ABAP Select data from SAP table E2CSSL into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP E2CSSL 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 E2CSSL. 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 E2CSSL 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_E2CSSL TYPE STANDARD TABLE OF E2CSSL,
      WA_E2CSSL TYPE E2CSSL,
      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: <E2CSSL> TYPE E2CSSL.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_E2CSSL.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM E2CSSL
  INTO TABLE IT_E2CSSL.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM E2CSSL
*  INTO TABLE @DATA(IT_E2CSSL2).
*--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_E2CSSL INDEX 1 INTO DATA(WA_E2CSSL2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_E2CSSL ASSIGNING <E2CSSL>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<E2CSSL>-KOKRS = 1.
<E2CSSL>-KOSTL = 1.
<E2CSSL>-LSTAR = 1.
<E2CSSL>-GJAHR = 1.
<E2CSSL>-LATYP = 1.

ENDLOOP.

LOOP AT IT_E2CSSL INTO WA_E2CSSL.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_E2CSSL-LEINH, sy-vline,
  WA_E2CSSL-AUSFK, sy-vline,
  WA_E2CSSL-AUSEH, sy-vline,
  WA_E2CSSL-OBJNR, sy-vline,
  WA_E2CSSL-LATYPI, sy-vline,
  WA_E2CSSL-XDELE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_E2CSSL 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_E2CSSL 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_E2CSSL INTO WA_E2CSSL.


*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 ALPHA, internal->external for field KOSTL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_E2CSSL-KOSTL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_E2CSSL-KOSTL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field GJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_E2CSSL-GJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_E2CSSL-GJAHR.
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_E2CSSL_STR, 
KOKRS TYPE STRING,
KOSTL TYPE STRING,
LSTAR TYPE STRING,
GJAHR TYPE STRING,
LATYP TYPE STRING,
LEINH TYPE STRING,
AUSFK TYPE STRING,
AUSEH TYPE STRING,
OBJNR TYPE STRING,
LATYPI TYPE STRING,
XDELE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_E2CSSL_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_E2CSSL_STR-KOKRS sy-vline 
WA_E2CSSL_STR-KOSTL sy-vline 
WA_E2CSSL_STR-LSTAR sy-vline 
WA_E2CSSL_STR-GJAHR sy-vline 
WA_E2CSSL_STR-LATYP sy-vline 
WA_E2CSSL_STR-LEINH sy-vline 
WA_E2CSSL_STR-AUSFK sy-vline 
WA_E2CSSL_STR-AUSEH sy-vline 
WA_E2CSSL_STR-OBJNR sy-vline 
WA_E2CSSL_STR-LATYPI sy-vline 
WA_E2CSSL_STR-XDELE sy-vline      INTO ld_text SEPARATED BY SPACE.

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