ABAP Select data from SAP table ADSUB_S_MSEG_SC_MONITOR into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ADSUB_S_MSEG_SC_MONITOR
*  INTO TABLE @DATA(IT_ADSUB_S_MSEG_SC_MONITOR2).
*--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_ADSUB_S_MSEG_SC_MONITOR INDEX 1 INTO DATA(WA_ADSUB_S_MSEG_SC_MONITOR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ADSUB_S_MSEG_SC_MONITOR>-MBLNR = 1.
<ADSUB_S_MSEG_SC_MONITOR>-MJAHR = 1.
<ADSUB_S_MSEG_SC_MONITOR>-ZEILE = 1.
<ADSUB_S_MSEG_SC_MONITOR>-BLDAT = 1.
<ADSUB_S_MSEG_SC_MONITOR>-BUDAT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ADSUB_S_MSEG_SC_MONITOR-XBLNR, sy-vline,
  WA_ADSUB_S_MSEG_SC_MONITOR-BWART, sy-vline,
  WA_ADSUB_S_MSEG_SC_MONITOR-SHKZG, sy-vline,
  WA_ADSUB_S_MSEG_SC_MONITOR-WERKS, sy-vline,
  WA_ADSUB_S_MSEG_SC_MONITOR-LGORT, sy-vline,
  WA_ADSUB_S_MSEG_SC_MONITOR-CHARG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ADSUB_S_MSEG_SC_MONITOR 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_ADSUB_S_MSEG_SC_MONITOR 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_ADSUB_S_MSEG_SC_MONITOR INTO WA_ADSUB_S_MSEG_SC_MONITOR.


*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_ADSUB_S_MSEG_SC_MONITOR-MBLNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ADSUB_S_MSEG_SC_MONITOR-MBLNR.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ALPHA, internal->external for field LIFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ADSUB_S_MSEG_SC_MONITOR-LIFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ADSUB_S_MSEG_SC_MONITOR-LIFNR.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit CUNIT, internal->external for field MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_ADSUB_S_MSEG_SC_MONITOR-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ADSUB_S_MSEG_SC_MONITOR-MEINS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field ERFME
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_ADSUB_S_MSEG_SC_MONITOR-ERFME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ADSUB_S_MSEG_SC_MONITOR-ERFME.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field EBELN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ADSUB_S_MSEG_SC_MONITOR-EBELN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ADSUB_S_MSEG_SC_MONITOR-EBELN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KUNNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ADSUB_S_MSEG_SC_MONITOR-KUNNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ADSUB_S_MSEG_SC_MONITOR-KUNNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field MAT_KDAUF
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ADSUB_S_MSEG_SC_MONITOR-MAT_KDAUF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ADSUB_S_MSEG_SC_MONITOR-MAT_KDAUF.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field DISUB_OWNER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ADSUB_S_MSEG_SC_MONITOR-DISUB_OWNER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ADSUB_S_MSEG_SC_MONITOR-DISUB_OWNER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ABPSP, internal->external for field MAT_PSPNR
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_ADSUB_S_MSEG_SC_MONITOR-MAT_PSPNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ADSUB_S_MSEG_SC_MONITOR-MAT_PSPNR.
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_ADSUB_S_MSEG_SC_MONITOR_STR, 
MBLNR TYPE STRING,
MJAHR TYPE STRING,
ZEILE TYPE STRING,
BLDAT TYPE STRING,
BUDAT TYPE STRING,
XBLNR TYPE STRING,
BWART TYPE STRING,
SHKZG TYPE STRING,
WERKS TYPE STRING,
LGORT TYPE STRING,
CHARG TYPE STRING,
BWTAR TYPE STRING,
LIFNR TYPE STRING,
MATNR TYPE STRING,
MENGE TYPE STRING,
MEINS TYPE STRING,
ERFMG TYPE STRING,
ERFME TYPE STRING,
EBELN TYPE STRING,
EBELP TYPE STRING,
SOBKZ TYPE STRING,
KUNNR TYPE STRING,
MAT_KDAUF TYPE STRING,
MAT_KDPOS TYPE STRING,
DISUB_OWNER TYPE STRING,
MAT_PSPNR TYPE STRING,
URZEI TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ADSUB_S_MSEG_SC_MONITOR_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_ADSUB_S_MSEG_SC_MONITOR_STR-MBLNR sy-vline 
WA_ADSUB_S_MSEG_SC_MONITOR_STR-MJAHR sy-vline 
WA_ADSUB_S_MSEG_SC_MONITOR_STR-ZEILE sy-vline 
WA_ADSUB_S_MSEG_SC_MONITOR_STR-BLDAT sy-vline 
WA_ADSUB_S_MSEG_SC_MONITOR_STR-BUDAT sy-vline 
WA_ADSUB_S_MSEG_SC_MONITOR_STR-XBLNR sy-vline 
WA_ADSUB_S_MSEG_SC_MONITOR_STR-BWART sy-vline 
WA_ADSUB_S_MSEG_SC_MONITOR_STR-SHKZG sy-vline 
WA_ADSUB_S_MSEG_SC_MONITOR_STR-WERKS sy-vline 
WA_ADSUB_S_MSEG_SC_MONITOR_STR-LGORT sy-vline 
WA_ADSUB_S_MSEG_SC_MONITOR_STR-CHARG sy-vline 
WA_ADSUB_S_MSEG_SC_MONITOR_STR-BWTAR sy-vline 
WA_ADSUB_S_MSEG_SC_MONITOR_STR-LIFNR sy-vline 
WA_ADSUB_S_MSEG_SC_MONITOR_STR-MATNR sy-vline 
WA_ADSUB_S_MSEG_SC_MONITOR_STR-MENGE sy-vline 
WA_ADSUB_S_MSEG_SC_MONITOR_STR-MEINS sy-vline 
WA_ADSUB_S_MSEG_SC_MONITOR_STR-ERFMG sy-vline 
WA_ADSUB_S_MSEG_SC_MONITOR_STR-ERFME sy-vline 
WA_ADSUB_S_MSEG_SC_MONITOR_STR-EBELN sy-vline 
WA_ADSUB_S_MSEG_SC_MONITOR_STR-EBELP sy-vline 
WA_ADSUB_S_MSEG_SC_MONITOR_STR-SOBKZ sy-vline 
WA_ADSUB_S_MSEG_SC_MONITOR_STR-KUNNR sy-vline 
WA_ADSUB_S_MSEG_SC_MONITOR_STR-MAT_KDAUF sy-vline 
WA_ADSUB_S_MSEG_SC_MONITOR_STR-MAT_KDPOS sy-vline 
WA_ADSUB_S_MSEG_SC_MONITOR_STR-DISUB_OWNER sy-vline 
WA_ADSUB_S_MSEG_SC_MONITOR_STR-MAT_PSPNR sy-vline 
WA_ADSUB_S_MSEG_SC_MONITOR_STR-URZEI sy-vline      INTO ld_text SEPARATED BY SPACE.

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