ABAP Select data from SAP table EIV_AISINO_DC_INVOICE_RET_ITM into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EIV_AISINO_DC_INVOICE_RET_ITM
*  INTO TABLE @DATA(IT_EIV_AISINO_DC_INVOICE_RET_ITM2).
*--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_EIV_AISINO_DC_INVOICE_RET_ITM INDEX 1 INTO DATA(WA_EIV_AISINO_DC_INVOICE_RET_ITM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EIV_AISINO_DC_INVOICE_RET_ITM>-PRODNR = 1.
<EIV_AISINO_DC_INVOICE_RET_ITM>-PRODNAME = 1.
<EIV_AISINO_DC_INVOICE_RET_ITM>-SPEC = 1.
<EIV_AISINO_DC_INVOICE_RET_ITM>-UNIT = 1.
<EIV_AISINO_DC_INVOICE_RET_ITM>-QUANTITY = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EIV_AISINO_DC_INVOICE_RET_ITM-PRICE, sy-vline,
  WA_EIV_AISINO_DC_INVOICE_RET_ITM-AMOUNT, sy-vline,
  WA_EIV_AISINO_DC_INVOICE_RET_ITM-TAXRATE, sy-vline,
  WA_EIV_AISINO_DC_INVOICE_RET_ITM-TAX, sy-vline,
  WA_EIV_AISINO_DC_INVOICE_RET_ITM-INCLUDETAX, sy-vline,
  WA_EIV_AISINO_DC_INVOICE_RET_ITM-DISCOUNTVALUE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EIV_AISINO_DC_INVOICE_RET_ITM 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_EIV_AISINO_DC_INVOICE_RET_ITM 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_EIV_AISINO_DC_INVOICE_RET_ITM INTO WA_EIV_AISINO_DC_INVOICE_RET_ITM.


*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_EIV_AISINO_DC_INVOICE_RET_ITM_STR, 
PRODNR TYPE STRING,
PRODNAME TYPE STRING,
SPEC TYPE STRING,
UNIT TYPE STRING,
QUANTITY TYPE STRING,
PRICE TYPE STRING,
AMOUNT TYPE STRING,
TAXRATE TYPE STRING,
TAX TYPE STRING,
INCLUDETAX TYPE STRING,
DISCOUNTVALUE TYPE STRING,
DISCOUNTTAX TYPE STRING,
GOODSNOVER TYPE STRING,
GOODSTAXNO TYPE STRING,
TAXPRE TYPE STRING,
TAXPRECON TYPE STRING,
ZEROTAX TYPE STRING,
TAXDEDUCTION TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EIV_AISINO_DC_INVOICE_RET_ITM_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_EIV_AISINO_DC_INVOICE_RET_ITM_STR-PRODNR sy-vline 
WA_EIV_AISINO_DC_INVOICE_RET_ITM_STR-PRODNAME sy-vline 
WA_EIV_AISINO_DC_INVOICE_RET_ITM_STR-SPEC sy-vline 
WA_EIV_AISINO_DC_INVOICE_RET_ITM_STR-UNIT sy-vline 
WA_EIV_AISINO_DC_INVOICE_RET_ITM_STR-QUANTITY sy-vline 
WA_EIV_AISINO_DC_INVOICE_RET_ITM_STR-PRICE sy-vline 
WA_EIV_AISINO_DC_INVOICE_RET_ITM_STR-AMOUNT sy-vline 
WA_EIV_AISINO_DC_INVOICE_RET_ITM_STR-TAXRATE sy-vline 
WA_EIV_AISINO_DC_INVOICE_RET_ITM_STR-TAX sy-vline 
WA_EIV_AISINO_DC_INVOICE_RET_ITM_STR-INCLUDETAX sy-vline 
WA_EIV_AISINO_DC_INVOICE_RET_ITM_STR-DISCOUNTVALUE sy-vline 
WA_EIV_AISINO_DC_INVOICE_RET_ITM_STR-DISCOUNTTAX sy-vline 
WA_EIV_AISINO_DC_INVOICE_RET_ITM_STR-GOODSNOVER sy-vline 
WA_EIV_AISINO_DC_INVOICE_RET_ITM_STR-GOODSTAXNO sy-vline 
WA_EIV_AISINO_DC_INVOICE_RET_ITM_STR-TAXPRE sy-vline 
WA_EIV_AISINO_DC_INVOICE_RET_ITM_STR-TAXPRECON sy-vline 
WA_EIV_AISINO_DC_INVOICE_RET_ITM_STR-ZEROTAX sy-vline 
WA_EIV_AISINO_DC_INVOICE_RET_ITM_STR-TAXDEDUCTION sy-vline      INTO ld_text SEPARATED BY SPACE.

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