ABAP Select data from SAP table EOVCH into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EOVCH
*  INTO TABLE @DATA(IT_EOVCH2).
*--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_EOVCH INDEX 1 INTO DATA(WA_EOVCH2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EOVCH>-MON01 = 1.
<EOVCH>-VAL01 = 1.
<EOVCH>-MON02 = 1.
<EOVCH>-VAL02 = 1.
<EOVCH>-MON03 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EOVCH-VAL03, sy-vline,
  WA_EOVCH-MON04, sy-vline,
  WA_EOVCH-VAL04, sy-vline,
  WA_EOVCH-MON05, sy-vline,
  WA_EOVCH-VAL05, sy-vline,
  WA_EOVCH-MON06, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EOVCH 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_EOVCH 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_EOVCH INTO WA_EOVCH.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_EOVCH_STR, 
MON01 TYPE STRING,
VAL01 TYPE STRING,
MON02 TYPE STRING,
VAL02 TYPE STRING,
MON03 TYPE STRING,
VAL03 TYPE STRING,
MON04 TYPE STRING,
VAL04 TYPE STRING,
MON05 TYPE STRING,
VAL05 TYPE STRING,
MON06 TYPE STRING,
VAL06 TYPE STRING,
MON07 TYPE STRING,
VAL07 TYPE STRING,
MON08 TYPE STRING,
VAL08 TYPE STRING,
MON09 TYPE STRING,
VAL09 TYPE STRING,
MON10 TYPE STRING,
VAL10 TYPE STRING,
MON11 TYPE STRING,
VAL11 TYPE STRING,
MON12 TYPE STRING,
VAL12 TYPE STRING,
MON13 TYPE STRING,
VAL13 TYPE STRING,
MON14 TYPE STRING,
VAL14 TYPE STRING,
MON15 TYPE STRING,
VAL15 TYPE STRING,
MON16 TYPE STRING,
VAL16 TYPE STRING,
MON17 TYPE STRING,
VAL17 TYPE STRING,
MON18 TYPE STRING,
VAL18 TYPE STRING,
MON19 TYPE STRING,
VAL19 TYPE STRING,
MON20 TYPE STRING,
VAL20 TYPE STRING,
MON21 TYPE STRING,
VAL21 TYPE STRING,
MON22 TYPE STRING,
VAL22 TYPE STRING,
MON23 TYPE STRING,
VAL23 TYPE STRING,
MON24 TYPE STRING,
VAL24 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EOVCH_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_EOVCH_STR-MON01 sy-vline 
WA_EOVCH_STR-VAL01 sy-vline 
WA_EOVCH_STR-MON02 sy-vline 
WA_EOVCH_STR-VAL02 sy-vline 
WA_EOVCH_STR-MON03 sy-vline 
WA_EOVCH_STR-VAL03 sy-vline 
WA_EOVCH_STR-MON04 sy-vline 
WA_EOVCH_STR-VAL04 sy-vline 
WA_EOVCH_STR-MON05 sy-vline 
WA_EOVCH_STR-VAL05 sy-vline 
WA_EOVCH_STR-MON06 sy-vline 
WA_EOVCH_STR-VAL06 sy-vline 
WA_EOVCH_STR-MON07 sy-vline 
WA_EOVCH_STR-VAL07 sy-vline 
WA_EOVCH_STR-MON08 sy-vline 
WA_EOVCH_STR-VAL08 sy-vline 
WA_EOVCH_STR-MON09 sy-vline 
WA_EOVCH_STR-VAL09 sy-vline 
WA_EOVCH_STR-MON10 sy-vline 
WA_EOVCH_STR-VAL10 sy-vline 
WA_EOVCH_STR-MON11 sy-vline 
WA_EOVCH_STR-VAL11 sy-vline 
WA_EOVCH_STR-MON12 sy-vline 
WA_EOVCH_STR-VAL12 sy-vline 
WA_EOVCH_STR-MON13 sy-vline 
WA_EOVCH_STR-VAL13 sy-vline 
WA_EOVCH_STR-MON14 sy-vline 
WA_EOVCH_STR-VAL14 sy-vline 
WA_EOVCH_STR-MON15 sy-vline 
WA_EOVCH_STR-VAL15 sy-vline 
WA_EOVCH_STR-MON16 sy-vline 
WA_EOVCH_STR-VAL16 sy-vline 
WA_EOVCH_STR-MON17 sy-vline 
WA_EOVCH_STR-VAL17 sy-vline 
WA_EOVCH_STR-MON18 sy-vline 
WA_EOVCH_STR-VAL18 sy-vline 
WA_EOVCH_STR-MON19 sy-vline 
WA_EOVCH_STR-VAL19 sy-vline 
WA_EOVCH_STR-MON20 sy-vline 
WA_EOVCH_STR-VAL20 sy-vline 
WA_EOVCH_STR-MON21 sy-vline 
WA_EOVCH_STR-VAL21 sy-vline 
WA_EOVCH_STR-MON22 sy-vline 
WA_EOVCH_STR-VAL22 sy-vline 
WA_EOVCH_STR-MON23 sy-vline 
WA_EOVCH_STR-VAL23 sy-vline 
WA_EOVCH_STR-MON24 sy-vline 
WA_EOVCH_STR-VAL24 sy-vline      INTO ld_text SEPARATED BY SPACE.

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