ABAP Select data from SAP table J_3R_INV18_FSD into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP J_3R_INV18_FSD 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_3R_INV18_FSD. 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_3R_INV18_FSD 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_3R_INV18_FSD TYPE STANDARD TABLE OF J_3R_INV18_FSD,
      WA_J_3R_INV18_FSD TYPE J_3R_INV18_FSD,
      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_3R_INV18_FSD> TYPE J_3R_INV18_FSD.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_J_3R_INV18_FSD.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM J_3R_INV18_FSD
  INTO TABLE IT_J_3R_INV18_FSD.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM J_3R_INV18_FSD
*  INTO TABLE @DATA(IT_J_3R_INV18_FSD2).
*--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_3R_INV18_FSD INDEX 1 INTO DATA(WA_J_3R_INV18_FSD2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_J_3R_INV18_FSD ASSIGNING <J_3R_INV18_FSD>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<J_3R_INV18_FSD>-N01_ORG_NAME = 1.
<J_3R_INV18_FSD>-N02_OKPO = 1.
<J_3R_INV18_FSD>-N03_STRUCT_DEP = 1.
<J_3R_INV18_FSD>-N03A_ACTIVITY = 1.
<J_3R_INV18_FSD>-N04_TYPEIO = 1.

ENDLOOP.

LOOP AT IT_J_3R_INV18_FSD INTO WA_J_3R_INV18_FSD.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_J_3R_INV18_FSD-N05_INV_ORD_NUM, sy-vline,
  WA_J_3R_INV18_FSD-N06_INV_ORD_DATE, sy-vline,
  WA_J_3R_INV18_FSD-N07_INV_BEG_DATE, sy-vline,
  WA_J_3R_INV18_FSD-N08_INV_END_DATE, sy-vline,
  WA_J_3R_INV18_FSD-N09_OP_TYPE, sy-vline,
  WA_J_3R_INV18_FSD-N10B_DOC_NO, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_J_3R_INV18_FSD 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_3R_INV18_FSD 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_3R_INV18_FSD INTO WA_J_3R_INV18_FSD.


*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_J_3R_INV18_FSD_STR, 
N01_ORG_NAME TYPE STRING,
N02_OKPO TYPE STRING,
N03_STRUCT_DEP TYPE STRING,
N03A_ACTIVITY TYPE STRING,
N04_TYPEIO TYPE STRING,
N05_INV_ORD_NUM TYPE STRING,
N06_INV_ORD_DATE TYPE STRING,
N07_INV_BEG_DATE TYPE STRING,
N08_INV_END_DATE TYPE STRING,
N09_OP_TYPE TYPE STRING,
N10B_DOC_NO TYPE STRING,
N11B_DOC_DATE TYPE STRING,
N16_RESP_NAME TYPE STRING,
N7B_INV_BEG_LTRS TYPE STRING,
ACCANT TYPE STRING,
CHRM_N TYPE STRING,
MBR1_N TYPE STRING,
MBR2_N TYPE STRING,
MBR3_N TYPE STRING,
DOC_DATE_DAY TYPE STRING,
DOC_DATE_MONTH TYPE STRING,
DOC_DATE_YEAR TYPE STRING,
INV_DATE_DAY TYPE STRING,
INV_DATE_MONTH TYPE STRING,
INV_DATE_YEAR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_J_3R_INV18_FSD_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_3R_INV18_FSD_STR-N01_ORG_NAME sy-vline 
WA_J_3R_INV18_FSD_STR-N02_OKPO sy-vline 
WA_J_3R_INV18_FSD_STR-N03_STRUCT_DEP sy-vline 
WA_J_3R_INV18_FSD_STR-N03A_ACTIVITY sy-vline 
WA_J_3R_INV18_FSD_STR-N04_TYPEIO sy-vline 
WA_J_3R_INV18_FSD_STR-N05_INV_ORD_NUM sy-vline 
WA_J_3R_INV18_FSD_STR-N06_INV_ORD_DATE sy-vline 
WA_J_3R_INV18_FSD_STR-N07_INV_BEG_DATE sy-vline 
WA_J_3R_INV18_FSD_STR-N08_INV_END_DATE sy-vline 
WA_J_3R_INV18_FSD_STR-N09_OP_TYPE sy-vline 
WA_J_3R_INV18_FSD_STR-N10B_DOC_NO sy-vline 
WA_J_3R_INV18_FSD_STR-N11B_DOC_DATE sy-vline 
WA_J_3R_INV18_FSD_STR-N16_RESP_NAME sy-vline 
WA_J_3R_INV18_FSD_STR-N7B_INV_BEG_LTRS sy-vline 
WA_J_3R_INV18_FSD_STR-ACCANT sy-vline 
WA_J_3R_INV18_FSD_STR-CHRM_N sy-vline 
WA_J_3R_INV18_FSD_STR-MBR1_N sy-vline 
WA_J_3R_INV18_FSD_STR-MBR2_N sy-vline 
WA_J_3R_INV18_FSD_STR-MBR3_N sy-vline 
WA_J_3R_INV18_FSD_STR-DOC_DATE_DAY sy-vline 
WA_J_3R_INV18_FSD_STR-DOC_DATE_MONTH sy-vline 
WA_J_3R_INV18_FSD_STR-DOC_DATE_YEAR sy-vline 
WA_J_3R_INV18_FSD_STR-INV_DATE_DAY sy-vline 
WA_J_3R_INV18_FSD_STR-INV_DATE_MONTH sy-vline 
WA_J_3R_INV18_FSD_STR-INV_DATE_YEAR sy-vline      INTO ld_text SEPARATED BY SPACE.

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