ABAP Select data from SAP table CEFLD into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CEFLD
*  INTO TABLE @DATA(IT_CEFLD2).
*--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_CEFLD INDEX 1 INTO DATA(WA_CEFLD2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CEFLD>-EWSKZ = 1.
<CEFLD>-USGFL = 1.
<CEFLD>-TIMFL = 1.
<CEFLD>-CHFIE = 1.
<CEFLD>-FIXVL = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CEFLD-TIMLC, sy-vline,
  WA_CEFLD-TXTAB, sy-vline,
  WA_CEFLD-REFIE, sy-vline,
  WA_CEFLD-REFIL, sy-vline,
  WA_CEFLD-REFLL, sy-vline,
  WA_CEFLD-VIEWN, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CEFLD 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_CEFLD 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_CEFLD INTO WA_CEFLD.


*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 CUNIT, internal->external for field UNIT0
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_CEFLD-UNIT0
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CEFLD-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_CEFLD_STR, 
EWSKZ TYPE STRING,
USGFL TYPE STRING,
TIMFL TYPE STRING,
CHFIE TYPE STRING,
FIXVL TYPE STRING,
TIMLC TYPE STRING,
TXTAB TYPE STRING,
REFIE TYPE STRING,
REFIL TYPE STRING,
REFLL TYPE STRING,
VIEWN TYPE STRING,
HKTAB TYPE STRING,
ORFIE TYPE STRING,
DIMPR TYPE STRING,
BERKZ TYPE STRING,
PLAKZ TYPE STRING,
LITIN TYPE STRING,
RCSIN TYPE STRING,
RSLIN TYPE STRING,
CHAIN TYPE STRING,
AGGDI TYPE STRING,
AGGTM TYPE STRING,
AGGFI TYPE STRING,
PRDEC TYPE STRING,
PRSNT TYPE STRING,
OPORD TYPE STRING,
SBGRP TYPE STRING,
CCNUM TYPE STRING,
DCURR TYPE STRING,
CQMRK TYPE STRING,
CURFI TYPE STRING,
CUKY0 TYPE STRING,
UNIT0 TYPE STRING,
TFLAG TYPE STRING,
SPCTR TYPE STRING,
OEKZ TYPE STRING,
DMAC TYPE STRING,
POS_CE0 TYPE STRING,
POS_CE1 TYPE STRING,
POS_CE2 TYPE STRING,
POS_CE3 TYPE STRING,
POS_CE4 TYPE STRING,
POS_CE5 TYPE STRING,
OFF_CE0 TYPE STRING,
OFF_CE1 TYPE STRING,
OFF_CE4 TYPE STRING,
KFLDN TYPE STRING,
PATYPE TYPE STRING,
DEPFL TYPE STRING,
VALUE_HELP TYPE STRING,
COPAACDOCA_FIELD TYPE STRING,
LEVEL_ACDOC_ITEM TYPE STRING,
IS_KEY_USER_FIELD TYPE STRING,
FIELD_INCONSISTENT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CEFLD_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_CEFLD_STR-EWSKZ sy-vline 
WA_CEFLD_STR-USGFL sy-vline 
WA_CEFLD_STR-TIMFL sy-vline 
WA_CEFLD_STR-CHFIE sy-vline 
WA_CEFLD_STR-FIXVL sy-vline 
WA_CEFLD_STR-TIMLC sy-vline 
WA_CEFLD_STR-TXTAB sy-vline 
WA_CEFLD_STR-REFIE sy-vline 
WA_CEFLD_STR-REFIL sy-vline 
WA_CEFLD_STR-REFLL sy-vline 
WA_CEFLD_STR-VIEWN sy-vline 
WA_CEFLD_STR-HKTAB sy-vline 
WA_CEFLD_STR-ORFIE sy-vline 
WA_CEFLD_STR-DIMPR sy-vline 
WA_CEFLD_STR-BERKZ sy-vline 
WA_CEFLD_STR-PLAKZ sy-vline 
WA_CEFLD_STR-LITIN sy-vline 
WA_CEFLD_STR-RCSIN sy-vline 
WA_CEFLD_STR-RSLIN sy-vline 
WA_CEFLD_STR-CHAIN sy-vline 
WA_CEFLD_STR-AGGDI sy-vline 
WA_CEFLD_STR-AGGTM sy-vline 
WA_CEFLD_STR-AGGFI sy-vline 
WA_CEFLD_STR-PRDEC sy-vline 
WA_CEFLD_STR-PRSNT sy-vline 
WA_CEFLD_STR-OPORD sy-vline 
WA_CEFLD_STR-SBGRP sy-vline 
WA_CEFLD_STR-CCNUM sy-vline 
WA_CEFLD_STR-DCURR sy-vline 
WA_CEFLD_STR-CQMRK sy-vline 
WA_CEFLD_STR-CURFI sy-vline 
WA_CEFLD_STR-CUKY0 sy-vline 
WA_CEFLD_STR-UNIT0 sy-vline 
WA_CEFLD_STR-TFLAG sy-vline 
WA_CEFLD_STR-SPCTR sy-vline 
WA_CEFLD_STR-OEKZ sy-vline 
WA_CEFLD_STR-DMAC sy-vline 
WA_CEFLD_STR-POS_CE0 sy-vline 
WA_CEFLD_STR-POS_CE1 sy-vline 
WA_CEFLD_STR-POS_CE2 sy-vline 
WA_CEFLD_STR-POS_CE3 sy-vline 
WA_CEFLD_STR-POS_CE4 sy-vline 
WA_CEFLD_STR-POS_CE5 sy-vline 
WA_CEFLD_STR-OFF_CE0 sy-vline 
WA_CEFLD_STR-OFF_CE1 sy-vline 
WA_CEFLD_STR-OFF_CE4 sy-vline 
WA_CEFLD_STR-KFLDN sy-vline 
WA_CEFLD_STR-PATYPE sy-vline 
WA_CEFLD_STR-DEPFL sy-vline 
WA_CEFLD_STR-VALUE_HELP sy-vline 
WA_CEFLD_STR-COPAACDOCA_FIELD sy-vline 
WA_CEFLD_STR-LEVEL_ACDOC_ITEM sy-vline 
WA_CEFLD_STR-IS_KEY_USER_FIELD sy-vline 
WA_CEFLD_STR-FIELD_INCONSISTENT sy-vline      INTO ld_text SEPARATED BY SPACE.

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