ABAP Select data from SAP table ISMETERREADINGDOCUMENTTP_D into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ISMETERREADINGDOCUMENTTP_D
*  INTO TABLE @DATA(IT_ISMETERREADINGDOCUMENTTP_D2).
*--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_ISMETERREADINGDOCUMENTTP_D INDEX 1 INTO DATA(WA_ISMETERREADINGDOCUMENTTP_D2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ISMETERREADINGDOCUMENTTP_D>-METERREADINGDOCUMENT = 1.
<ISMETERREADINGDOCUMENTTP_D>-SERIALNUMBER = 1.
<ISMETERREADINGDOCUMENTTP_D>-EQUIPMENT = 1.
<ISMETERREADINGDOCUMENTTP_D>-UTILITIESREGISTER = 1.
<ISMETERREADINGDOCUMENTTP_D>-METERREADINGDATE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ISMETERREADINGDOCUMENTTP_D-METERREADINGTIME, sy-vline,
  WA_ISMETERREADINGDOCUMENTTP_D-METERREADINGRESULTPREDECIMALS, sy-vline,
  WA_ISMETERREADINGDOCUMENTTP_D-METERREADINGRESULTDECIMALS, sy-vline,
  WA_ISMETERREADINGDOCUMENTTP_D-METERREADINGMEASUREMENTUNIT, sy-vline,
  WA_ISMETERREADINGDOCUMENTTP_D-BLLDMETERREADINGRESULTPREDCMLS, sy-vline,
  WA_ISMETERREADINGDOCUMENTTP_D-BLLDMETERREADINGRESULTDCMLS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ISMETERREADINGDOCUMENTTP_D 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_ISMETERREADINGDOCUMENTTP_D 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_ISMETERREADINGDOCUMENTTP_D INTO WA_ISMETERREADINGDOCUMENTTP_D.


*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_ISMETERREADINGDOCUMENTTP_D-METERREADINGDOCUMENT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISMETERREADINGDOCUMENTTP_D-METERREADINGDOCUMENT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GERNR, internal->external for field SERIALNUMBER
CALL FUNCTION 'CONVERSION_EXIT_GERNR_OUTPUT'
  EXPORTING
    input =                      WA_ISMETERREADINGDOCUMENTTP_D-SERIALNUMBER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISMETERREADINGDOCUMENTTP_D-SERIALNUMBER.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit ALPHA, internal->external for field SERVICEORDER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ISMETERREADINGDOCUMENTTP_D-SERVICEORDER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISMETERREADINGDOCUMENTTP_D-SERVICEORDER.
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_ISMETERREADINGDOCUMENTTP_D_STR, 
METERREADINGDOCUMENT TYPE STRING,
SERIALNUMBER TYPE STRING,
EQUIPMENT TYPE STRING,
UTILITIESREGISTER TYPE STRING,
METERREADINGDATE TYPE STRING,
METERREADINGTIME TYPE STRING,
METERREADINGRESULTPREDECIMALS TYPE STRING,
METERREADINGRESULTDECIMALS TYPE STRING,
METERREADINGMEASUREMENTUNIT TYPE STRING,
BLLDMETERREADINGRESULTPREDCMLS TYPE STRING,
BLLDMETERREADINGRESULTDCMLS TYPE STRING,
BILLINGMEASUREMENTUNIT TYPE STRING,
NMBROFUTILSREGDIGITSPREDCMLS TYPE STRING,
NMBROFUTILSREGDIGITSDCMLS TYPE STRING,
METERREADINGRESULTVALUE TYPE STRING,
METERREADINGCONSUMPTIONACTUAL TYPE STRING,
METERREADINGCONSUMPTIONEXPD TYPE STRING,
METERREADINGRESULTDIFFERENCE TYPE STRING,
METERREADINGSYSTEMDATE TYPE STRING,
METERREADINGORIGINESTIMATION TYPE STRING,
