ABAP Select data from SAP table E3PLKOP into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP E3PLKOP 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 E3PLKOP. 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 E3PLKOP 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_E3PLKOP TYPE STANDARD TABLE OF E3PLKOP,
      WA_E3PLKOP TYPE E3PLKOP,
      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: <E3PLKOP> TYPE E3PLKOP.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_E3PLKOP.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM E3PLKOP
  INTO TABLE IT_E3PLKOP.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM E3PLKOP
*  INTO TABLE @DATA(IT_E3PLKOP2).
*--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_E3PLKOP INDEX 1 INTO DATA(WA_E3PLKOP2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_E3PLKOP ASSIGNING <E3PLKOP>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<E3PLKOP>-PLNTY = 1.
<E3PLKOP>-PLNNR = 1.
<E3PLKOP>-PLNAL = 1.
<E3PLKOP>-ZAEHL = 1.
<E3PLKOP>-VERSN = 1.

ENDLOOP.

LOOP AT IT_E3PLKOP INTO WA_E3PLKOP.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_E3PLKOP-STATUS, sy-vline,
  WA_E3PLKOP-KTEXT, sy-vline,
  WA_E3PLKOP-WERKS, sy-vline,
  WA_E3PLKOP-PLNME, sy-vline,
  WA_E3PLKOP-LOSVN, sy-vline,
  WA_E3PLKOP-LOSBS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_E3PLKOP 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_E3PLKOP 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_E3PLKOP INTO WA_E3PLKOP.


*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 ALPHA, internal->external for field PLNNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_E3PLKOP-PLNNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_E3PLKOP-PLNNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PLNAL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_E3PLKOP-PLNAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_E3PLKOP-PLNAL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VERSN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_E3PLKOP-VERSN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_E3PLKOP-VERSN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field PLNME
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_E3PLKOP-PLNME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_E3PLKOP-PLNME.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SOURCE_PLNNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_E3PLKOP-SOURCE_PLNNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_E3PLKOP-SOURCE_PLNNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SOURCE_PLNAL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_E3PLKOP-SOURCE_PLNAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_E3PLKOP-SOURCE_PLNAL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SOURCE_VERSN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_E3PLKOP-SOURCE_VERSN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_E3PLKOP-SOURCE_VERSN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field AENNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_E3PLKOP-AENNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_E3PLKOP-AENNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field AENNR_REL_CHECK
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_E3PLKOP-AENNR_REL_CHECK
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_E3PLKOP-AENNR_REL_CHECK.
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_E3PLKOP_STR, 
PLNTY TYPE STRING,
PLNNR TYPE STRING,
PLNAL TYPE STRING,
ZAEHL TYPE STRING,
VERSN TYPE STRING,
STATUS TYPE STRING,
KTEXT TYPE STRING,
WERKS TYPE STRING,
PLNME TYPE STRING,
LOSVN TYPE STRING,
LOSBS TYPE STRING,
SOURCE_PLNTY TYPE STRING,
SOURCE_PLNNR TYPE STRING,
SOURCE_PLNAL TYPE STRING,
SOURCE_VERSN TYPE STRING,
RELAXED TYPE STRING,
AENNR TYPE STRING,
AENNR_REL_CHECK TYPE STRING,END OF T_EKKO_STR.
DATA: WA_E3PLKOP_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_E3PLKOP_STR-PLNTY sy-vline 
WA_E3PLKOP_STR-PLNNR sy-vline 
WA_E3PLKOP_STR-PLNAL sy-vline 
WA_E3PLKOP_STR-ZAEHL sy-vline 
WA_E3PLKOP_STR-VERSN sy-vline 
WA_E3PLKOP_STR-STATUS sy-vline 
WA_E3PLKOP_STR-KTEXT sy-vline 
WA_E3PLKOP_STR-WERKS sy-vline 
WA_E3PLKOP_STR-PLNME sy-vline 
WA_E3PLKOP_STR-LOSVN sy-vline 
WA_E3PLKOP_STR-LOSBS sy-vline 
WA_E3PLKOP_STR-SOURCE_PLNTY sy-vline 
WA_E3PLKOP_STR-SOURCE_PLNNR sy-vline 
WA_E3PLKOP_STR-SOURCE_PLNAL sy-vline 
WA_E3PLKOP_STR-SOURCE_VERSN sy-vline 
WA_E3PLKOP_STR-RELAXED sy-vline 
WA_E3PLKOP_STR-AENNR sy-vline 
WA_E3PLKOP_STR-AENNR_REL_CHECK sy-vline      INTO ld_text SEPARATED BY SPACE.

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