ABAP Select data from SAP table CDIROL into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CDIROL
*  INTO TABLE @DATA(IT_CDIROL2).
*--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_CDIROL INDEX 1 INTO DATA(WA_CDIROL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CDIROL>-ROLNM = 1.
<CDIROL>-DOMNM = 1.
<CDIROL>-DTYPE = 1.
<CDIROL>-ITYPE = 1.
<CDIROL>-DIGIT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CDIROL-ILENG, sy-vline,
  WA_CDIROL-OUTLN, sy-vline,
  WA_CDIROL-DECIM, sy-vline,
  WA_CDIROL-LCASE, sy-vline,
  WA_CDIROL-ENTAB, sy-vline,
  WA_CDIROL-VALEX, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CDIROL 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_CDIROL 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_CDIROL INTO WA_CDIROL.


*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_CDIROL-DTYPE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CDIROL-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_CDIROL_STR, 
ROLNM TYPE STRING,
DOMNM TYPE STRING,
DTYPE TYPE STRING,
ITYPE TYPE STRING,
DIGIT TYPE STRING,
ILENG TYPE STRING,
OUTLN TYPE STRING,
DECIM TYPE STRING,
LCASE TYPE STRING,
ENTAB TYPE STRING,
VALEX TYPE STRING,
CONVX TYPE STRING,
MASK TYPE STRING,
MASKL TYPE STRING,
TXT_S TYPE STRING,
TXT_M TYPE STRING,
TXT_L TYPE STRING,
TXT_R TYPE STRING,
TXT_H TYPE STRING,
MEMID TYPE STRING,
CHDAT TYPE STRING,
CHTIM TYPE STRING,
CHNAM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CDIROL_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_CDIROL_STR-ROLNM sy-vline 
WA_CDIROL_STR-DOMNM sy-vline 
WA_CDIROL_STR-DTYPE sy-vline 
WA_CDIROL_STR-ITYPE sy-vline 
WA_CDIROL_STR-DIGIT sy-vline 
WA_CDIROL_STR-ILENG sy-vline 
WA_CDIROL_STR-OUTLN sy-vline 
WA_CDIROL_STR-DECIM sy-vline 
WA_CDIROL_STR-LCASE sy-vline 
WA_CDIROL_STR-ENTAB sy-vline 
WA_CDIROL_STR-VALEX sy-vline 
WA_CDIROL_STR-CONVX sy-vline 
WA_CDIROL_STR-MASK sy-vline 
WA_CDIROL_STR-MASKL sy-vline 
WA_CDIROL_STR-TXT_S sy-vline 
WA_CDIROL_STR-TXT_M sy-vline 
WA_CDIROL_STR-TXT_L sy-vline 
WA_CDIROL_STR-TXT_R sy-vline 
WA_CDIROL_STR-TXT_H sy-vline 
WA_CDIROL_STR-MEMID sy-vline 
WA_CDIROL_STR-CHDAT sy-vline 
WA_CDIROL_STR-CHTIM sy-vline 
WA_CDIROL_STR-CHNAM sy-vline      INTO ld_text SEPARATED BY SPACE.

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