ABAP Select data from SAP table CECUFM into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CECUFM
*  INTO TABLE @DATA(IT_CECUFM2).
*--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_CECUFM INDEX 1 INTO DATA(WA_CECUFM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CECUFM>-MANDT = 1.
<CECUFM>-DSINT = 1.
<CECUFM>-GRNAM = 1.
<CECUFM>-BNAME = 1.
<CECUFM>-ADZHL = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CECUFM-DATUV, sy-vline,
  WA_CECUFM-LINE, sy-vline,
  WA_CECUFM-WHAT, sy-vline,
  WA_CECUFM-SROW, sy-vline,
  WA_CECUFM-EROW, sy-vline,
  WA_CECUFM-FMLEN, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CECUFM 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_CECUFM 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_CECUFM INTO WA_CECUFM.


*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 ATINN, internal->external for field ATINN
CALL FUNCTION 'CONVERSION_EXIT_ATINN_OUTPUT'
  EXPORTING
    input =                      WA_CECUFM-ATINN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CECUFM-ATINN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ATINN, internal->external for field OMERK
CALL FUNCTION 'CONVERSION_EXIT_ATINN_OUTPUT'
  EXPORTING
    input =                      WA_CECUFM-OMERK
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CECUFM-OMERK.
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_CECUFM_STR, 
MANDT TYPE STRING,
DSINT TYPE STRING,
GRNAM TYPE STRING,
BNAME TYPE STRING,
ADZHL TYPE STRING,
DATUV TYPE STRING,
LINE TYPE STRING,
WHAT TYPE STRING,
SROW TYPE STRING,
EROW TYPE STRING,
FMLEN TYPE STRING,
ATINN TYPE STRING,
OMERK TYPE STRING,
NEWL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CECUFM_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_CECUFM_STR-MANDT sy-vline 
WA_CECUFM_STR-DSINT sy-vline 
WA_CECUFM_STR-GRNAM sy-vline 
WA_CECUFM_STR-BNAME sy-vline 
WA_CECUFM_STR-ADZHL sy-vline 
WA_CECUFM_STR-DATUV sy-vline 
WA_CECUFM_STR-LINE sy-vline 
WA_CECUFM_STR-WHAT sy-vline 
WA_CECUFM_STR-SROW sy-vline 
WA_CECUFM_STR-EROW sy-vline 
WA_CECUFM_STR-FMLEN sy-vline 
WA_CECUFM_STR-ATINN sy-vline 
WA_CECUFM_STR-OMERK sy-vline 
WA_CECUFM_STR-NEWL sy-vline      INTO ld_text SEPARATED BY SPACE.

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