ABAP Select data from SAP table ESMON_MARUNIDINT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ESMON_MARUNIDINT
*  INTO TABLE @DATA(IT_ESMON_MARUNIDINT2).
*--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_ESMON_MARUNIDINT INDEX 1 INTO DATA(WA_ESMON_MARUNIDINT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ESMON_MARUNIDINT>-CLIENT = 1.
<ESMON_MARUNIDINT>-AKTYP = 1.
<ESMON_MARUNIDINT>-LAUFD = 1.
<ESMON_MARUNIDINT>-LAUFI = 1.
<ESMON_MARUNIDINT>-EXTNUMBER = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ESMON_MARUNIDINT-INTNR, sy-vline,
  WA_ESMON_MARUNIDINT-INTLO, sy-vline,
  WA_ESMON_MARUNIDINT-INTHI, sy-vline,
  WA_ESMON_MARUNIDINT-OBJECT_PROCESS, sy-vline,
  WA_ESMON_MARUNIDINT-OBJECT_ERROR, sy-vline,
  WA_ESMON_MARUNIDINT-OBJECT_WARNING, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ESMON_MARUNIDINT 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_ESMON_MARUNIDINT 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_ESMON_MARUNIDINT INTO WA_ESMON_MARUNIDINT.


*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_ESMON_MARUNIDINT_STR, 
CLIENT TYPE STRING,
AKTYP TYPE STRING,
LAUFD TYPE STRING,
LAUFI TYPE STRING,
EXTNUMBER TYPE STRING,
INTNR TYPE STRING,
INTLO TYPE STRING,
INTHI TYPE STRING,
OBJECT_PROCESS TYPE STRING,
OBJECT_ERROR TYPE STRING,
OBJECT_WARNING TYPE STRING,
OBJECT_SUCCESS TYPE STRING,
MESSAGE_ERROR TYPE STRING,
MESSAGE_WARNING TYPE STRING,
MESSAGE_INFO TYPE STRING,
FTCHBY TYPE STRING,
XFIN TYPE STRING,
ERRNUM TYPE STRING,
HITNUM TYPE STRING,
TBEG TYPE STRING,
DBEG TYPE STRING,
TEND TYPE STRING,
DEND TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ESMON_MARUNIDINT_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_ESMON_MARUNIDINT_STR-CLIENT sy-vline 
WA_ESMON_MARUNIDINT_STR-AKTYP sy-vline 
WA_ESMON_MARUNIDINT_STR-LAUFD sy-vline 
WA_ESMON_MARUNIDINT_STR-LAUFI sy-vline 
WA_ESMON_MARUNIDINT_STR-EXTNUMBER sy-vline 
WA_ESMON_MARUNIDINT_STR-INTNR sy-vline 
WA_ESMON_MARUNIDINT_STR-INTLO sy-vline 
WA_ESMON_MARUNIDINT_STR-INTHI sy-vline 
WA_ESMON_MARUNIDINT_STR-OBJECT_PROCESS sy-vline 
WA_ESMON_MARUNIDINT_STR-OBJECT_ERROR sy-vline 
WA_ESMON_MARUNIDINT_STR-OBJECT_WARNING sy-vline 
WA_ESMON_MARUNIDINT_STR-OBJECT_SUCCESS sy-vline 
WA_ESMON_MARUNIDINT_STR-MESSAGE_ERROR sy-vline 
WA_ESMON_MARUNIDINT_STR-MESSAGE_WARNING sy-vline 
WA_ESMON_MARUNIDINT_STR-MESSAGE_INFO sy-vline 
WA_ESMON_MARUNIDINT_STR-FTCHBY sy-vline 
WA_ESMON_MARUNIDINT_STR-XFIN sy-vline 
WA_ESMON_MARUNIDINT_STR-ERRNUM sy-vline 
WA_ESMON_MARUNIDINT_STR-HITNUM sy-vline 
WA_ESMON_MARUNIDINT_STR-TBEG sy-vline 
WA_ESMON_MARUNIDINT_STR-DBEG sy-vline 
WA_ESMON_MARUNIDINT_STR-TEND sy-vline 
WA_ESMON_MARUNIDINT_STR-DEND sy-vline      INTO ld_text SEPARATED BY SPACE.

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