ABAP Select data from SAP table P12DI_S_PREP_EE_KEY into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP P12DI_S_PREP_EE_KEY 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 P12DI_S_PREP_EE_KEY. 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 P12DI_S_PREP_EE_KEY 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_P12DI_S_PREP_EE_KEY TYPE STANDARD TABLE OF P12DI_S_PREP_EE_KEY,
      WA_P12DI_S_PREP_EE_KEY TYPE P12DI_S_PREP_EE_KEY,
      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: <P12DI_S_PREP_EE_KEY> TYPE P12DI_S_PREP_EE_KEY.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_P12DI_S_PREP_EE_KEY.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM P12DI_S_PREP_EE_KEY
  INTO TABLE IT_P12DI_S_PREP_EE_KEY.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM P12DI_S_PREP_EE_KEY
*  INTO TABLE @DATA(IT_P12DI_S_PREP_EE_KEY2).
*--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_P12DI_S_PREP_EE_KEY INDEX 1 INTO DATA(WA_P12DI_S_PREP_EE_KEY2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_P12DI_S_PREP_EE_KEY ASSIGNING <P12DI_S_PREP_EE_KEY>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<P12DI_S_PREP_EE_KEY>-RSZNR = 1.
<P12DI_S_PREP_EE_KEY>-COMID = 1.
<P12DI_S_PREP_EE_KEY>-RSZRR = 1.
<P12DI_S_PREP_EE_KEY>-PERNR = 1.
<P12DI_S_PREP_EE_KEY>-PERID = 1.

ENDLOOP.

LOOP AT IT_P12DI_S_PREP_EE_KEY INTO WA_P12DI_S_PREP_EE_KEY.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_P12DI_S_PREP_EE_KEY-DIDTP, sy-vline,
  WA_P12DI_S_PREP_EE_KEY-DITPT, sy-vline,
  WA_P12DI_S_PREP_EE_KEY-DIDST, sy-vline,
  WA_P12DI_S_PREP_EE_KEY-ENDAT, sy-vline,
  WA_P12DI_S_PREP_EE_KEY-ENTIM, sy-vline,
  WA_P12DI_S_PREP_EE_KEY-LVDAT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_P12DI_S_PREP_EE_KEY 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_P12DI_S_PREP_EE_KEY 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_P12DI_S_PREP_EE_KEY INTO WA_P12DI_S_PREP_EE_KEY.


*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_P12DI_S_PREP_EE_KEY_STR, 
RSZNR TYPE STRING,
COMID TYPE STRING,
RSZRR TYPE STRING,
PERNR TYPE STRING,
PERID TYPE STRING,
DIDTP TYPE STRING,
DITPT TYPE STRING,
DIDST TYPE STRING,
ENDAT TYPE STRING,
ENTIM TYPE STRING,
LVDAT TYPE STRING,
LVTIM TYPE STRING,
BEPC9 TYPE STRING,
QUALI TYPE STRING,
SENUM TYPE STRING,
UERSZ TYPE STRING,
UECID TYPE STRING,
UENAM TYPE STRING,
STMOD TYPE STRING,
PDNBR TYPE STRING,
UUID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_P12DI_S_PREP_EE_KEY_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_P12DI_S_PREP_EE_KEY_STR-RSZNR sy-vline 
WA_P12DI_S_PREP_EE_KEY_STR-COMID sy-vline 
WA_P12DI_S_PREP_EE_KEY_STR-RSZRR sy-vline 
WA_P12DI_S_PREP_EE_KEY_STR-PERNR sy-vline 
WA_P12DI_S_PREP_EE_KEY_STR-PERID sy-vline 
WA_P12DI_S_PREP_EE_KEY_STR-DIDTP sy-vline 
WA_P12DI_S_PREP_EE_KEY_STR-DITPT sy-vline 
WA_P12DI_S_PREP_EE_KEY_STR-DIDST sy-vline 
WA_P12DI_S_PREP_EE_KEY_STR-ENDAT sy-vline 
WA_P12DI_S_PREP_EE_KEY_STR-ENTIM sy-vline 
WA_P12DI_S_PREP_EE_KEY_STR-LVDAT sy-vline 
WA_P12DI_S_PREP_EE_KEY_STR-LVTIM sy-vline 
WA_P12DI_S_PREP_EE_KEY_STR-BEPC9 sy-vline 
WA_P12DI_S_PREP_EE_KEY_STR-QUALI sy-vline 
WA_P12DI_S_PREP_EE_KEY_STR-SENUM sy-vline 
WA_P12DI_S_PREP_EE_KEY_STR-UERSZ sy-vline 
WA_P12DI_S_PREP_EE_KEY_STR-UECID sy-vline 
WA_P12DI_S_PREP_EE_KEY_STR-UENAM sy-vline 
WA_P12DI_S_PREP_EE_KEY_STR-STMOD sy-vline 
WA_P12DI_S_PREP_EE_KEY_STR-PDNBR sy-vline 
WA_P12DI_S_PREP_EE_KEY_STR-UUID sy-vline      INTO ld_text SEPARATED BY SPACE.

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