ABAP Select data from SAP table CMAC_S_FEE_TREE into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP CMAC_S_FEE_TREE 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_S_FEE_TREE. 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_S_FEE_TREE 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_S_FEE_TREE TYPE STANDARD TABLE OF CMAC_S_FEE_TREE,
      WA_CMAC_S_FEE_TREE TYPE CMAC_S_FEE_TREE,
      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_S_FEE_TREE> TYPE CMAC_S_FEE_TREE.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CMAC_S_FEE_TREE
*  INTO TABLE @DATA(IT_CMAC_S_FEE_TREE2).
*--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_S_FEE_TREE INDEX 1 INTO DATA(WA_CMAC_S_FEE_TREE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CMAC_S_FEE_TREE>-FSTEP = 1.
<CMAC_S_FEE_TREE>-FCALCRULE = 1.
<CMAC_S_FEE_TREE>-PRIPROC = 1.
<CMAC_S_FEE_TREE>-OTYPE = 1.
<CMAC_S_FEE_TREE>-TIMELIMITUP = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CMAC_S_FEE_TREE-CALID, sy-vline,
  WA_CMAC_S_FEE_TREE-OVPERIOD, sy-vline,
  WA_CMAC_S_FEE_TREE-ENDPROC, sy-vline,
  WA_CMAC_S_FEE_TREE-PNTME, sy-vline,
  WA_CMAC_S_FEE_TREE-PNTUP, sy-vline,
  WA_CMAC_S_FEE_TREE-PNTDOWN, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CMAC_S_FEE_TREE 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_S_FEE_TREE 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_S_FEE_TREE INTO WA_CMAC_S_FEE_TREE.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_CMAC_S_FEE_TREE_STR, 
FSTEP TYPE STRING,
FCALCRULE TYPE STRING,
PRIPROC TYPE STRING,
OTYPE TYPE STRING,
TIMELIMITUP TYPE STRING,
CALID TYPE STRING,
OVPERIOD TYPE STRING,
ENDPROC TYPE STRING,
PNTME TYPE STRING,
PNTUP TYPE STRING,
PNTDOWN TYPE STRING,
PNTNEXT TYPE STRING,
T_FEE_RESULT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CMAC_S_FEE_TREE_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_S_FEE_TREE_STR-FSTEP sy-vline 
WA_CMAC_S_FEE_TREE_STR-FCALCRULE sy-vline 
WA_CMAC_S_FEE_TREE_STR-PRIPROC sy-vline 
WA_CMAC_S_FEE_TREE_STR-OTYPE sy-vline 
WA_CMAC_S_FEE_TREE_STR-TIMELIMITUP sy-vline 
WA_CMAC_S_FEE_TREE_STR-CALID sy-vline 
WA_CMAC_S_FEE_TREE_STR-OVPERIOD sy-vline 
WA_CMAC_S_FEE_TREE_STR-ENDPROC sy-vline 
WA_CMAC_S_FEE_TREE_STR-PNTME sy-vline 
WA_CMAC_S_FEE_TREE_STR-PNTUP sy-vline 
WA_CMAC_S_FEE_TREE_STR-PNTDOWN sy-vline 
WA_CMAC_S_FEE_TREE_STR-PNTNEXT sy-vline 
WA_CMAC_S_FEE_TREE_STR-T_FEE_RESULT sy-vline      INTO ld_text SEPARATED BY SPACE.

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