ABAP Select data from SAP table J_1IEXCSTR into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP J_1IEXCSTR 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 J_1IEXCSTR. 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 J_1IEXCSTR 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_J_1IEXCSTR TYPE STANDARD TABLE OF J_1IEXCSTR,
      WA_J_1IEXCSTR TYPE J_1IEXCSTR,
      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: <J_1IEXCSTR> TYPE J_1IEXCSTR.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_J_1IEXCSTR.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM J_1IEXCSTR
  INTO TABLE IT_J_1IEXCSTR.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM J_1IEXCSTR
*  INTO TABLE @DATA(IT_J_1IEXCSTR2).
*--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_J_1IEXCSTR INDEX 1 INTO DATA(WA_J_1IEXCSTR2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_J_1IEXCSTR ASSIGNING <J_1IEXCSTR>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<J_1IEXCSTR>-MBLNR = 1.
<J_1IEXCSTR>-MJAHR = 1.
<J_1IEXCSTR>-ITEM_NO = 1.
<J_1IEXCSTR>-MATNR = 1.
<J_1IEXCSTR>-CHAPID = 1.

ENDLOOP.

LOOP AT IT_J_1IEXCSTR INTO WA_J_1IEXCSTR.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_J_1IEXCSTR-CREDIT_QTY, sy-vline,
  WA_J_1IEXCSTR-MEINS, sy-vline,
  WA_J_1IEXCSTR-WAERS, sy-vline,
  WA_J_1IEXCSTR-EXBAS, sy-vline,
  WA_J_1IEXCSTR-BEDRATE, sy-vline,
  WA_J_1IEXCSTR-EXCISE_BED, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_J_1IEXCSTR 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_J_1IEXCSTR 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_J_1IEXCSTR INTO WA_J_1IEXCSTR.


*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 MBLNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_J_1IEXCSTR-MBLNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_1IEXCSTR-MBLNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field MJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_J_1IEXCSTR-MJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_1IEXCSTR-MJAHR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_J_1IEXCSTR-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_1IEXCSTR-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_J_1IEXCSTR-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_1IEXCSTR-MEINS.
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_J_1IEXCSTR_STR, 
MBLNR TYPE STRING,
MJAHR TYPE STRING,
ITEM_NO TYPE STRING,
MATNR TYPE STRING,
CHAPID TYPE STRING,
CREDIT_QTY TYPE STRING,
MEINS TYPE STRING,
WAERS TYPE STRING,
EXBAS TYPE STRING,
BEDRATE TYPE STRING,
EXCISE_BED TYPE STRING,
BEDINV TYPE STRING,
AEDRATE TYPE STRING,
EXCISE_AED TYPE STRING,
AEDINV TYPE STRING,
SEDRATE TYPE STRING,
EXCISE_SED TYPE STRING,
SEDINV TYPE STRING,
NCCDRATE TYPE STRING,
EXCISE_NCCD TYPE STRING,
NCCDINV TYPE STRING,
ECSRATE TYPE STRING,
EXCISE_ECS TYPE STRING,
ECSINV TYPE STRING,
EXADDRATE1 TYPE STRING,
EXCISE_AT1 TYPE STRING,
EXADDINV1 TYPE STRING,
EXADDRATE2 TYPE STRING,
EXCISE_AT2 TYPE STRING,
EXADDINV2 TYPE STRING,
EXADDRATE3 TYPE STRING,
EXCISE_AT3 TYPE STRING,
EXADDINV3 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_J_1IEXCSTR_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_J_1IEXCSTR_STR-MBLNR sy-vline 
WA_J_1IEXCSTR_STR-MJAHR sy-vline 
WA_J_1IEXCSTR_STR-ITEM_NO sy-vline 
WA_J_1IEXCSTR_STR-MATNR sy-vline 
WA_J_1IEXCSTR_STR-CHAPID sy-vline 
WA_J_1IEXCSTR_STR-CREDIT_QTY sy-vline 
WA_J_1IEXCSTR_STR-MEINS sy-vline 
WA_J_1IEXCSTR_STR-WAERS sy-vline 
WA_J_1IEXCSTR_STR-EXBAS sy-vline 
WA_J_1IEXCSTR_STR-BEDRATE sy-vline 
WA_J_1IEXCSTR_STR-EXCISE_BED sy-vline 
WA_J_1IEXCSTR_STR-BEDINV sy-vline 
WA_J_1IEXCSTR_STR-AEDRATE sy-vline 
WA_J_1IEXCSTR_STR-EXCISE_AED sy-vline 
WA_J_1IEXCSTR_STR-AEDINV sy-vline 
WA_J_1IEXCSTR_STR-SEDRATE sy-vline 
WA_J_1IEXCSTR_STR-EXCISE_SED sy-vline 
WA_J_1IEXCSTR_STR-SEDINV sy-vline 
WA_J_1IEXCSTR_STR-NCCDRATE sy-vline 
WA_J_1IEXCSTR_STR-EXCISE_NCCD sy-vline 
WA_J_1IEXCSTR_STR-NCCDINV sy-vline 
WA_J_1IEXCSTR_STR-ECSRATE sy-vline 
WA_J_1IEXCSTR_STR-EXCISE_ECS sy-vline 
WA_J_1IEXCSTR_STR-ECSINV sy-vline 
WA_J_1IEXCSTR_STR-EXADDRATE1 sy-vline 
WA_J_1IEXCSTR_STR-EXCISE_AT1 sy-vline 
WA_J_1IEXCSTR_STR-EXADDINV1 sy-vline 
WA_J_1IEXCSTR_STR-EXADDRATE2 sy-vline 
WA_J_1IEXCSTR_STR-EXCISE_AT2 sy-vline 
WA_J_1IEXCSTR_STR-EXADDINV2 sy-vline 
WA_J_1IEXCSTR_STR-EXADDRATE3 sy-vline 
WA_J_1IEXCSTR_STR-EXCISE_AT3 sy-vline 
WA_J_1IEXCSTR_STR-EXADDINV3 sy-vline      INTO ld_text SEPARATED BY SPACE.

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