ABAP Select data from SAP table EDOC_IN_IS_IMPG_ITEMS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EDOC_IN_IS_IMPG_ITEMS
*  INTO TABLE @DATA(IT_EDOC_IN_IS_IMPG_ITEMS2).
*--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_EDOC_IN_IS_IMPG_ITEMS INDEX 1 INTO DATA(WA_EDOC_IN_IS_IMPG_ITEMS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EDOC_IN_IS_IMPG_ITEMS>-NUM = 1.
<EDOC_IN_IS_IMPG_ITEMS>-HSNSAC = 1.
<EDOC_IN_IS_IMPG_ITEMS>-DESCRIPTION = 1.
<EDOC_IN_IS_IMPG_ITEMS>-QUANTITY = 1.
<EDOC_IN_IS_IMPG_ITEMS>-UQC = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EDOC_IN_IS_IMPG_ITEMS-TAXBASE, sy-vline,
  WA_EDOC_IN_IS_IMPG_ITEMS-IGSTRATE, sy-vline,
  WA_EDOC_IN_IS_IMPG_ITEMS-IGSTAMT, sy-vline,
  WA_EDOC_IN_IS_IMPG_ITEMS-CESSRATE, sy-vline,
  WA_EDOC_IN_IS_IMPG_ITEMS-CESSAMT, sy-vline,
  WA_EDOC_IN_IS_IMPG_ITEMS-ELG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EDOC_IN_IS_IMPG_ITEMS 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_EDOC_IN_IS_IMPG_ITEMS 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_EDOC_IN_IS_IMPG_ITEMS INTO WA_EDOC_IN_IS_IMPG_ITEMS.


*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 PROFITCENTRE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_EDOC_IN_IS_IMPG_ITEMS-PROFITCENTRE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EDOC_IN_IS_IMPG_ITEMS-PROFITCENTRE.
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_EDOC_IN_IS_IMPG_ITEMS_STR, 
NUM TYPE STRING,
HSNSAC TYPE STRING,
DESCRIPTION TYPE STRING,
QUANTITY TYPE STRING,
UQC TYPE STRING,
TAXBASE TYPE STRING,
IGSTRATE TYPE STRING,
IGSTAMT TYPE STRING,
CESSRATE TYPE STRING,
CESSAMT TYPE STRING,
ELG TYPE STRING,
IGSTITCTAXAMT TYPE STRING,
CESSITCTAXAMT TYPE STRING,
EXTENSION TYPE STRING,
TAXCODE TYPE STRING,
PROFITCENTRE TYPE STRING,
PLANTCODE TYPE STRING,
EXPGL TYPE STRING,
CGSTGL TYPE STRING,
SGSTGL TYPE STRING,
IGSTGL TYPE STRING,
CESSGL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EDOC_IN_IS_IMPG_ITEMS_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_EDOC_IN_IS_IMPG_ITEMS_STR-NUM sy-vline 
WA_EDOC_IN_IS_IMPG_ITEMS_STR-HSNSAC sy-vline 
WA_EDOC_IN_IS_IMPG_ITEMS_STR-DESCRIPTION sy-vline 
WA_EDOC_IN_IS_IMPG_ITEMS_STR-QUANTITY sy-vline 
WA_EDOC_IN_IS_IMPG_ITEMS_STR-UQC sy-vline 
WA_EDOC_IN_IS_IMPG_ITEMS_STR-TAXBASE sy-vline 
WA_EDOC_IN_IS_IMPG_ITEMS_STR-IGSTRATE sy-vline 
WA_EDOC_IN_IS_IMPG_ITEMS_STR-IGSTAMT sy-vline 
WA_EDOC_IN_IS_IMPG_ITEMS_STR-CESSRATE sy-vline 
WA_EDOC_IN_IS_IMPG_ITEMS_STR-CESSAMT sy-vline 
WA_EDOC_IN_IS_IMPG_ITEMS_STR-ELG sy-vline 
WA_EDOC_IN_IS_IMPG_ITEMS_STR-IGSTITCTAXAMT sy-vline 
WA_EDOC_IN_IS_IMPG_ITEMS_STR-CESSITCTAXAMT sy-vline 
WA_EDOC_IN_IS_IMPG_ITEMS_STR-EXTENSION sy-vline 
WA_EDOC_IN_IS_IMPG_ITEMS_STR-TAXCODE sy-vline 
WA_EDOC_IN_IS_IMPG_ITEMS_STR-PROFITCENTRE sy-vline 
WA_EDOC_IN_IS_IMPG_ITEMS_STR-PLANTCODE sy-vline 
WA_EDOC_IN_IS_IMPG_ITEMS_STR-EXPGL sy-vline 
WA_EDOC_IN_IS_IMPG_ITEMS_STR-CGSTGL sy-vline 
WA_EDOC_IN_IS_IMPG_ITEMS_STR-SGSTGL sy-vline 
WA_EDOC_IN_IS_IMPG_ITEMS_STR-IGSTGL sy-vline 
WA_EDOC_IN_IS_IMPG_ITEMS_STR-CESSGL sy-vline      INTO ld_text SEPARATED BY SPACE.

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