ABAP Select data from SAP table COD_UTILITIES_MR_OVW_S into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM COD_UTILITIES_MR_OVW_S
*  INTO TABLE @DATA(IT_COD_UTILITIES_MR_OVW_S2).
*--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_COD_UTILITIES_MR_OVW_S INDEX 1 INTO DATA(WA_COD_UTILITIES_MR_OVW_S2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<COD_UTILITIES_MR_OVW_S>-MATERIAL = 1.
<COD_UTILITIES_MR_OVW_S>-SERIALNO = 1.
<COD_UTILITIES_MR_OVW_S>-REGISTER = 1.
<COD_UTILITIES_MR_OVW_S>-DEVICE = 1.
<COD_UTILITIES_MR_OVW_S>-MRREASON = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_COD_UTILITIES_MR_OVW_S-MRREASON_TEXT, sy-vline,
  WA_COD_UTILITIES_MR_OVW_S-MRIDNUMBER, sy-vline,
  WA_COD_UTILITIES_MR_OVW_S-READINGRESULT, sy-vline,
  WA_COD_UTILITIES_MR_OVW_S-MRUOM, sy-vline,
  WA_COD_UTILITIES_MR_OVW_S-METERREADINGNOTE, sy-vline,
  WA_COD_UTILITIES_MR_OVW_S-MRNOTE_TEXT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_COD_UTILITIES_MR_OVW_S 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_COD_UTILITIES_MR_OVW_S 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_COD_UTILITIES_MR_OVW_S INTO WA_COD_UTILITIES_MR_OVW_S.


