ABAP Select data from SAP table E3KEVA2 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP E3KEVA2 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 E3KEVA2. 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 E3KEVA2 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_E3KEVA2 TYPE STANDARD TABLE OF E3KEVA2,
      WA_E3KEVA2 TYPE E3KEVA2,
      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: <E3KEVA2> TYPE E3KEVA2.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_E3KEVA2.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM E3KEVA2
  INTO TABLE IT_E3KEVA2.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM E3KEVA2
*  INTO TABLE @DATA(IT_E3KEVA22).
*--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_E3KEVA2 INDEX 1 INTO DATA(WA_E3KEVA22).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_E3KEVA2 ASSIGNING <E3KEVA2>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<E3KEVA2>-VAL051 = 1.
<E3KEVA2>-VAL052 = 1.
<E3KEVA2>-VAL053 = 1.
<E3KEVA2>-VAL054 = 1.
<E3KEVA2>-VAL055 = 1.

ENDLOOP.

LOOP AT IT_E3KEVA2 INTO WA_E3KEVA2.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_E3KEVA2-VAL056, sy-vline,
  WA_E3KEVA2-VAL057, sy-vline,
  WA_E3KEVA2-VAL058, sy-vline,
  WA_E3KEVA2-VAL059, sy-vline,
  WA_E3KEVA2-VAL060, sy-vline,
  WA_E3KEVA2-VAL061, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_E3KEVA2 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_E3KEVA2 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_E3KEVA2 INTO WA_E3KEVA2.


*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_E3KEVA2_STR, 
VAL051 TYPE STRING,
VAL052 TYPE STRING,
VAL053 TYPE STRING,
VAL054 TYPE STRING,
VAL055 TYPE STRING,
VAL056 TYPE STRING,
VAL057 TYPE STRING,
VAL058 TYPE STRING,
VAL059 TYPE STRING,
VAL060 TYPE STRING,
VAL061 TYPE STRING,
VAL062 TYPE STRING,
VAL063 TYPE STRING,
VAL064 TYPE STRING,
VAL065 TYPE STRING,
VAL066 TYPE STRING,
VAL067 TYPE STRING,
VAL068 TYPE STRING,
VAL069 TYPE STRING,
VAL070 TYPE STRING,
VAL071 TYPE STRING,
VAL072 TYPE STRING,
VAL073 TYPE STRING,
VAL074 TYPE STRING,
VAL075 TYPE STRING,
VAL076 TYPE STRING,
VAL077 TYPE STRING,
VAL078 TYPE STRING,
VAL079 TYPE STRING,
VAL080 TYPE STRING,
VAL081 TYPE STRING,
VAL082 TYPE STRING,
VAL083 TYPE STRING,
VAL084 TYPE STRING,
VAL085 TYPE STRING,
VAL086 TYPE STRING,
VAL087 TYPE STRING,
VAL088 TYPE STRING,
VAL089 TYPE STRING,
VAL090 TYPE STRING,
VAL091 TYPE STRING,
VAL092 TYPE STRING,
VAL093 TYPE STRING,
VAL094 TYPE STRING,
VAL095 TYPE STRING,
VAL096 TYPE STRING,
VAL097 TYPE STRING,
VAL098 TYPE STRING,
VAL099 TYPE STRING,
VAL100 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_E3KEVA2_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_E3KEVA2_STR-VAL051 sy-vline 
WA_E3KEVA2_STR-VAL052 sy-vline 
WA_E3KEVA2_STR-VAL053 sy-vline 
WA_E3KEVA2_STR-VAL054 sy-vline 
WA_E3KEVA2_STR-VAL055 sy-vline 
WA_E3KEVA2_STR-VAL056 sy-vline 
WA_E3KEVA2_STR-VAL057 sy-vline 
WA_E3KEVA2_STR-VAL058 sy-vline 
WA_E3KEVA2_STR-VAL059 sy-vline 
WA_E3KEVA2_STR-VAL060 sy-vline 
WA_E3KEVA2_STR-VAL061 sy-vline 
WA_E3KEVA2_STR-VAL062 sy-vline 
WA_E3KEVA2_STR-VAL063 sy-vline 
WA_E3KEVA2_STR-VAL064 sy-vline 
WA_E3KEVA2_STR-VAL065 sy-vline 
WA_E3KEVA2_STR-VAL066 sy-vline 
WA_E3KEVA2_STR-VAL067 sy-vline 
WA_E3KEVA2_STR-VAL068 sy-vline 
WA_E3KEVA2_STR-VAL069 sy-vline 
WA_E3KEVA2_STR-VAL070 sy-vline 
WA_E3KEVA2_STR-VAL071 sy-vline 
WA_E3KEVA2_STR-VAL072 sy-vline 
WA_E3KEVA2_STR-VAL073 sy-vline 
WA_E3KEVA2_STR-VAL074 sy-vline 
WA_E3KEVA2_STR-VAL075 sy-vline 
WA_E3KEVA2_STR-VAL076 sy-vline 
WA_E3KEVA2_STR-VAL077 sy-vline 
WA_E3KEVA2_STR-VAL078 sy-vline 
WA_E3KEVA2_STR-VAL079 sy-vline 
WA_E3KEVA2_STR-VAL080 sy-vline 
WA_E3KEVA2_STR-VAL081 sy-vline 
WA_E3KEVA2_STR-VAL082 sy-vline 
WA_E3KEVA2_STR-VAL083 sy-vline 
WA_E3KEVA2_STR-VAL084 sy-vline 
WA_E3KEVA2_STR-VAL085 sy-vline 
WA_E3KEVA2_STR-VAL086 sy-vline 
WA_E3KEVA2_STR-VAL087 sy-vline 
WA_E3KEVA2_STR-VAL088 sy-vline 
WA_E3KEVA2_STR-VAL089 sy-vline 
WA_E3KEVA2_STR-VAL090 sy-vline 
WA_E3KEVA2_STR-VAL091 sy-vline 
WA_E3KEVA2_STR-VAL092 sy-vline 
WA_E3KEVA2_STR-VAL093 sy-vline 
WA_E3KEVA2_STR-VAL094 sy-vline 
WA_E3KEVA2_STR-VAL095 sy-vline 
WA_E3KEVA2_STR-VAL096 sy-vline 
WA_E3KEVA2_STR-VAL097 sy-vline 
WA_E3KEVA2_STR-VAL098 sy-vline 
WA_E3KEVA2_STR-VAL099 sy-vline 
WA_E3KEVA2_STR-VAL100 sy-vline      INTO ld_text SEPARATED BY SPACE.

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