ABAP Select data from SAP table INV_MONITORING_DISPLAY into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM INV_MONITORING_DISPLAY
*  INTO TABLE @DATA(IT_INV_MONITORING_DISPLAY2).
*--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_INV_MONITORING_DISPLAY INDEX 1 INTO DATA(WA_INV_MONITORING_DISPLAY2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<INV_MONITORING_DISPLAY>-MAX_HEAD = 1.
<INV_MONITORING_DISPLAY>-NUM_HEAD = 1.
<INV_MONITORING_DISPLAY>-MAX_DOC = 1.
<INV_MONITORING_DISPLAY>-NUM_DOC = 1.
<INV_MONITORING_DISPLAY>-DISPLAY = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_INV_MONITORING_DISPLAY-ALLALV, sy-vline,
  WA_INV_MONITORING_DISPLAY-DOCALV, sy-vline,
  WA_INV_MONITORING_DISPLAY-HEADDYNPRO, sy-vline,
  WA_INV_MONITORING_DISPLAY-HEADAMODAL, sy-vline,
  WA_INV_MONITORING_DISPLAY-HEADALV, sy-vline,
  WA_INV_MONITORING_DISPLAY-INVOICE_TYPE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_INV_MONITORING_DISPLAY 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_INV_MONITORING_DISPLAY 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_INV_MONITORING_DISPLAY INTO WA_INV_MONITORING_DISPLAY.


*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_INV_MONITORING_DISPLAY_STR, 
MAX_HEAD TYPE STRING,
NUM_HEAD TYPE STRING,
MAX_DOC TYPE STRING,
NUM_DOC TYPE STRING,
DISPLAY TYPE STRING,
ALLALV TYPE STRING,
DOCALV TYPE STRING,
HEADDYNPRO TYPE STRING,
HEADAMODAL TYPE STRING,
HEADALV TYPE STRING,
INVOICE_TYPE TYPE STRING,
TINV_INT_INV_NO TYPE STRING,
ISEL_BEGRU TYPE STRING,
ISEL_INT_SENDER TYPE STRING,
ISEL_INT_RECEIVER TYPE STRING,
ISEL_DATE_RECEIPT TYPE STRING,
ISEL_INVOICE_STATUS TYPE STRING,
ISEL_INT_PARTNER TYPE STRING,
ISEL_DOC_TYPE TYPE STRING,
ISEL_INVOICE_DATE TYPE STRING,
ISEL_DATE_OF_PAYMENT TYPE STRING,
ISEL_DOC_STATUS TYPE STRING,
ISEL_EXT_INVOICE_NO TYPE STRING,
ISEL_INV_BULK_REF TYPE STRING,
ISEL_DOC_NO TYPE STRING,
EXT_IDENT_TYPE TYPE STRING,
ISEL_EXT_ID TYPE STRING,
SELECT_LOGLINE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_INV_MONITORING_DISPLAY_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_INV_MONITORING_DISPLAY_STR-MAX_HEAD sy-vline 
WA_INV_MONITORING_DISPLAY_STR-NUM_HEAD sy-vline 
WA_INV_MONITORING_DISPLAY_STR-MAX_DOC sy-vline 
WA_INV_MONITORING_DISPLAY_STR-NUM_DOC sy-vline 
WA_INV_MONITORING_DISPLAY_STR-DISPLAY sy-vline 
WA_INV_MONITORING_DISPLAY_STR-ALLALV sy-vline 
WA_INV_MONITORING_DISPLAY_STR-DOCALV sy-vline 
WA_INV_MONITORING_DISPLAY_STR-HEADDYNPRO sy-vline 
WA_INV_MONITORING_DISPLAY_STR-HEADAMODAL sy-vline 
WA_INV_MONITORING_DISPLAY_STR-HEADALV sy-vline 
WA_INV_MONITORING_DISPLAY_STR-INVOICE_TYPE sy-vline 
WA_INV_MONITORING_DISPLAY_STR-TINV_INT_INV_NO sy-vline 
WA_INV_MONITORING_DISPLAY_STR-ISEL_BEGRU sy-vline 
WA_INV_MONITORING_DISPLAY_STR-ISEL_INT_SENDER sy-vline 
WA_INV_MONITORING_DISPLAY_STR-ISEL_INT_RECEIVER sy-vline 
WA_INV_MONITORING_DISPLAY_STR-ISEL_DATE_RECEIPT sy-vline 
WA_INV_MONITORING_DISPLAY_STR-ISEL_INVOICE_STATUS sy-vline 
WA_INV_MONITORING_DISPLAY_STR-ISEL_INT_PARTNER sy-vline 
WA_INV_MONITORING_DISPLAY_STR-ISEL_DOC_TYPE sy-vline 
WA_INV_MONITORING_DISPLAY_STR-ISEL_INVOICE_DATE sy-vline 
WA_INV_MONITORING_DISPLAY_STR-ISEL_DATE_OF_PAYMENT sy-vline 
WA_INV_MONITORING_DISPLAY_STR-ISEL_DOC_STATUS sy-vline 
WA_INV_MONITORING_DISPLAY_STR-ISEL_EXT_INVOICE_NO sy-vline 
WA_INV_MONITORING_DISPLAY_STR-ISEL_INV_BULK_REF sy-vline 
WA_INV_MONITORING_DISPLAY_STR-ISEL_DOC_NO sy-vline 
WA_INV_MONITORING_DISPLAY_STR-EXT_IDENT_TYPE sy-vline 
WA_INV_MONITORING_DISPLAY_STR-ISEL_EXT_ID sy-vline 
WA_INV_MONITORING_DISPLAY_STR-SELECT_LOGLINE sy-vline      INTO ld_text SEPARATED BY SPACE.

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