METERREADINGESTIMATEDVALUE TYPE STRING,
METERREADINGSTATUS TYPE STRING,
METERREADINGTYPE TYPE STRING,
METERREADINGCATEGORY TYPE STRING,
SCHEDLDMTRREADINGCATEGORY TYPE STRING,
SCHEDULEDMETERREADINGDATE TYPE STRING,
ACTUALMETERREADINGDATE TYPE STRING,
ACTUALMETERREADINGTIME TYPE STRING,
MAXIMUMMETERREADINGDATE TYPE STRING,
MAXIMUMMETERREADINGTIME TYPE STRING,
METERREADINGALLOCATIONDATE TYPE STRING,
UTILITIESGASALLOCATIONDATE TYPE STRING,
CTRLMTRREADINGORDERSCHEDLDDATE TYPE STRING,
CTRLMTRREADINGORDERSCHEDLDTIME TYPE STRING,
CONTROLMETERREADINGISPRINTED TYPE STRING,
MTRRDNGACTIVESTATUS TYPE STRING,
INDEPMTRRDNGVALIDATIONCHK TYPE STRING,
DEPDNTMTRRDNGVALIDATIONCHK TYPE STRING,
METERREADERNOTECODE TYPE STRING,
METERREADERNOTEFLLWUPACTN TYPE STRING,
METERREADERCODE TYPE STRING,
METERREADINGBASEPERIODCAT TYPE STRING,
METERREADINGCREATIONDATE TYPE STRING,
METERREADINGCREATEDBYUSER TYPE STRING,
METERREADINGLASTCHANGEDATE TYPE STRING,
METERREADINGLASTCHANGEDBYUSER TYPE STRING,
ADVANCEDMETERINGSYSTEM TYPE STRING,
METERREADINGTRANSFERSTATUS TYPE STRING,
METERREADINGTRANSFERDATETIME TYPE STRING,
ADVNCDMETERINGDATAORIGNTYPE TYPE STRING,
MOBILEMETERREADINGENTRYSYSTEM TYPE STRING,
METERREADINGORDERISOUTPUTTED TYPE STRING,
METERREADINGCHECKDIGIT TYPE STRING,
METERREADINGFASTENTRYNUMBER TYPE STRING,
METERREADINGISRECAPTURED TYPE STRING,
METERREADINGAUTOMMNTRGSTATUS TYPE STRING,
MTRRDNGISSCHDLFORMLTPLORDCRTN TYPE STRING,
MLTPLMTRRDNGORDCRTNCNTRLGROUP TYPE STRING,
MLTPLMTRRDNGREFSCHEDLDDATE TYPE STRING,
ORDERTYPE TYPE STRING,
SERVICEORDER TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ISMETERREADINGDOCUMENTTP_D_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_ISMETERREADINGDOCUMENTTP_D_STR-METERREADINGDOCUMENT sy-vline 
WA_ISMETERREADINGDOCUMENTTP_D_STR-SERIALNUMBER sy-vline 
WA_ISMETERREADINGDOCUMENTTP_D_STR-EQUIPMENT sy-vline 
WA_ISMETERREADINGDOCUMENTTP_D_STR-UTILITIESREGISTER sy-vline 
WA_ISMETERREADINGDOCUMENTTP_D_STR-METERREADINGDATE sy-vline 
WA_ISMETERREADINGDOCUMENTTP_D_STR-METERREADINGTIME sy-vline 
WA_ISMETERREADINGDOCUMENTTP_D_STR-METERREADINGRESULTPREDECIMALS sy-vline 
WA_ISMETERREADINGDOCUMENTTP_D_STR-METERREADINGRESULTDECIMALS sy-vline 
WA_ISMETERREADINGDOCUMENTTP_D_STR-METERREADINGMEASUREMENTUNIT sy-vline 
WA_ISMETERREADINGDOCUMENTTP_D_STR-BLLDMETERREADINGRESULTPREDCMLS sy-vline 
WA_ISMETERREADINGDOCUMENTTP_D_STR-BLLDMETERREADINGRESULTDCMLS sy-vline 
WA_ISMETERREADINGDOCUMENTTP_D_STR-BILLINGMEASUREMENTUNIT sy-vline 
WA_ISMETERREADINGDOCUMENTTP_D_STR-NMBROFUTILSREGDIGITSPREDCMLS sy-vline 
WA_ISMETERREADINGDOCUMENTTP_D_STR-NMBROFUTILSREGDIGITSDCMLS sy-vline 
WA_ISMETERREADINGDOCUMENTTP_D_STR-METERREADINGRESULTVALUE sy-vline 
WA_ISMETERREADINGDOCUMENTTP_D_STR-METERREADINGCONSUMPTIONACTUAL sy-vline 
WA_ISMETERREADINGDOCUMENTTP_D_STR-METERREADINGCONSUMPTIONEXPD sy-vline 
WA_ISMETERREADINGDOCUMENTTP_D_STR-METERREADINGRESULTDIFFERENCE sy-vline 
WA_ISMETERREADINGDOCUMENTTP_D_STR-METERREADINGSYSTEMDATE sy-vline 
