ABAP Select data from SAP table E2OIKA1 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP E2OIKA1 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 E2OIKA1. 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 E2OIKA1 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_E2OIKA1 TYPE STANDARD TABLE OF E2OIKA1,
      WA_E2OIKA1 TYPE E2OIKA1,
      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: <E2OIKA1> TYPE E2OIKA1.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_E2OIKA1.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM E2OIKA1
  INTO TABLE IT_E2OIKA1.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM E2OIKA1
*  INTO TABLE @DATA(IT_E2OIKA12).
*--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_E2OIKA1 INDEX 1 INTO DATA(WA_E2OIKA12).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_E2OIKA1 ASSIGNING <E2OIKA1>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<E2OIKA1>-PARVW = 1.
<E2OIKA1>-PARTN = 1.
<E2OIKA1>-LIFNR = 1.
<E2OIKA1>-NAME1 = 1.
<E2OIKA1>-NAME2 = 1.

ENDLOOP.

LOOP AT IT_E2OIKA1 INTO WA_E2OIKA1.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_E2OIKA1-NAME3, sy-vline,
  WA_E2OIKA1-NAME4, sy-vline,
  WA_E2OIKA1-STRAS, sy-vline,
  WA_E2OIKA1-STRS2, sy-vline,
  WA_E2OIKA1-PFACH, sy-vline,
  WA_E2OIKA1-ORT01, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_E2OIKA1 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_E2OIKA1 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_E2OIKA1 INTO WA_E2OIKA1.


*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_E2OIKA1_STR, 
PARVW TYPE STRING,
PARTN TYPE STRING,
LIFNR TYPE STRING,
NAME1 TYPE STRING,
NAME2 TYPE STRING,
NAME3 TYPE STRING,
NAME4 TYPE STRING,
STRAS TYPE STRING,
STRS2 TYPE STRING,
PFACH TYPE STRING,
ORT01 TYPE STRING,
COUNC TYPE STRING,
PSTLZ TYPE STRING,
PSTL2 TYPE STRING,
LAND1 TYPE STRING,
ABLAD TYPE STRING,
PERNR TYPE STRING,
PARNR TYPE STRING,
TELF1 TYPE STRING,
TELF2 TYPE STRING,
TELBX TYPE STRING,
TELFX TYPE STRING,
TELTX TYPE STRING,
TELX1 TYPE STRING,
SPRAS TYPE STRING,
ANRED TYPE STRING,
ORT02 TYPE STRING,
HAUSN TYPE STRING,
STOCK TYPE STRING,
REGIO TYPE STRING,
PARGE TYPE STRING,
ISOAL TYPE STRING,
ISONU TYPE STRING,
FCODE TYPE STRING,
IHREZ TYPE STRING,
BNAME TYPE STRING,
PAORG TYPE STRING,
ORGTX TYPE STRING,
PAGRU TYPE STRING,
KNREF TYPE STRING,
ILNNR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_E2OIKA1_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_E2OIKA1_STR-PARVW sy-vline 
WA_E2OIKA1_STR-PARTN sy-vline 
WA_E2OIKA1_STR-LIFNR sy-vline 
WA_E2OIKA1_STR-NAME1 sy-vline 
WA_E2OIKA1_STR-NAME2 sy-vline 
WA_E2OIKA1_STR-NAME3 sy-vline 
WA_E2OIKA1_STR-NAME4 sy-vline 
WA_E2OIKA1_STR-STRAS sy-vline 
WA_E2OIKA1_STR-STRS2 sy-vline 
WA_E2OIKA1_STR-PFACH sy-vline 
WA_E2OIKA1_STR-ORT01 sy-vline 
WA_E2OIKA1_STR-COUNC sy-vline 
WA_E2OIKA1_STR-PSTLZ sy-vline 
WA_E2OIKA1_STR-PSTL2 sy-vline 
WA_E2OIKA1_STR-LAND1 sy-vline 
WA_E2OIKA1_STR-ABLAD sy-vline 
WA_E2OIKA1_STR-PERNR sy-vline 
WA_E2OIKA1_STR-PARNR sy-vline 
WA_E2OIKA1_STR-TELF1 sy-vline 
WA_E2OIKA1_STR-TELF2 sy-vline 
WA_E2OIKA1_STR-TELBX sy-vline 
WA_E2OIKA1_STR-TELFX sy-vline 
WA_E2OIKA1_STR-TELTX sy-vline 
WA_E2OIKA1_STR-TELX1 sy-vline 
WA_E2OIKA1_STR-SPRAS sy-vline 
WA_E2OIKA1_STR-ANRED sy-vline 
WA_E2OIKA1_STR-ORT02 sy-vline 
WA_E2OIKA1_STR-HAUSN sy-vline 
WA_E2OIKA1_STR-STOCK sy-vline 
WA_E2OIKA1_STR-REGIO sy-vline 
WA_E2OIKA1_STR-PARGE sy-vline 
WA_E2OIKA1_STR-ISOAL sy-vline 
WA_E2OIKA1_STR-ISONU sy-vline 
WA_E2OIKA1_STR-FCODE sy-vline 
WA_E2OIKA1_STR-IHREZ sy-vline 
WA_E2OIKA1_STR-BNAME sy-vline 
WA_E2OIKA1_STR-PAORG sy-vline 
WA_E2OIKA1_STR-ORGTX sy-vline 
WA_E2OIKA1_STR-PAGRU sy-vline 
WA_E2OIKA1_STR-KNREF sy-vline 
WA_E2OIKA1_STR-ILNNR sy-vline      INTO ld_text SEPARATED BY SPACE.

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