ABAP Select data from SAP table IEIMPMTRDMLATT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IEIMPMTRDMLATT
*  INTO TABLE @DATA(IT_IEIMPMTRDMLATT2).
*--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_IEIMPMTRDMLATT INDEX 1 INTO DATA(WA_IEIMPMTRDMLATT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IEIMPMTRDMLATT>-MANDT = 1.
<IEIMPMTRDMLATT>-METERREADINGDOCUMENT = 1.
<IEIMPMTRDMLATT>-UTILITIESINSTALLATION = 1.
<IEIMPMTRDMLATT>-METERREADINGREASON = 1.
<IEIMPMTRDMLATT>-INDEPMTRRDNGVALDTNCLASS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IEIMPMTRDMLATT-UTILSREGDEPDNTVALDTNGROUP, sy-vline,
  WA_IEIMPMTRDMLATT-DIVISION, sy-vline,
  WA_IEIMPMTRDMLATT-METERREADINGDATE, sy-vline,
  WA_IEIMPMTRDMLATT-UTILSCURCONSVAL, sy-vline,
  WA_IEIMPMTRDMLATT-UTILSNRMLZDCURCONSVAL, sy-vline,
  WA_IEIMPMTRDMLATT-UTILSEXPDCONSVAL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IEIMPMTRDMLATT 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_IEIMPMTRDMLATT 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_IEIMPMTRDMLATT INTO WA_IEIMPMTRDMLATT.


*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 METERREADINGDOCUMENT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IEIMPMTRDMLATT-METERREADINGDOCUMENT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IEIMPMTRDMLATT-METERREADINGDOCUMENT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field UTILITIESINSTALLATION
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IEIMPMTRDMLATT-UTILITIESINSTALLATION
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IEIMPMTRDMLATT-UTILITIESINSTALLATION.
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_IEIMPMTRDMLATT_STR, 
MANDT TYPE STRING,
METERREADINGDOCUMENT TYPE STRING,
UTILITIESINSTALLATION TYPE STRING,
METERREADINGREASON TYPE STRING,
INDEPMTRRDNGVALDTNCLASS TYPE STRING,
UTILSREGDEPDNTVALDTNGROUP TYPE STRING,
DIVISION TYPE STRING,
METERREADINGDATE TYPE STRING,
UTILSCURCONSVAL TYPE STRING,
UTILSNRMLZDCURCONSVAL TYPE STRING,
UTILSEXPDCONSVAL TYPE STRING,
UTILSNRMLZDEXPDCONSVAL TYPE STRING,
UTILSDIFFCUREXPDCONSVAL TYPE STRING,
UTILSDIFFCUREXPDNRMLZDCONSVAL TYPE STRING,
UTILSRLTVDIFFCUREXPDCONSVAL TYPE STRING,
UTILSAVGNRMLZDCONSHISTVAL TYPE STRING,
UTILSMINNRMLZDCONSHISTVAL TYPE STRING,
UTILSMAXNRMLZDCONSHISTVAL TYPE STRING,
UTILSDIFFNRMLZDCURAVGHISTVAL TYPE STRING,
UTILSRLTVDIFFNRMLZDCURAVGVAL TYPE STRING,
UTILSDIFFNRMLZDCURMINHISTVAL TYPE STRING,
UTILSRLTVDIFFNRMLZDCURMINVAL TYPE STRING,
UTILSDIFFNRMLZDCURMAXHISTVAL TYPE STRING,
UTILSRLTVDIFFNRMLZDCURMAXVAL TYPE STRING,
UTILSDIFFCURLOWRLMTCONSVAL TYPE STRING,
UTILSRLTVDIFFCURLOWRLMTCONSVAL TYPE STRING,
UTILSDIFFCURUPRLMTCONSVAL TYPE STRING,
UTILSRLTVDIFFCURUPRLMTCONSVAL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IEIMPMTRDMLATT_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_IEIMPMTRDMLATT_STR-MANDT sy-vline 
WA_IEIMPMTRDMLATT_STR-METERREADINGDOCUMENT sy-vline 
WA_IEIMPMTRDMLATT_STR-UTILITIESINSTALLATION sy-vline 
WA_IEIMPMTRDMLATT_STR-METERREADINGREASON sy-vline 
WA_IEIMPMTRDMLATT_STR-INDEPMTRRDNGVALDTNCLASS sy-vline 
WA_IEIMPMTRDMLATT_STR-UTILSREGDEPDNTVALDTNGROUP sy-vline 
WA_IEIMPMTRDMLATT_STR-DIVISION sy-vline 
WA_IEIMPMTRDMLATT_STR-METERREADINGDATE sy-vline 
WA_IEIMPMTRDMLATT_STR-UTILSCURCONSVAL sy-vline 
WA_IEIMPMTRDMLATT_STR-UTILSNRMLZDCURCONSVAL sy-vline 
WA_IEIMPMTRDMLATT_STR-UTILSEXPDCONSVAL sy-vline 
WA_IEIMPMTRDMLATT_STR-UTILSNRMLZDEXPDCONSVAL sy-vline 
WA_IEIMPMTRDMLATT_STR-UTILSDIFFCUREXPDCONSVAL sy-vline 
WA_IEIMPMTRDMLATT_STR-UTILSDIFFCUREXPDNRMLZDCONSVAL sy-vline 
WA_IEIMPMTRDMLATT_STR-UTILSRLTVDIFFCUREXPDCONSVAL sy-vline 
WA_IEIMPMTRDMLATT_STR-UTILSAVGNRMLZDCONSHISTVAL sy-vline 
WA_IEIMPMTRDMLATT_STR-UTILSMINNRMLZDCONSHISTVAL sy-vline 
WA_IEIMPMTRDMLATT_STR-UTILSMAXNRMLZDCONSHISTVAL sy-vline 
WA_IEIMPMTRDMLATT_STR-UTILSDIFFNRMLZDCURAVGHISTVAL sy-vline 
WA_IEIMPMTRDMLATT_STR-UTILSRLTVDIFFNRMLZDCURAVGVAL sy-vline 
WA_IEIMPMTRDMLATT_STR-UTILSDIFFNRMLZDCURMINHISTVAL sy-vline 
WA_IEIMPMTRDMLATT_STR-UTILSRLTVDIFFNRMLZDCURMINVAL sy-vline 
WA_IEIMPMTRDMLATT_STR-UTILSDIFFNRMLZDCURMAXHISTVAL sy-vline 
WA_IEIMPMTRDMLATT_STR-UTILSRLTVDIFFNRMLZDCURMAXVAL sy-vline 
WA_IEIMPMTRDMLATT_STR-UTILSDIFFCURLOWRLMTCONSVAL sy-vline 
WA_IEIMPMTRDMLATT_STR-UTILSRLTVDIFFCURLOWRLMTCONSVAL sy-vline 
WA_IEIMPMTRDMLATT_STR-UTILSDIFFCURUPRLMTCONSVAL sy-vline 
WA_IEIMPMTRDMLATT_STR-UTILSRLTVDIFFCURUPRLMTCONSVAL sy-vline      INTO ld_text SEPARATED BY SPACE.

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