ABAP Select data from SAP table CMAC_TOTAL_03S into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP CMAC_TOTAL_03S 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_TOTAL_03S. 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_TOTAL_03S 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_TOTAL_03S TYPE STANDARD TABLE OF CMAC_TOTAL_03S,
      WA_CMAC_TOTAL_03S TYPE CMAC_TOTAL_03S,
      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_TOTAL_03S> TYPE CMAC_TOTAL_03S.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_CMAC_TOTAL_03S.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM CMAC_TOTAL_03S
  INTO TABLE IT_CMAC_TOTAL_03S.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CMAC_TOTAL_03S
*  INTO TABLE @DATA(IT_CMAC_TOTAL_03S2).
*--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_TOTAL_03S INDEX 1 INTO DATA(WA_CMAC_TOTAL_03S2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_CMAC_TOTAL_03S ASSIGNING <CMAC_TOTAL_03S>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CMAC_TOTAL_03S>-MANDT = 1.
<CMAC_TOTAL_03S>-FEEPROC = 1.
<CMAC_TOTAL_03S>-FSTEP = 1.
<CMAC_TOTAL_03S>-TEXT = 1.
<CMAC_TOTAL_03S>-SELEMENTS = 1.

ENDLOOP.

LOOP AT IT_CMAC_TOTAL_03S INTO WA_CMAC_TOTAL_03S.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CMAC_TOTAL_03S-FCALCRULE, sy-vline,
  WA_CMAC_TOTAL_03S-CALID, sy-vline,
  WA_CMAC_TOTAL_03S-TIMELIMITUP, sy-vline,
  WA_CMAC_TOTAL_03S-OVPERIOD, sy-vline,
  WA_CMAC_TOTAL_03S-ENDPROC, sy-vline,
  WA_CMAC_TOTAL_03S-ACTION, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CMAC_TOTAL_03S 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_TOTAL_03S 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_TOTAL_03S INTO WA_CMAC_TOTAL_03S.


*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_TOTAL_03S_STR, 
MANDT TYPE STRING,
FEEPROC TYPE STRING,
FSTEP TYPE STRING,
TEXT TYPE STRING,
SELEMENTS TYPE STRING,
FCALCRULE TYPE STRING,
CALID TYPE STRING,
TIMELIMITUP TYPE STRING,
OVPERIOD TYPE STRING,
ENDPROC TYPE STRING,
ACTION TYPE STRING,
MARK TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CMAC_TOTAL_03S_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_TOTAL_03S_STR-MANDT sy-vline 
WA_CMAC_TOTAL_03S_STR-FEEPROC sy-vline 
WA_CMAC_TOTAL_03S_STR-FSTEP sy-vline 
WA_CMAC_TOTAL_03S_STR-TEXT sy-vline 
WA_CMAC_TOTAL_03S_STR-SELEMENTS sy-vline 
WA_CMAC_TOTAL_03S_STR-FCALCRULE sy-vline 
WA_CMAC_TOTAL_03S_STR-CALID sy-vline 
WA_CMAC_TOTAL_03S_STR-TIMELIMITUP sy-vline 
WA_CMAC_TOTAL_03S_STR-OVPERIOD sy-vline 
WA_CMAC_TOTAL_03S_STR-ENDPROC sy-vline 
WA_CMAC_TOTAL_03S_STR-ACTION sy-vline 
WA_CMAC_TOTAL_03S_STR-MARK sy-vline      INTO ld_text SEPARATED BY SPACE.

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