ABAP Select data from SAP table E2OIK01 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 E2OIK01 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 E2OIK01. 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 E2OIK01 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_E2OIK01 TYPE STANDARD TABLE OF E2OIK01,
      WA_E2OIK01 TYPE E2OIK01,
      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: <E2OIK01> TYPE E2OIK01.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_E2OIK01.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM E2OIK01
  INTO TABLE IT_E2OIK01.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM E2OIK01
*  INTO TABLE @DATA(IT_E2OIK012).
*--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_E2OIK01 INDEX 1 INTO DATA(WA_E2OIK012).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_E2OIK01 ASSIGNING <E2OIK01>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<E2OIK01>-ACTION = 1.
<E2OIK01>-DOCACK = 1.
<E2OIK01>-BELNR = 1.
<E2OIK01>-BELNR_TECH = 1.
<E2OIK01>-TPLST = 1.

ENDLOOP.

LOOP AT IT_E2OIK01 INTO WA_E2OIK01.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_E2OIK01-TPLST_DES, sy-vline,
  WA_E2OIK01-VSART, sy-vline,
  WA_E2OIK01-VSART_DES, sy-vline,
  WA_E2OIK01-SHTYP, sy-vline,
  WA_E2OIK01-SHTYP_DES, sy-vline,
  WA_E2OIK01-VKTRA, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_E2OIK01 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_E2OIK01 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_E2OIK01 INTO WA_E2OIK01.


*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_E2OIK01_STR, 
ACTION TYPE STRING,
DOCACK TYPE STRING,
BELNR TYPE STRING,
BELNR_TECH TYPE STRING,
TPLST TYPE STRING,
TPLST_DES TYPE STRING,
VSART TYPE STRING,
VSART_DES TYPE STRING,
SHTYP TYPE STRING,
SHTYP_DES TYPE STRING,
VKTRA TYPE STRING,
VKTRA_DES TYPE STRING,END OF T_EKKO_STR.
DATA: WA_E2OIK01_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_E2OIK01_STR-ACTION sy-vline 
WA_E2OIK01_STR-DOCACK sy-vline 
WA_E2OIK01_STR-BELNR sy-vline 
WA_E2OIK01_STR-BELNR_TECH sy-vline 
WA_E2OIK01_STR-TPLST sy-vline 
WA_E2OIK01_STR-TPLST_DES sy-vline 
WA_E2OIK01_STR-VSART sy-vline 
WA_E2OIK01_STR-VSART_DES sy-vline 
WA_E2OIK01_STR-SHTYP sy-vline 
WA_E2OIK01_STR-SHTYP_DES sy-vline 
WA_E2OIK01_STR-VKTRA sy-vline 
WA_E2OIK01_STR-VKTRA_DES sy-vline      INTO ld_text SEPARATED BY SPACE.

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