ABAP Select data from SAP table EFG_COLLECTION into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EFG_COLLECTION
*  INTO TABLE @DATA(IT_EFG_COLLECTION2).
*--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_EFG_COLLECTION INDEX 1 INTO DATA(WA_EFG_COLLECTION2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EFG_COLLECTION>-CLIENT = 1.
<EFG_COLLECTION>-FORMKEY = 1.
<EFG_COLLECTION>-COLLKEY = 1.
<EFG_COLLECTION>-REFCOLLKEY = 1.
<EFG_COLLECTION>-COLLCURRNO = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EFG_COLLECTION-COLLTYPE, sy-vline,
  WA_EFG_COLLECTION-COLLNAME, sy-vline,
  WA_EFG_COLLECTION-INACTIVE, sy-vline,
  WA_EFG_COLLECTION-TDDEST, sy-vline,
  WA_EFG_COLLECTION-TDARMOD, sy-vline,
  WA_EFG_COLLECTION-FLG_ATTACHMENT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EFG_COLLECTION 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_EFG_COLLECTION 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_EFG_COLLECTION INTO WA_EFG_COLLECTION.


*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 SPDEV, internal->external for field TDDEST
CALL FUNCTION 'CONVERSION_EXIT_SPDEV_OUTPUT'
  EXPORTING
    input =                      WA_EFG_COLLECTION-TDDEST
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EFG_COLLECTION-TDDEST.
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_EFG_COLLECTION_STR, 
CLIENT TYPE STRING,
FORMKEY TYPE STRING,
COLLKEY TYPE STRING,
REFCOLLKEY TYPE STRING,
COLLCURRNO TYPE STRING,
COLLTYPE TYPE STRING,
COLLNAME TYPE STRING,
INACTIVE TYPE STRING,
TDDEST TYPE STRING,
TDARMOD TYPE STRING,
FLG_ATTACHMENT TYPE STRING,
IDENTIFICATION TYPE STRING,
COND_RDI TYPE STRING,
RDI TYPE STRING,
COND_XSF TYPE STRING,
XSF TYPE STRING,
COND_SENDTYPE TYPE STRING,
SENDTYPE TYPE STRING,
XFP TYPE STRING,
COND_XFP TYPE STRING,
NODATA_BEHAVIOUR TYPE STRING,
GET_DATA TYPE STRING,
TDSUFFIX1 TYPE STRING,
TDSUFFIX2 TYPE STRING,
COLLDESCRIPT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EFG_COLLECTION_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_EFG_COLLECTION_STR-CLIENT sy-vline 
WA_EFG_COLLECTION_STR-FORMKEY sy-vline 
WA_EFG_COLLECTION_STR-COLLKEY sy-vline 
WA_EFG_COLLECTION_STR-REFCOLLKEY sy-vline 
WA_EFG_COLLECTION_STR-COLLCURRNO sy-vline 
WA_EFG_COLLECTION_STR-COLLTYPE sy-vline 
WA_EFG_COLLECTION_STR-COLLNAME sy-vline 
WA_EFG_COLLECTION_STR-INACTIVE sy-vline 
WA_EFG_COLLECTION_STR-TDDEST sy-vline 
WA_EFG_COLLECTION_STR-TDARMOD sy-vline 
WA_EFG_COLLECTION_STR-FLG_ATTACHMENT sy-vline 
WA_EFG_COLLECTION_STR-IDENTIFICATION sy-vline 
WA_EFG_COLLECTION_STR-COND_RDI sy-vline 
WA_EFG_COLLECTION_STR-RDI sy-vline 
WA_EFG_COLLECTION_STR-COND_XSF sy-vline 
WA_EFG_COLLECTION_STR-XSF sy-vline 
WA_EFG_COLLECTION_STR-COND_SENDTYPE sy-vline 
WA_EFG_COLLECTION_STR-SENDTYPE sy-vline 
WA_EFG_COLLECTION_STR-XFP sy-vline 
WA_EFG_COLLECTION_STR-COND_XFP sy-vline 
WA_EFG_COLLECTION_STR-NODATA_BEHAVIOUR sy-vline 
WA_EFG_COLLECTION_STR-GET_DATA sy-vline 
WA_EFG_COLLECTION_STR-TDSUFFIX1 sy-vline 
WA_EFG_COLLECTION_STR-TDSUFFIX2 sy-vline 
WA_EFG_COLLECTION_STR-COLLDESCRIPT sy-vline      INTO ld_text SEPARATED BY SPACE.

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