ABAP Select data from SAP table CEBILLGDOCMRDATA into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CEBILLGDOCMRDATA
*  INTO TABLE @DATA(IT_CEBILLGDOCMRDATA2).
*--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_CEBILLGDOCMRDATA INDEX 1 INTO DATA(WA_CEBILLGDOCMRDATA2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CEBILLGDOCMRDATA>-MANDT = 1.
<CEBILLGDOCMRDATA>-UTILITIESBILLINGDOCUMENT = 1.
<CEBILLGDOCMRDATA>-METERREADINGDOCUMENT = 1.
<CEBILLGDOCMRDATA>-BILLINGMEASUREMENTUNIT = 1.
<CEBILLGDOCMRDATA>-UTILITIESDEVICE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CEBILLGDOCMRDATA-UTILITIESDEVICECATEGORY, sy-vline,
  WA_CEBILLGDOCMRDATA-UTILSDEVICECATEGORYDESCRIPTION, sy-vline,
  WA_CEBILLGDOCMRDATA-UTILITIESREGISTER, sy-vline,
  WA_CEBILLGDOCMRDATA-NMBROFUTILSREGDIGITSDCMLS, sy-vline,
  WA_CEBILLGDOCMRDATA-NMBROFUTILSREGDIGITSPREDCMLS, sy-vline,
  WA_CEBILLGDOCMRDATA-UTILITIESREGISTERTYPE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CEBILLGDOCMRDATA 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_CEBILLGDOCMRDATA 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_CEBILLGDOCMRDATA INTO WA_CEBILLGDOCMRDATA.


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

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

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

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field UTILITIESINSTALLATION
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CEBILLGDOCMRDATA-UTILITIESINSTALLATION
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CEBILLGDOCMRDATA-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_CEBILLGDOCMRDATA_STR, 
MANDT TYPE STRING,
UTILITIESBILLINGDOCUMENT TYPE STRING,
METERREADINGDOCUMENT TYPE STRING,
BILLINGMEASUREMENTUNIT TYPE STRING,
UTILITIESDEVICE TYPE STRING,
UTILITIESDEVICECATEGORY TYPE STRING,
UTILSDEVICECATEGORYDESCRIPTION TYPE STRING,
UTILITIESREGISTER TYPE STRING,
NMBROFUTILSREGDIGITSDCMLS TYPE STRING,
NMBROFUTILSREGDIGITSPREDCMLS TYPE STRING,
UTILITIESREGISTERTYPE TYPE STRING,
SCHEDULEDMETERREADINGDATE TYPE STRING,
METERREADINGDATE TYPE STRING,
METERREADINGREASON TYPE STRING,
METERREADINGTYPE TYPE STRING,
METERREADINGRESULTVALUE TYPE STRING,
METERREADINGMEASUREMENTUNIT TYPE STRING,
METERREADINGRESULTDIFFERENCE TYPE STRING,
NMBROFLINEITEMCNVRSNFCTR TYPE STRING,
METERREADINGSTATUS TYPE STRING,
UTILSBILLGDOCMTRRDNGQUANTITY TYPE STRING,
EQUIPMENT TYPE STRING,
UTILITIESREGISTERCATEGORY TYPE STRING,
SERIALNUMBER TYPE STRING,
UTILITIESINSTALLATION TYPE STRING,
METERREADINGTIME TYPE STRING,
UTILITIESOBJECTIDNSYSTEMCODE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CEBILLGDOCMRDATA_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_CEBILLGDOCMRDATA_STR-MANDT sy-vline 
WA_CEBILLGDOCMRDATA_STR-UTILITIESBILLINGDOCUMENT sy-vline 
WA_CEBILLGDOCMRDATA_STR-METERREADINGDOCUMENT sy-vline 
WA_CEBILLGDOCMRDATA_STR-BILLINGMEASUREMENTUNIT sy-vline 
WA_CEBILLGDOCMRDATA_STR-UTILITIESDEVICE sy-vline 
WA_CEBILLGDOCMRDATA_STR-UTILITIESDEVICECATEGORY sy-vline 
WA_CEBILLGDOCMRDATA_STR-UTILSDEVICECATEGORYDESCRIPTION sy-vline 
WA_CEBILLGDOCMRDATA_STR-UTILITIESREGISTER sy-vline 
WA_CEBILLGDOCMRDATA_STR-NMBROFUTILSREGDIGITSDCMLS sy-vline 
WA_CEBILLGDOCMRDATA_STR-NMBROFUTILSREGDIGITSPREDCMLS sy-vline 
WA_CEBILLGDOCMRDATA_STR-UTILITIESREGISTERTYPE sy-vline 
WA_CEBILLGDOCMRDATA_STR-SCHEDULEDMETERREADINGDATE sy-vline 
WA_CEBILLGDOCMRDATA_STR-METERREADINGDATE sy-vline 
WA_CEBILLGDOCMRDATA_STR-METERREADINGREASON sy-vline 
WA_CEBILLGDOCMRDATA_STR-METERREADINGTYPE sy-vline 
WA_CEBILLGDOCMRDATA_STR-METERREADINGRESULTVALUE sy-vline 
WA_CEBILLGDOCMRDATA_STR-METERREADINGMEASUREMENTUNIT sy-vline 
WA_CEBILLGDOCMRDATA_STR-METERREADINGRESULTDIFFERENCE sy-vline 
WA_CEBILLGDOCMRDATA_STR-NMBROFLINEITEMCNVRSNFCTR sy-vline 
WA_CEBILLGDOCMRDATA_STR-METERREADINGSTATUS sy-vline 
WA_CEBILLGDOCMRDATA_STR-UTILSBILLGDOCMTRRDNGQUANTITY sy-vline 
WA_CEBILLGDOCMRDATA_STR-EQUIPMENT sy-vline 
WA_CEBILLGDOCMRDATA_STR-UTILITIESREGISTERCATEGORY sy-vline 
WA_CEBILLGDOCMRDATA_STR-SERIALNUMBER sy-vline 
WA_CEBILLGDOCMRDATA_STR-UTILITIESINSTALLATION sy-vline 
WA_CEBILLGDOCMRDATA_STR-METERREADINGTIME sy-vline 
WA_CEBILLGDOCMRDATA_STR-UTILITIESOBJECTIDNSYSTEMCODE sy-vline      INTO ld_text SEPARATED BY SPACE.

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