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

*Conversion exit TPLNR, internal->external for field CONNECTION_OBJ
CALL FUNCTION 'CONVERSION_EXIT_TPLNR_OUTPUT'
  EXPORTING
    input =                      WA_COD_UTILITIES_MR_OVW_S-CONNECTION_OBJ
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_COD_UTILITIES_MR_OVW_S-CONNECTION_OBJ.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PREMISE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_COD_UTILITIES_MR_OVW_S-PREMISE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_COD_UTILITIES_MR_OVW_S-PREMISE.
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_COD_UTILITIES_MR_OVW_S_STR, 
MATERIAL TYPE STRING,
SERIALNO TYPE STRING,
REGISTER TYPE STRING,
DEVICE TYPE STRING,
MRREASON TYPE STRING,
MRREASON_TEXT TYPE STRING,
MRIDNUMBER TYPE STRING,
READINGRESULT TYPE STRING,
MRUOM TYPE STRING,
METERREADINGNOTE TYPE STRING,
MRNOTE_TEXT TYPE STRING,
ACTUALSAPMRTYPE TYPE STRING,
ACTUALCUSTOMERMRTYPE TYPE STRING,
METERREADER TYPE STRING,
MRDATEFORBILLING TYPE STRING,
MRTIMEFORBILLING TYPE STRING,
ACTUALMRDATE TYPE STRING,
ACTUALMRTIME TYPE STRING,
MRDATEOFMAXIMUM TYPE STRING,
MRTIMEOFMAXIMUM TYPE STRING,
SMORDER TYPE STRING,
ACTIVE TYPE STRING,
REFNUMBER TYPE STRING,
TARGETMRDATE TYPE STRING,
MRDATEFORIDENTIF TYPE STRING,
DIVISION TYPE STRING,
DIVISION_TEXT TYPE STRING,
STATUS TYPE STRING,
CONTRACT TYPE STRING,
CONTRACT_ACCOUNT TYPE STRING,
INSTALLATION TYPE STRING,
CONNECTION_OBJ TYPE STRING,
CON_OBJ_ADDR TYPE STRING,
PREMISE TYPE STRING,
PREMISE_ADDR TYPE STRING,
POD TYPE STRING,
ESTIMATIONPROCEDURE TYPE STRING,
ESTIMATIONREASON TYPE STRING,
EST_REASON_TEXT TYPE STRING,
METERREADINGSTATUS TYPE STRING,
MRSTATUS_TEXT TYPE STRING,
CREATED_ON TYPE STRING,
CREATED_BY TYPE STRING,
CHANGED_ON TYPE STRING,
CHANGED_BY TYPE STRING,
EXPECTED_CONSUMPTION TYPE STRING,
CONSUMPTION TYPE STRING,
PREVIOUS_MR TYPE STRING,
OPCODE TYPE STRING,
OPCODETXT TYPE STRING,
AMI_METER TYPE STRING,END OF T_EKKO_STR.
DATA: WA_COD_UTILITIES_MR_OVW_S_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_COD_UTILITIES_MR_OVW_S_STR-MATERIAL sy-vline 
WA_COD_UTILITIES_MR_OVW_S_STR-SERIALNO sy-vline 
WA_COD_UTILITIES_MR_OVW_S_STR-REGISTER sy-vline 
WA_COD_UTILITIES_MR_OVW_S_STR-DEVICE sy-vline 
WA_COD_UTILITIES_MR_OVW_S_STR-MRREASON sy-vline 
WA_COD_UTILITIES_MR_OVW_S_STR-MRREASON_TEXT sy-vline 
WA_COD_UTILITIES_MR_OVW_S_STR-MRIDNUMBER sy-vline 
WA_COD_UTILITIES_MR_OVW_S_STR-READINGRESULT sy-vline 
WA_COD_UTILITIES_MR_OVW_S_STR-MRUOM sy-vline 
WA_COD_UTILITIES_MR_OVW_S_STR-METERREADINGNOTE sy-vline 
WA_COD_UTILITIES_MR_OVW_S_STR-MRNOTE_TEXT sy-vline 
WA_COD_UTILITIES_MR_OVW_S_STR-ACTUALSAPMRTYPE sy-vline 
WA_COD_UTILITIES_MR_OVW_S_STR-ACTUALCUSTOMERMRTYPE sy-vline 
WA_COD_UTILITIES_MR_OVW_S_STR-METERREADER sy-vline 
WA_COD_UTILITIES_MR_OVW_S_STR-MRDATEFORBILLING sy-vline 
WA_COD_UTILITIES_MR_OVW_S_STR-MRTIMEFORBILLING sy-vline 
WA_COD_UTILITIES_MR_OVW_S_STR-ACTUALMRDATE sy-vline 
WA_COD_UTILITIES_MR_OVW_S_STR-ACTUALMRTIME sy-vline 
WA_COD_UTILITIES_MR_OVW_S_STR-MRDATEOFMAXIMUM sy-vline 
WA_COD_UTILITIES_MR_OVW_S_STR-MRTIMEOFMAXIMUM sy-vline 
WA_COD_UTILITIES_MR_OVW_S_STR-SMORDER sy-vline 
WA_COD_UTILITIES_MR_OVW_S_STR-ACTIVE sy-vline 
WA_COD_UTILITIES_MR_OVW_S_STR-REFNUMBER sy-vline 
WA_COD_UTILITIES_MR_OVW_S_STR-TARGETMRDATE sy-vline 
WA_COD_UTILITIES_MR_OVW_S_STR-MRDATEFORIDENTIF sy-vline 
WA_COD_UTILITIES_MR_OVW_S_STR-DIVISION sy-vline 
WA_COD_UTILITIES_MR_OVW_S_STR-DIVISION_TEXT sy-vline 
WA_COD_UTILITIES_MR_OVW_S_STR-STATUS sy-vline 
WA_COD_UTILITIES_MR_OVW_S_STR-CONTRACT sy-vline 
WA_COD_UTILITIES_MR_OVW_S_STR-CONTRACT_ACCOUNT sy-vline 
WA_COD_UTILITIES_MR_OVW_S_STR-INSTALLATION sy-vline 
WA_COD_UTILITIES_MR_OVW_S_STR-CONNECTION_OBJ sy-vline 
WA_COD_UTILITIES_MR_OVW_S_STR-CON_OBJ_ADDR sy-vline 
WA_COD_UTILITIES_MR_OVW_S_STR-PREMISE sy-vline 
WA_COD_UTILITIES_MR_OVW_S_STR-PREMISE_ADDR sy-vline 
WA_COD_UTILITIES_MR_OVW_S_STR-POD sy-vline 
WA_COD_UTILITIES_MR_OVW_S_STR-ESTIMATIONPROCEDURE sy-vline 
WA_COD_UTILITIES_MR_OVW_S_STR-ESTIMATIONREASON sy-vline 
WA_COD_UTILITIES_MR_OVW_S_STR-EST_REASON_TEXT sy-vline 
WA_COD_UTILITIES_MR_OVW_S_STR-METERREADINGSTATUS sy-vline 
WA_COD_UTILITIES_MR_OVW_S_STR-MRSTATUS_TEXT sy-vline 
WA_COD_UTILITIES_MR_OVW_S_STR-CREATED_ON sy-vline 
WA_COD_UTILITIES_MR_OVW_S_STR-CREATED_BY sy-vline 
WA_COD_UTILITIES_MR_OVW_S_STR-CHANGED_ON sy-vline 
WA_COD_UTILITIES_MR_OVW_S_STR-CHANGED_BY sy-vline 
WA_COD_UTILITIES_MR_OVW_S_STR-EXPECTED_CONSUMPTION sy-vline 
WA_COD_UTILITIES_MR_OVW_S_STR-CONSUMPTION sy-vline 
WA_COD_UTILITIES_MR_OVW_S_STR-PREVIOUS_MR sy-vline 
WA_COD_UTILITIES_MR_OVW_S_STR-OPCODE sy-vline 
WA_COD_UTILITIES_MR_OVW_S_STR-OPCODETXT sy-vline 
WA_COD_UTILITIES_MR_OVW_S_STR-AMI_METER sy-vline      INTO ld_text SEPARATED BY SPACE.

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