ABAP Select data from SAP table E2COST into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP E2COST 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 E2COST. 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 E2COST 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_E2COST TYPE STANDARD TABLE OF E2COST,
      WA_E2COST TYPE E2COST,
      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: <E2COST> TYPE E2COST.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_E2COST.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM E2COST
  INTO TABLE IT_E2COST.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM E2COST
*  INTO TABLE @DATA(IT_E2COST2).
*--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_E2COST INDEX 1 INTO DATA(WA_E2COST2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_E2COST ASSIGNING <E2COST>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<E2COST>-LEDNR = 1.
<E2COST>-OBJNR = 1.
<E2COST>-GJAHR = 1.
<E2COST>-WRTTP = 1.
<E2COST>-VERSN = 1.

ENDLOOP.

LOOP AT IT_E2COST INTO WA_E2COST.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_E2COST-TARKZ, sy-vline,
  WA_E2COST-PERBL, sy-vline,
  WA_E2COST-VRGNG, sy-vline,
  WA_E2COST-TKG001, sy-vline,
  WA_E2COST-TKG002, sy-vline,
  WA_E2COST-TKG003, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_E2COST 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_E2COST 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_E2COST INTO WA_E2COST.


*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 LEDNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_E2COST-LEDNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_E2COST-LEDNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field GJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_E2COST-GJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_E2COST-GJAHR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field WRTTP
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_E2COST-WRTTP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_E2COST-WRTTP.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VERSN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_E2COST-VERSN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_E2COST-VERSN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field TARKZ
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_E2COST-TARKZ
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_E2COST-TARKZ.
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_E2COST_STR, 
LEDNR TYPE STRING,
OBJNR TYPE STRING,
GJAHR TYPE STRING,
WRTTP TYPE STRING,
VERSN TYPE STRING,
TARKZ TYPE STRING,
PERBL TYPE STRING,
VRGNG TYPE STRING,
TKG001 TYPE STRING,
TKG002 TYPE STRING,
TKG003 TYPE STRING,
TKG004 TYPE STRING,
TKG005 TYPE STRING,
TKG006 TYPE STRING,
TKG007 TYPE STRING,
TKG008 TYPE STRING,
TKG009 TYPE STRING,
TKG010 TYPE STRING,
TKG011 TYPE STRING,
TKG012 TYPE STRING,
TKG013 TYPE STRING,
TKG014 TYPE STRING,
TKG015 TYPE STRING,
TKG016 TYPE STRING,
TKF001 TYPE STRING,
TKF002 TYPE STRING,
TKF003 TYPE STRING,
TKF004 TYPE STRING,
TKF005 TYPE STRING,
TKF006 TYPE STRING,
TKF007 TYPE STRING,
TKF008 TYPE STRING,
TKF009 TYPE STRING,
TKF010 TYPE STRING,
TKF011 TYPE STRING,
TKF012 TYPE STRING,
TKF013 TYPE STRING,
TKF014 TYPE STRING,
TKF015 TYPE STRING,
TKF016 TYPE STRING,
TKE001 TYPE STRING,
TKE002 TYPE STRING,
TKE003 TYPE STRING,
TKE004 TYPE STRING,
TKE005 TYPE STRING,
TKE006 TYPE STRING,
TKE007 TYPE STRING,
TKE008 TYPE STRING,
TKE009 TYPE STRING,
TKE010 TYPE STRING,
TKE011 TYPE STRING,
TKE012 TYPE STRING,
TKE013 TYPE STRING,
TKE014 TYPE STRING,
TKE015 TYPE STRING,
TKE016 TYPE STRING,
XDELE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_E2COST_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_E2COST_STR-LEDNR sy-vline 
WA_E2COST_STR-OBJNR sy-vline 
WA_E2COST_STR-GJAHR sy-vline 
WA_E2COST_STR-WRTTP sy-vline 
WA_E2COST_STR-VERSN sy-vline 
WA_E2COST_STR-TARKZ sy-vline 
WA_E2COST_STR-PERBL sy-vline 
WA_E2COST_STR-VRGNG sy-vline 
WA_E2COST_STR-TKG001 sy-vline 
WA_E2COST_STR-TKG002 sy-vline 
WA_E2COST_STR-TKG003 sy-vline 
WA_E2COST_STR-TKG004 sy-vline 
WA_E2COST_STR-TKG005 sy-vline 
WA_E2COST_STR-TKG006 sy-vline 
WA_E2COST_STR-TKG007 sy-vline 
WA_E2COST_STR-TKG008 sy-vline 
WA_E2COST_STR-TKG009 sy-vline 
WA_E2COST_STR-TKG010 sy-vline 
WA_E2COST_STR-TKG011 sy-vline 
WA_E2COST_STR-TKG012 sy-vline 
WA_E2COST_STR-TKG013 sy-vline 
WA_E2COST_STR-TKG014 sy-vline 
WA_E2COST_STR-TKG015 sy-vline 
WA_E2COST_STR-TKG016 sy-vline 
WA_E2COST_STR-TKF001 sy-vline 
WA_E2COST_STR-TKF002 sy-vline 
WA_E2COST_STR-TKF003 sy-vline 
WA_E2COST_STR-TKF004 sy-vline 
WA_E2COST_STR-TKF005 sy-vline 
WA_E2COST_STR-TKF006 sy-vline 
WA_E2COST_STR-TKF007 sy-vline 
WA_E2COST_STR-TKF008 sy-vline 
WA_E2COST_STR-TKF009 sy-vline 
WA_E2COST_STR-TKF010 sy-vline 
WA_E2COST_STR-TKF011 sy-vline 
WA_E2COST_STR-TKF012 sy-vline 
WA_E2COST_STR-TKF013 sy-vline 
WA_E2COST_STR-TKF014 sy-vline 
WA_E2COST_STR-TKF015 sy-vline 
WA_E2COST_STR-TKF016 sy-vline 
WA_E2COST_STR-TKE001 sy-vline 
WA_E2COST_STR-TKE002 sy-vline 
WA_E2COST_STR-TKE003 sy-vline 
WA_E2COST_STR-TKE004 sy-vline 
WA_E2COST_STR-TKE005 sy-vline 
WA_E2COST_STR-TKE006 sy-vline 
WA_E2COST_STR-TKE007 sy-vline 
WA_E2COST_STR-TKE008 sy-vline 
WA_E2COST_STR-TKE009 sy-vline 
WA_E2COST_STR-TKE010 sy-vline 
WA_E2COST_STR-TKE011 sy-vline 
WA_E2COST_STR-TKE012 sy-vline 
WA_E2COST_STR-TKE013 sy-vline 
WA_E2COST_STR-TKE014 sy-vline 
WA_E2COST_STR-TKE015 sy-vline 
WA_E2COST_STR-TKE016 sy-vline 
WA_E2COST_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.