ABAP Select data from SAP table CMAC_FEE_WITH_DUEDATE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CMAC_FEE_WITH_DUEDATE
*  INTO TABLE @DATA(IT_CMAC_FEE_WITH_DUEDATE2).
*--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_CMAC_FEE_WITH_DUEDATE INDEX 1 INTO DATA(WA_CMAC_FEE_WITH_DUEDATE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CMAC_FEE_WITH_DUEDATE>-BUKRS = 1.
<CMAC_FEE_WITH_DUEDATE>-GSBER = 1.
<CMAC_FEE_WITH_DUEDATE>-ACTKEY = 1.
<CMAC_FEE_WITH_DUEDATE>-ACTKEY2 = 1.
<CMAC_FEE_WITH_DUEDATE>-PSGRP = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CMAC_FEE_WITH_DUEDATE-DUEDATE, sy-vline,
  WA_CMAC_FEE_WITH_DUEDATE-COAREA, sy-vline,
  WA_CMAC_FEE_WITH_DUEDATE-COSTCTR, sy-vline,
  WA_CMAC_FEE_WITH_DUEDATE-COORDER, sy-vline,
  WA_CMAC_FEE_WITH_DUEDATE-WBSELEM, sy-vline,
  WA_CMAC_FEE_WITH_DUEDATE-PROFIT_CTR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CMAC_FEE_WITH_DUEDATE 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_CMAC_FEE_WITH_DUEDATE 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_CMAC_FEE_WITH_DUEDATE INTO WA_CMAC_FEE_WITH_DUEDATE.


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

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

*Conversion exit ABPSP, internal->external for field WBSELEM
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_CMAC_FEE_WITH_DUEDATE-WBSELEM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CMAC_FEE_WITH_DUEDATE-WBSELEM.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit FMCIL, internal->external for field FIPEX
CALL FUNCTION 'CONVERSION_EXIT_FMCIL_OUTPUT'
  EXPORTING
    input =                      WA_CMAC_FEE_WITH_DUEDATE-FIPEX
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CMAC_FEE_WITH_DUEDATE-FIPEX.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit GJAHR, internal->external for field BUDGETYEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_CMAC_FEE_WITH_DUEDATE-BUDGETYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CMAC_FEE_WITH_DUEDATE-BUDGETYEAR.
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_CMAC_FEE_WITH_DUEDATE_STR, 
BUKRS TYPE STRING,
GSBER TYPE STRING,
ACTKEY TYPE STRING,
ACTKEY2 TYPE STRING,
PSGRP TYPE STRING,
DUEDATE TYPE STRING,
COAREA TYPE STRING,
COSTCTR TYPE STRING,
COORDER TYPE STRING,
WBSELEM TYPE STRING,
PROFIT_CTR TYPE STRING,
SEGMENT TYPE STRING,
ORIGFIKRS TYPE STRING,
FIPEX TYPE STRING,
FISTL TYPE STRING,
FONDS TYPE STRING,
FKBER TYPE STRING,
MEASURE TYPE STRING,
GRANT_NBR TYPE STRING,
BUDGETYEAR TYPE STRING,
BUDGET_PD TYPE STRING,
DOCAMT TYPE STRING,
DOCCUKY TYPE STRING,
LOCAMT TYPE STRING,
LOCCUKY TYPE STRING,
OPTXT TYPE STRING,
OLDITEM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CMAC_FEE_WITH_DUEDATE_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_CMAC_FEE_WITH_DUEDATE_STR-BUKRS sy-vline 
WA_CMAC_FEE_WITH_DUEDATE_STR-GSBER sy-vline 
WA_CMAC_FEE_WITH_DUEDATE_STR-ACTKEY sy-vline 
WA_CMAC_FEE_WITH_DUEDATE_STR-ACTKEY2 sy-vline 
WA_CMAC_FEE_WITH_DUEDATE_STR-PSGRP sy-vline 
WA_CMAC_FEE_WITH_DUEDATE_STR-DUEDATE sy-vline 
WA_CMAC_FEE_WITH_DUEDATE_STR-COAREA sy-vline 
WA_CMAC_FEE_WITH_DUEDATE_STR-COSTCTR sy-vline 
WA_CMAC_FEE_WITH_DUEDATE_STR-COORDER sy-vline 
WA_CMAC_FEE_WITH_DUEDATE_STR-WBSELEM sy-vline 
WA_CMAC_FEE_WITH_DUEDATE_STR-PROFIT_CTR sy-vline 
WA_CMAC_FEE_WITH_DUEDATE_STR-SEGMENT sy-vline 
WA_CMAC_FEE_WITH_DUEDATE_STR-ORIGFIKRS sy-vline 
WA_CMAC_FEE_WITH_DUEDATE_STR-FIPEX sy-vline 
WA_CMAC_FEE_WITH_DUEDATE_STR-FISTL sy-vline 
WA_CMAC_FEE_WITH_DUEDATE_STR-FONDS sy-vline 
WA_CMAC_FEE_WITH_DUEDATE_STR-FKBER sy-vline 
WA_CMAC_FEE_WITH_DUEDATE_STR-MEASURE sy-vline 
WA_CMAC_FEE_WITH_DUEDATE_STR-GRANT_NBR sy-vline 
WA_CMAC_FEE_WITH_DUEDATE_STR-BUDGETYEAR sy-vline 
WA_CMAC_FEE_WITH_DUEDATE_STR-BUDGET_PD sy-vline 
WA_CMAC_FEE_WITH_DUEDATE_STR-DOCAMT sy-vline 
WA_CMAC_FEE_WITH_DUEDATE_STR-DOCCUKY sy-vline 
WA_CMAC_FEE_WITH_DUEDATE_STR-LOCAMT sy-vline 
WA_CMAC_FEE_WITH_DUEDATE_STR-LOCCUKY sy-vline 
WA_CMAC_FEE_WITH_DUEDATE_STR-OPTXT sy-vline 
WA_CMAC_FEE_WITH_DUEDATE_STR-OLDITEM sy-vline      INTO ld_text SEPARATED BY SPACE.

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