ABAP Select data from SAP table CGDDIM into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CGDDIM
*  INTO TABLE @DATA(IT_CGDDIM2).
*--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_CGDDIM INDEX 1 INTO DATA(WA_CGDDIM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CGDDIM>-APPLC = 1.
<CGDDIM>-FIENM = 1.
<CGDDIM>-BASFI = 1.
<CGDDIM>-RKECA = 1.
<CGDDIM>-RKEVA = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CGDDIM-TXT_M, sy-vline,
  WA_CGDDIM-TXT_S, sy-vline,
  WA_CGDDIM-TXT_R, sy-vline,
  WA_CGDDIM-DTYPE, sy-vline,
  WA_CGDDIM-DIGIT, sy-vline,
  WA_CGDDIM-ILENG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CGDDIM 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_CGDDIM 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_CGDDIM INTO WA_CGDDIM.


*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_CGDDIM-DTYPE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CGDDIM-DTYPE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field UNIT0
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_CGDDIM-UNIT0
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CGDDIM-UNIT0.
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_CGDDIM_STR, 
APPLC TYPE STRING,
FIENM TYPE STRING,
BASFI TYPE STRING,
RKECA TYPE STRING,
RKEVA TYPE STRING,
TXT_M TYPE STRING,
TXT_S TYPE STRING,
TXT_R TYPE STRING,
DTYPE TYPE STRING,
DIGIT TYPE STRING,
ILENG TYPE STRING,
TIMFL TYPE STRING,
CVMRK TYPE STRING,
ROLNM TYPE STRING,
DOMNM TYPE STRING,
CHTAB TYPE STRING,
RETAB TYPE STRING,
REFIE TYPE STRING,
REFIL TYPE STRING,
VIEWN TYPE STRING,
TCDIS TYPE STRING,
TCMOD TYPE STRING,
ATRFB TYPE STRING,
NOVAL TYPE STRING,
VALEX TYPE STRING,
CHTEX TYPE STRING,
FIXVL TYPE STRING,
TIMLC TYPE STRING,
ORTAB TYPE STRING,
ORFIE TYPE STRING,
OAPPL TYPE STRING,
OAFIE TYPE STRING,
FSTA TYPE STRING,
STATX TYPE STRING,
STATICON TYPE STRING,
DIMPR TYPE STRING,
DITXT TYPE STRING,
CMARK TYPE STRING,
QMARK TYPE STRING,
DMARK TYPE STRING,
CUKY0 TYPE STRING,
UNIT0 TYPE STRING,
RFTAB TYPE STRING,
RFFIE TYPE STRING,
REFLL TYPE STRING,
DSRFF TYPE STRING,
CQFIE TYPE STRING,
CQFIETXT_M TYPE STRING,
CQFIETXT_S TYPE STRING,
FIXCU TYPE STRING,
NOCU TYPE STRING,
RFCU TYPE STRING,
AGGDI TYPE STRING,
AGGDITXT TYPE STRING,
AGGTM TYPE STRING,
AGGTMTXT TYPE STRING,
AGGFI TYPE STRING,
AGGFITXT_M TYPE STRING,
AGGFITXT_S TYPE STRING,
PRDEC TYPE STRING,
PRSNT TYPE STRING,
SBGRP TYPE STRING,
SBTXT TYPE STRING,
