ABAP Select data from SAP table CMDGFINCR into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CMDGFINCR
*  INTO TABLE @DATA(IT_CMDGFINCR2).
*--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_CMDGFINCR INDEX 1 INTO DATA(WA_CMDGFINCR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CMDGFINCR>-MANDT = 1.
<CMDGFINCR>-MDGOVCHANGEREQUEST = 1.
<CMDGFINCR>-MDGOVCHGREQTYPE = 1.
<CMDGFINCR>-MDGOVEDITION = 1.
<CMDGFINCR>-MDGOVEDITIONSTATUS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CMDGFINCR-MDGOVCHGREQSTATUS, sy-vline,
  WA_CMDGFINCR-MDGOVCHGREQDESCRIPTION, sy-vline,
  WA_CMDGFINCR-CREATIONDATETIME, sy-vline,
  WA_CMDGFINCR-CREATIONDATE, sy-vline,
  WA_CMDGFINCR-CREATEDBYUSER, sy-vline,
  WA_CMDGFINCR-MDGOVCHGREQCHANGEDATETIME, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CMDGFINCR 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_CMDGFINCR 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_CMDGFINCR INTO WA_CMDGFINCR.


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

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

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

*Conversion exit CUNIT, internal->external for field MDGOVCHGREQOVERDUEDAYSUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_CMDGFINCR-MDGOVCHGREQOVERDUEDAYSUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CMDGFINCR-MDGOVCHGREQOVERDUEDAYSUNIT.
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_CMDGFINCR_STR, 
MANDT TYPE STRING,
MDGOVCHANGEREQUEST TYPE STRING,
MDGOVCHGREQTYPE TYPE STRING,
MDGOVEDITION TYPE STRING,
MDGOVEDITIONSTATUS TYPE STRING,
MDGOVCHGREQSTATUS TYPE STRING,
MDGOVCHGREQDESCRIPTION TYPE STRING,
CREATIONDATETIME TYPE STRING,
CREATIONDATE TYPE STRING,
CREATEDBYUSER TYPE STRING,
MDGOVCHGREQCHANGEDATETIME TYPE STRING,
MDGOVCHGREQCHANGEDATE TYPE STRING,
MDGOVCHGREQCHANGEDBYUSER TYPE STRING,
MDGOVCHGREQRELEASEDATETIME TYPE STRING,
MDGOVCHGREQRELEASEDATE TYPE STRING,
MDGOVCHGREQRELEASEDBYUSER TYPE STRING,
MDGOVCHGREQISDRAFT TYPE STRING,
MDGOVCHGREQPRIORITY TYPE STRING,
MDGOVCHGREQDUEDATE TYPE STRING,
MDGOVCHGREQISOVERDUE TYPE STRING,
MDGOVCHGREQOVERDUEDAYS TYPE STRING,
MDGOVCHGREQTYPEANDREASON TYPE STRING,
MDGOVCHGREQTYPEANDRJCNREASON TYPE STRING,
NUMBEROFMDGOVCHANGEREQUESTS TYPE STRING,
MDGOVCHGREQPROCESSINGDURATION TYPE STRING,
MDGOVCHGREQAVGPROCGDURATION TYPE STRING,
MDGOVBUSINESSACTIVITY TYPE STRING,
MDGOVCHGREQGENERALSTATUS TYPE STRING,