WA_ISMETERREADINGDOCUMENTTP_D_STR-METERREADINGORIGINESTIMATION sy-vline 
WA_ISMETERREADINGDOCUMENTTP_D_STR-METERREADINGESTIMATEDVALUE sy-vline 
WA_ISMETERREADINGDOCUMENTTP_D_STR-METERREADINGSTATUS sy-vline 
WA_ISMETERREADINGDOCUMENTTP_D_STR-METERREADINGTYPE sy-vline 
WA_ISMETERREADINGDOCUMENTTP_D_STR-METERREADINGCATEGORY sy-vline 
WA_ISMETERREADINGDOCUMENTTP_D_STR-SCHEDLDMTRREADINGCATEGORY sy-vline 
WA_ISMETERREADINGDOCUMENTTP_D_STR-SCHEDULEDMETERREADINGDATE sy-vline 
WA_ISMETERREADINGDOCUMENTTP_D_STR-ACTUALMETERREADINGDATE sy-vline 
WA_ISMETERREADINGDOCUMENTTP_D_STR-ACTUALMETERREADINGTIME sy-vline 
WA_ISMETERREADINGDOCUMENTTP_D_STR-MAXIMUMMETERREADINGDATE sy-vline 
WA_ISMETERREADINGDOCUMENTTP_D_STR-MAXIMUMMETERREADINGTIME sy-vline 
WA_ISMETERREADINGDOCUMENTTP_D_STR-METERREADINGALLOCATIONDATE sy-vline 
WA_ISMETERREADINGDOCUMENTTP_D_STR-UTILITIESGASALLOCATIONDATE sy-vline 
WA_ISMETERREADINGDOCUMENTTP_D_STR-CTRLMTRREADINGORDERSCHEDLDDATE sy-vline 
WA_ISMETERREADINGDOCUMENTTP_D_STR-CTRLMTRREADINGORDERSCHEDLDTIME sy-vline 
WA_ISMETERREADINGDOCUMENTTP_D_STR-CONTROLMETERREADINGISPRINTED sy-vline 
WA_ISMETERREADINGDOCUMENTTP_D_STR-MTRRDNGACTIVESTATUS sy-vline 
WA_ISMETERREADINGDOCUMENTTP_D_STR-INDEPMTRRDNGVALIDATIONCHK sy-vline 
WA_ISMETERREADINGDOCUMENTTP_D_STR-DEPDNTMTRRDNGVALIDATIONCHK sy-vline 
WA_ISMETERREADINGDOCUMENTTP_D_STR-METERREADERNOTECODE sy-vline 
WA_ISMETERREADINGDOCUMENTTP_D_STR-METERREADERNOTEFLLWUPACTN sy-vline 
WA_ISMETERREADINGDOCUMENTTP_D_STR-METERREADERCODE sy-vline 
WA_ISMETERREADINGDOCUMENTTP_D_STR-METERREADINGBASEPERIODCAT sy-vline 
WA_ISMETERREADINGDOCUMENTTP_D_STR-METERREADINGCREATIONDATE sy-vline 
WA_ISMETERREADINGDOCUMENTTP_D_STR-METERREADINGCREATEDBYUSER sy-vline 
WA_ISMETERREADINGDOCUMENTTP_D_STR-METERREADINGLASTCHANGEDATE sy-vline 
WA_ISMETERREADINGDOCUMENTTP_D_STR-METERREADINGLASTCHANGEDBYUSER sy-vline 
WA_ISMETERREADINGDOCUMENTTP_D_STR-ADVANCEDMETERINGSYSTEM sy-vline 
WA_ISMETERREADINGDOCUMENTTP_D_STR-METERREADINGTRANSFERSTATUS sy-vline 
WA_ISMETERREADINGDOCUMENTTP_D_STR-METERREADINGTRANSFERDATETIME sy-vline 
WA_ISMETERREADINGDOCUMENTTP_D_STR-ADVNCDMETERINGDATAORIGNTYPE sy-vline 
WA_ISMETERREADINGDOCUMENTTP_D_STR-MOBILEMETERREADINGENTRYSYSTEM sy-vline 
WA_ISMETERREADINGDOCUMENTTP_D_STR-METERREADINGORDERISOUTPUTTED sy-vline 
WA_ISMETERREADINGDOCUMENTTP_D_STR-METERREADINGCHECKDIGIT sy-vline 
WA_ISMETERREADINGDOCUMENTTP_D_STR-METERREADINGFASTENTRYNUMBER sy-vline 
WA_ISMETERREADINGDOCUMENTTP_D_STR-METERREADINGISRECAPTURED sy-vline 
WA_ISMETERREADINGDOCUMENTTP_D_STR-METERREADINGAUTOMMNTRGSTATUS sy-vline 
WA_ISMETERREADINGDOCUMENTTP_D_STR-MTRRDNGISSCHDLFORMLTPLORDCRTN sy-vline 
WA_ISMETERREADINGDOCUMENTTP_D_STR-MLTPLMTRRDNGORDCRTNCNTRLGROUP sy-vline 
WA_ISMETERREADINGDOCUMENTTP_D_STR-MLTPLMTRRDNGREFSCHEDLDDATE sy-vline 
WA_ISMETERREADINGDOCUMENTTP_D_STR-ORDERTYPE sy-vline 
WA_ISMETERREADINGDOCUMENTTP_D_STR-SERVICEORDER sy-vline      INTO ld_text SEPARATED BY SPACE.

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