CCNUM TYPE STRING,
QTEXT TYPE STRING,
DCURR TYPE STRING,
MARK TYPE STRING,
PREFX TYPE STRING,
CHNUM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CGDDIM_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_CGDDIM_STR-APPLC sy-vline 
WA_CGDDIM_STR-FIENM sy-vline 
WA_CGDDIM_STR-BASFI sy-vline 
WA_CGDDIM_STR-RKECA sy-vline 
WA_CGDDIM_STR-RKEVA sy-vline 
WA_CGDDIM_STR-TXT_M sy-vline 
WA_CGDDIM_STR-TXT_S sy-vline 
WA_CGDDIM_STR-TXT_R sy-vline 
WA_CGDDIM_STR-DTYPE sy-vline 
WA_CGDDIM_STR-DIGIT sy-vline 
WA_CGDDIM_STR-ILENG sy-vline 
WA_CGDDIM_STR-TIMFL sy-vline 
WA_CGDDIM_STR-CVMRK sy-vline 
WA_CGDDIM_STR-ROLNM sy-vline 
WA_CGDDIM_STR-DOMNM sy-vline 
WA_CGDDIM_STR-CHTAB sy-vline 
WA_CGDDIM_STR-RETAB sy-vline 
WA_CGDDIM_STR-REFIE sy-vline 
WA_CGDDIM_STR-REFIL sy-vline 
WA_CGDDIM_STR-VIEWN sy-vline 
WA_CGDDIM_STR-TCDIS sy-vline 
WA_CGDDIM_STR-TCMOD sy-vline 
WA_CGDDIM_STR-ATRFB sy-vline 
WA_CGDDIM_STR-NOVAL sy-vline 
WA_CGDDIM_STR-VALEX sy-vline 
WA_CGDDIM_STR-CHTEX sy-vline 
WA_CGDDIM_STR-FIXVL sy-vline 
WA_CGDDIM_STR-TIMLC sy-vline 
WA_CGDDIM_STR-ORTAB sy-vline 
WA_CGDDIM_STR-ORFIE sy-vline 
WA_CGDDIM_STR-OAPPL sy-vline 
WA_CGDDIM_STR-OAFIE sy-vline 
WA_CGDDIM_STR-FSTA sy-vline 
WA_CGDDIM_STR-STATX sy-vline 
WA_CGDDIM_STR-STATICON sy-vline 
WA_CGDDIM_STR-DIMPR sy-vline 
WA_CGDDIM_STR-DITXT sy-vline 
WA_CGDDIM_STR-CMARK sy-vline 
WA_CGDDIM_STR-QMARK sy-vline 
WA_CGDDIM_STR-DMARK sy-vline 
WA_CGDDIM_STR-CUKY0 sy-vline 
WA_CGDDIM_STR-UNIT0 sy-vline 
WA_CGDDIM_STR-RFTAB sy-vline 
WA_CGDDIM_STR-RFFIE sy-vline 
WA_CGDDIM_STR-REFLL sy-vline 
WA_CGDDIM_STR-DSRFF sy-vline 
WA_CGDDIM_STR-CQFIE sy-vline 
WA_CGDDIM_STR-CQFIETXT_M sy-vline 
WA_CGDDIM_STR-CQFIETXT_S sy-vline 
WA_CGDDIM_STR-FIXCU sy-vline 
WA_CGDDIM_STR-NOCU sy-vline 
WA_CGDDIM_STR-RFCU sy-vline 
WA_CGDDIM_STR-AGGDI sy-vline 
WA_CGDDIM_STR-AGGDITXT sy-vline 
WA_CGDDIM_STR-AGGTM sy-vline 
WA_CGDDIM_STR-AGGTMTXT sy-vline 
WA_CGDDIM_STR-AGGFI sy-vline 
WA_CGDDIM_STR-AGGFITXT_M sy-vline 
WA_CGDDIM_STR-AGGFITXT_S sy-vline 
WA_CGDDIM_STR-PRDEC sy-vline 
WA_CGDDIM_STR-PRSNT sy-vline 
WA_CGDDIM_STR-SBGRP sy-vline 
WA_CGDDIM_STR-SBTXT sy-vline 
WA_CGDDIM_STR-CCNUM sy-vline 
WA_CGDDIM_STR-QTEXT sy-vline 
WA_CGDDIM_STR-DCURR sy-vline 
WA_CGDDIM_STR-MARK sy-vline 
WA_CGDDIM_STR-PREFX sy-vline 
WA_CGDDIM_STR-CHNUM sy-vline      INTO ld_text SEPARATED BY SPACE.

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