATA 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_ISI_JIT_DATA 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_ISI_JIT_DATA INTO WA_ISI_JIT_DATA.


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

*Conversion exit ALPHA, internal->external for field CUSTOMER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ISI_JIT_DATA-CUSTOMER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISI_JIT_DATA-CUSTOMER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATNL, internal->external for field CUST_MAT
CALL FUNCTION 'CONVERSION_EXIT_MATNL_OUTPUT'
  EXPORTING
    input =                      WA_ISI_JIT_DATA-CUST_MAT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISI_JIT_DATA-CUST_MAT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field SALES_UNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_ISI_JIT_DATA-SALES_UNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISI_JIT_DATA-SALES_UNIT.
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_ISI_JIT_DATA_STR, 
ID TYPE STRING,
HEADER TYPE STRING,
JITCALLNUMBER TYPE STRING,
VENDOR_NO TYPE STRING,
EXTERNALJITCALLNUMBER TYPE STRING,
CUSTOMERPRODUCTNUMBER TYPE STRING,
SEQUENCENUMBER TYPE STRING,
CUSTOMER TYPE STRING,
DESC_PARTN TYPE STRING,
VEHICLETYPE TYPE STRING,
SPECIALSPECIFICATION TYPE STRING,
TEXT TYPE STRING,
ITEM TYPE STRING,
JITCALLNUMBER TYPE STRING,
MATERIAL TYPE STRING,
CUST_MAT TYPE STRING,
SALES_UNIT TYPE STRING,
SALES_QUANTITY TYPE STRING,
PLANT TYPE STRING,
DESTI TYPE STRING,
PLANNEDSHIPDATE TYPE STRING,
STATUS TYPE STRING,
STATUSDATE TYPE STRING,
TEXT TYPE STRING,
OUTPO TYPE STRING,
MINDATE TYPE STRING,
SEL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ISI_JIT_DATA_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_ISI_JIT_DATA_STR-ID sy-vline 
WA_ISI_JIT_DATA_STR-HEADER sy-vline 
WA_ISI_JIT_DATA_STR-JITCALLNUMBER sy-vline 
WA_ISI_JIT_DATA_STR-VENDOR_NO sy-vline 
WA_ISI_JIT_DATA_STR-EXTERNALJITCALLNUMBER sy-vline 
WA_ISI_JIT_DATA_STR-CUSTOMERPRODUCTNUMBER sy-vline 
WA_ISI_JIT_DATA_STR-SEQUENCENUMBER sy-vline 
WA_ISI_JIT_DATA_STR-CUSTOMER sy-vline 
WA_ISI_JIT_DATA_STR-DESC_PARTN sy-vline 
WA_ISI_JIT_DATA_STR-VEHICLETYPE sy-vline 
WA_ISI_JIT_DATA_STR-SPECIALSPECIFICATION sy-vline 
WA_ISI_JIT_DATA_STR-TEXT sy-vline 
WA_ISI_JIT_DATA_STR-ITEM sy-vline 
WA_ISI_JIT_DATA_STR-JITCALLNUMBER sy-vline 
WA_ISI_JIT_DATA_STR-MATERIAL sy-vline 
WA_ISI_JIT_DATA_STR-CUST_MAT sy-vline 
WA_ISI_JIT_DATA_STR-SALES_UNIT sy-vline 
WA_ISI_JIT_DATA_STR-SALES_QUANTITY sy-vline 
WA_ISI_JIT_DATA_STR-PLANT sy-vline 
WA_ISI_JIT_DATA_STR-DESTI sy-vline 
WA_ISI_JIT_DATA_STR-PLANNEDSHIPDATE sy-vline 
WA_ISI_JIT_DATA_STR-STATUS sy-vline 
WA_ISI_JIT_DATA_STR-STATUSDATE sy-vline 
WA_ISI_JIT_DATA_STR-TEXT sy-vline 
WA_ISI_JIT_DATA_STR-OUTPO sy-vline 
WA_ISI_JIT_DATA_STR-MINDATE sy-vline 
WA_ISI_JIT_DATA_STR-SEL sy-vline      INTO ld_text SEPARATED BY SPACE.

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