ABAP Select data from SAP table P15_COVER into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP P15_COVER 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 P15_COVER. 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 P15_COVER 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_P15_COVER TYPE STANDARD TABLE OF P15_COVER,
      WA_P15_COVER TYPE P15_COVER,
      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: <P15_COVER> TYPE P15_COVER.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_P15_COVER.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM P15_COVER
  INTO TABLE IT_P15_COVER.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM P15_COVER
*  INTO TABLE @DATA(IT_P15_COVER2).
*--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_P15_COVER INDEX 1 INTO DATA(WA_P15_COVER2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_P15_COVER ASSIGNING <P15_COVER>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<P15_COVER>-PERNR = 1.
<P15_COVER>-DAYTX = 1.
<P15_COVER>-WEEKN = 1.
<P15_COVER>-CDATE = 1.
<P15_COVER>-AWART = 1.

ENDLOOP.

LOOP AT IT_P15_COVER INTO WA_P15_COVER.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_P15_COVER-OBEGD, sy-vline,
  WA_P15_COVER-OENDD, sy-vline,
  WA_P15_COVER-KENN1, sy-vline,
  WA_P15_COVER-KENN2, sy-vline,
  WA_P15_COVER-MODIF, sy-vline,
  WA_P15_COVER-SUBRU, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_P15_COVER 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_P15_COVER 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_P15_COVER INTO WA_P15_COVER.


*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_P15_COVER_STR, 
PERNR TYPE STRING,
DAYTX TYPE STRING,
WEEKN TYPE STRING,
CDATE TYPE STRING,
AWART TYPE STRING,
OBEGD TYPE STRING,
OENDD TYPE STRING,
KENN1 TYPE STRING,
KENN2 TYPE STRING,
MODIF TYPE STRING,
SUBRU TYPE STRING,
DAYAB TYPE STRING,
DAYEV TYPE STRING,
KLBE1 TYPE STRING,
KLBE2 TYPE STRING,
GRASI TYPE STRING,
GRAER TYPE STRING,
PROLE TYPE STRING,
LNGTH TYPE STRING,
DOUBL TYPE STRING,
BONUS TYPE STRING,
MOABW TYPE STRING,
TPEVE TYPE STRING,
OKEN1 TYPE STRING,
OKEN2 TYPE STRING,
ABZNR TYPE STRING,
RESTP TYPE STRING,
OBJPS TYPE STRING,
TFIRE TYPE STRING,
DYFRC TYPE STRING,
OTHER TYPE STRING,
CUSTO TYPE STRING,
DOCNR TYPE STRING,
FRACTION TYPE STRING,
COVUNIT TYPE STRING,
SEQNO TYPE STRING,END OF T_EKKO_STR.
DATA: WA_P15_COVER_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_P15_COVER_STR-PERNR sy-vline 
WA_P15_COVER_STR-DAYTX sy-vline 
WA_P15_COVER_STR-WEEKN sy-vline 
WA_P15_COVER_STR-CDATE sy-vline 
WA_P15_COVER_STR-AWART sy-vline 
WA_P15_COVER_STR-OBEGD sy-vline 
WA_P15_COVER_STR-OENDD sy-vline 
WA_P15_COVER_STR-KENN1 sy-vline 
WA_P15_COVER_STR-KENN2 sy-vline 
WA_P15_COVER_STR-MODIF sy-vline 
WA_P15_COVER_STR-SUBRU sy-vline 
WA_P15_COVER_STR-DAYAB sy-vline 
WA_P15_COVER_STR-DAYEV sy-vline 
WA_P15_COVER_STR-KLBE1 sy-vline 
WA_P15_COVER_STR-KLBE2 sy-vline 
WA_P15_COVER_STR-GRASI sy-vline 
WA_P15_COVER_STR-GRAER sy-vline 
WA_P15_COVER_STR-PROLE sy-vline 
WA_P15_COVER_STR-LNGTH sy-vline 
WA_P15_COVER_STR-DOUBL sy-vline 
WA_P15_COVER_STR-BONUS sy-vline 
WA_P15_COVER_STR-MOABW sy-vline 
WA_P15_COVER_STR-TPEVE sy-vline 
WA_P15_COVER_STR-OKEN1 sy-vline 
WA_P15_COVER_STR-OKEN2 sy-vline 
WA_P15_COVER_STR-ABZNR sy-vline 
WA_P15_COVER_STR-RESTP sy-vline 
WA_P15_COVER_STR-OBJPS sy-vline 
WA_P15_COVER_STR-TFIRE sy-vline 
WA_P15_COVER_STR-DYFRC sy-vline 
WA_P15_COVER_STR-OTHER sy-vline 
WA_P15_COVER_STR-CUSTO sy-vline 
WA_P15_COVER_STR-DOCNR sy-vline 
WA_P15_COVER_STR-FRACTION sy-vline 
WA_P15_COVER_STR-COVUNIT sy-vline 
WA_P15_COVER_STR-SEQNO sy-vline      INTO ld_text SEPARATED BY SPACE.

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