ABAP Select data from SAP table ECCSPAR into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ECCSPAR
*  INTO TABLE @DATA(IT_ECCSPAR2).
*--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_ECCSPAR INDEX 1 INTO DATA(WA_ECCSPAR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ECCSPAR>-RYEAR01 = 1.
<ECCSPAR>-PERID01 = 1.
<ECCSPAR>-PERID02 = 1.
<ECCSPAR>-PERID03 = 1.
<ECCSPAR>-PERID04 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ECCSPAR-PERID05, sy-vline,
  WA_ECCSPAR-PERID06, sy-vline,
  WA_ECCSPAR-PERID07, sy-vline,
  WA_ECCSPAR-PERID08, sy-vline,
  WA_ECCSPAR-PERID09, sy-vline,
  WA_ECCSPAR-PERID10, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ECCSPAR 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_ECCSPAR 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_ECCSPAR INTO WA_ECCSPAR.


*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 GJAHR, internal->external for field RYEAR01
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_ECCSPAR-RYEAR01
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ECCSPAR-RYEAR01.
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_ECCSPAR_STR, 
RYEAR01 TYPE STRING,
PERID01 TYPE STRING,
PERID02 TYPE STRING,
PERID03 TYPE STRING,
PERID04 TYPE STRING,
PERID05 TYPE STRING,
PERID06 TYPE STRING,
PERID07 TYPE STRING,
PERID08 TYPE STRING,
PERID09 TYPE STRING,
PERID10 TYPE STRING,
PERID11 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ECCSPAR_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_ECCSPAR_STR-RYEAR01 sy-vline 
WA_ECCSPAR_STR-PERID01 sy-vline 
WA_ECCSPAR_STR-PERID02 sy-vline 
WA_ECCSPAR_STR-PERID03 sy-vline 
WA_ECCSPAR_STR-PERID04 sy-vline 
WA_ECCSPAR_STR-PERID05 sy-vline 
WA_ECCSPAR_STR-PERID06 sy-vline 
WA_ECCSPAR_STR-PERID07 sy-vline 
WA_ECCSPAR_STR-PERID08 sy-vline 
WA_ECCSPAR_STR-PERID09 sy-vline 
WA_ECCSPAR_STR-PERID10 sy-vline 
WA_ECCSPAR_STR-PERID11 sy-vline      INTO ld_text SEPARATED BY SPACE.

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