MDGOVCHGREQGENSTATUSSORTORDER TYPE STRING,
MDGOVCHGREQGENSTATUSCRITLTY TYPE STRING,
MDGOVCHGREQISCREATEDBYME TYPE STRING,
MDGOVCHGREQISPROCESSEDBYCURUSR TYPE STRING,
MDGOVCHGREQPROCESSINGDAYSUNIT TYPE STRING,
MDGOVCHGREQOVERDUEDAYSUNIT TYPE STRING,
BUSINESSOBJECTTYPE TYPE STRING,
MDGOVLOGICALACTION TYPE STRING,
MDGOVCHGREQHASSINGLEOBJECT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CMDGFINCR_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_CMDGFINCR_STR-MANDT sy-vline 
WA_CMDGFINCR_STR-MDGOVCHANGEREQUEST sy-vline 
WA_CMDGFINCR_STR-MDGOVCHGREQTYPE sy-vline 
WA_CMDGFINCR_STR-MDGOVEDITION sy-vline 
WA_CMDGFINCR_STR-MDGOVEDITIONSTATUS sy-vline 
WA_CMDGFINCR_STR-MDGOVCHGREQSTATUS sy-vline 
WA_CMDGFINCR_STR-MDGOVCHGREQDESCRIPTION sy-vline 
WA_CMDGFINCR_STR-CREATIONDATETIME sy-vline 
WA_CMDGFINCR_STR-CREATIONDATE sy-vline 
WA_CMDGFINCR_STR-CREATEDBYUSER sy-vline 
WA_CMDGFINCR_STR-MDGOVCHGREQCHANGEDATETIME sy-vline 
WA_CMDGFINCR_STR-MDGOVCHGREQCHANGEDATE sy-vline 
WA_CMDGFINCR_STR-MDGOVCHGREQCHANGEDBYUSER sy-vline 
WA_CMDGFINCR_STR-MDGOVCHGREQRELEASEDATETIME sy-vline 
WA_CMDGFINCR_STR-MDGOVCHGREQRELEASEDATE sy-vline 
WA_CMDGFINCR_STR-MDGOVCHGREQRELEASEDBYUSER sy-vline 
WA_CMDGFINCR_STR-MDGOVCHGREQISDRAFT sy-vline 
WA_CMDGFINCR_STR-MDGOVCHGREQPRIORITY sy-vline 
WA_CMDGFINCR_STR-MDGOVCHGREQDUEDATE sy-vline 
WA_CMDGFINCR_STR-MDGOVCHGREQISOVERDUE sy-vline 
WA_CMDGFINCR_STR-MDGOVCHGREQOVERDUEDAYS sy-vline 
WA_CMDGFINCR_STR-MDGOVCHGREQTYPEANDREASON sy-vline 
WA_CMDGFINCR_STR-MDGOVCHGREQTYPEANDRJCNREASON sy-vline 
WA_CMDGFINCR_STR-NUMBEROFMDGOVCHANGEREQUESTS sy-vline 
WA_CMDGFINCR_STR-MDGOVCHGREQPROCESSINGDURATION sy-vline 
WA_CMDGFINCR_STR-MDGOVCHGREQAVGPROCGDURATION sy-vline 
WA_CMDGFINCR_STR-MDGOVBUSINESSACTIVITY sy-vline 
WA_CMDGFINCR_STR-MDGOVCHGREQGENERALSTATUS sy-vline 
WA_CMDGFINCR_STR-MDGOVCHGREQGENSTATUSSORTORDER sy-vline 
WA_CMDGFINCR_STR-MDGOVCHGREQGENSTATUSCRITLTY sy-vline 
WA_CMDGFINCR_STR-MDGOVCHGREQISCREATEDBYME sy-vline 
WA_CMDGFINCR_STR-MDGOVCHGREQISPROCESSEDBYCURUSR sy-vline 
WA_CMDGFINCR_STR-MDGOVCHGREQPROCESSINGDAYSUNIT sy-vline 
WA_CMDGFINCR_STR-MDGOVCHGREQOVERDUEDAYSUNIT sy-vline 
WA_CMDGFINCR_STR-BUSINESSOBJECTTYPE sy-vline 
WA_CMDGFINCR_STR-MDGOVLOGICALACTION sy-vline 
WA_CMDGFINCR_STR-MDGOVCHGREQHASSINGLEOBJECT sy-vline      INTO ld_text SEPARATED BY SPACE.

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