ABAP Select data from SAP table CDIDEP into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CDIDEP
*  INTO TABLE @DATA(IT_CDIDEP2).
*--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_CDIDEP INDEX 1 INTO DATA(WA_CDIDEP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CDIDEP>-FIENM = 1.
<CDIDEP>-POSIT = 1.
<CDIDEP>-DPFIE = 1.
<CDIDEP>-FIXVL = 1.
<CDIDEP>-TIMLC = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CDIDEP-TXT_M, sy-vline,
  WA_CDIDEP-DOMNM, sy-vline,
  WA_CDIDEP-DTYPE, sy-vline,
  WA_CDIDEP-ITYPE, sy-vline,
  WA_CDIDEP-ILENG, sy-vline,
  WA_CDIDEP-DIGIT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CDIDEP 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_CDIDEP 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_CDIDEP INTO WA_CDIDEP.


*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 DTYPE, internal->external for field DTYPE
CALL FUNCTION 'CONVERSION_EXIT_DTYPE_OUTPUT'
  EXPORTING
    input =                      WA_CDIDEP-DTYPE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CDIDEP-DTYPE.
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_CDIDEP_STR, 
FIENM TYPE STRING,
POSIT TYPE STRING,
DPFIE TYPE STRING,
FIXVL TYPE STRING,
TIMLC TYPE STRING,
TXT_M TYPE STRING,
DOMNM TYPE STRING,
DTYPE TYPE STRING,
ITYPE TYPE STRING,
ILENG TYPE STRING,
DIGIT TYPE STRING,
OUTLN TYPE STRING,
CVMRK TYPE STRING,
CONVX TYPE STRING,
MASK TYPE STRING,
MASKL TYPE STRING,
CHTAB TYPE STRING,
CHFIE TYPE STRING,
VALEX TYPE STRING,
MARK TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CDIDEP_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_CDIDEP_STR-FIENM sy-vline 
WA_CDIDEP_STR-POSIT sy-vline 
WA_CDIDEP_STR-DPFIE sy-vline 
WA_CDIDEP_STR-FIXVL sy-vline 
WA_CDIDEP_STR-TIMLC sy-vline 
WA_CDIDEP_STR-TXT_M sy-vline 
WA_CDIDEP_STR-DOMNM sy-vline 
WA_CDIDEP_STR-DTYPE sy-vline 
WA_CDIDEP_STR-ITYPE sy-vline 
WA_CDIDEP_STR-ILENG sy-vline 
WA_CDIDEP_STR-DIGIT sy-vline 
WA_CDIDEP_STR-OUTLN sy-vline 
WA_CDIDEP_STR-CVMRK sy-vline 
WA_CDIDEP_STR-CONVX sy-vline 
WA_CDIDEP_STR-MASK sy-vline 
WA_CDIDEP_STR-MASKL sy-vline 
WA_CDIDEP_STR-CHTAB sy-vline 
WA_CDIDEP_STR-CHFIE sy-vline 
WA_CDIDEP_STR-VALEX sy-vline 
WA_CDIDEP_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.