ABAP Select data from SAP table P15_S3WKS into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP P15_S3WKS 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_S3WKS. 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_S3WKS 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_S3WKS TYPE STANDARD TABLE OF P15_S3WKS,
      WA_P15_S3WKS TYPE P15_S3WKS,
      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_S3WKS> TYPE P15_S3WKS.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_P15_S3WKS.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM P15_S3WKS
  INTO TABLE IT_P15_S3WKS.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM P15_S3WKS
*  INTO TABLE @DATA(IT_P15_S3WKS2).
*--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_S3WKS INDEX 1 INTO DATA(WA_P15_S3WKS2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_P15_S3WKS ASSIGNING <P15_S3WKS>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<P15_S3WKS>-WEEKN = 1.
<P15_S3WKS>-BEGWK = 1.
<P15_S3WKS>-ENDWK = 1.
<P15_S3WKS>-WORKH = 1.
<P15_S3WKS>-OVERH = 1.

ENDLOOP.

LOOP AT IT_P15_S3WKS INTO WA_P15_S3WKS.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_P15_S3WKS-HOLIH, sy-vline,
  WA_P15_S3WKS-ABSEH, sy-vline,
  WA_P15_S3WKS-XILLN, sy-vline,
  WA_P15_S3WKS-XMATE, sy-vline,
  WA_P15_S3WKS-XBREF, sy-vline,
  WA_P15_S3WKS-HBREF, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_P15_S3WKS 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_S3WKS 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_S3WKS INTO WA_P15_S3WKS.


*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_S3WKS_STR, 
WEEKN TYPE STRING,
BEGWK TYPE STRING,
ENDWK TYPE STRING,
WORKH TYPE STRING,
OVERH TYPE STRING,
HOLIH TYPE STRING,
ABSEH TYPE STRING,
XILLN TYPE STRING,
XMATE TYPE STRING,
XBREF TYPE STRING,
HBREF TYPE STRING,
XLA88 TYPE STRING,
XCIG1 TYPE STRING,
XCIG2 TYPE STRING,
XLEAV TYPE STRING,
XBLOO TYPE STRING,
XINDE TYPE STRING,
XRETR TYPE STRING,
WEEKB TYPE STRING,
DAYSB TYPE STRING,
INTEH TYPE STRING,
PERNR TYPE STRING,
ENDDA TYPE STRING,
BEGDA TYPE STRING,
BOX37 TYPE STRING,
BOX38 TYPE STRING,
BOX39 TYPE STRING,
BOX40 TYPE STRING,
BOX41 TYPE STRING,
BOX42 TYPE STRING,
BOX43 TYPE STRING,
BOX44 TYPE STRING,
BOX45 TYPE STRING,
BOX46 TYPE STRING,
BOX47 TYPE STRING,
BOX48 TYPE STRING,
BOX49 TYPE STRING,
BOX50 TYPE STRING,
BOX51 TYPE STRING,
BOX52 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_P15_S3WKS_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_S3WKS_STR-WEEKN sy-vline 
WA_P15_S3WKS_STR-BEGWK sy-vline 
WA_P15_S3WKS_STR-ENDWK sy-vline 
WA_P15_S3WKS_STR-WORKH sy-vline 
WA_P15_S3WKS_STR-OVERH sy-vline 
WA_P15_S3WKS_STR-HOLIH sy-vline 
WA_P15_S3WKS_STR-ABSEH sy-vline 
WA_P15_S3WKS_STR-XILLN sy-vline 
WA_P15_S3WKS_STR-XMATE sy-vline 
WA_P15_S3WKS_STR-XBREF sy-vline 
WA_P15_S3WKS_STR-HBREF sy-vline 
WA_P15_S3WKS_STR-XLA88 sy-vline 
WA_P15_S3WKS_STR-XCIG1 sy-vline 
WA_P15_S3WKS_STR-XCIG2 sy-vline 
WA_P15_S3WKS_STR-XLEAV sy-vline 
WA_P15_S3WKS_STR-XBLOO sy-vline 
WA_P15_S3WKS_STR-XINDE sy-vline 
WA_P15_S3WKS_STR-XRETR sy-vline 
WA_P15_S3WKS_STR-WEEKB sy-vline 
WA_P15_S3WKS_STR-DAYSB sy-vline 
WA_P15_S3WKS_STR-INTEH sy-vline 
WA_P15_S3WKS_STR-PERNR sy-vline 
WA_P15_S3WKS_STR-ENDDA sy-vline 
WA_P15_S3WKS_STR-BEGDA sy-vline 
WA_P15_S3WKS_STR-BOX37 sy-vline 
WA_P15_S3WKS_STR-BOX38 sy-vline 
WA_P15_S3WKS_STR-BOX39 sy-vline 
WA_P15_S3WKS_STR-BOX40 sy-vline 
WA_P15_S3WKS_STR-BOX41 sy-vline 
WA_P15_S3WKS_STR-BOX42 sy-vline 
WA_P15_S3WKS_STR-BOX43 sy-vline 
WA_P15_S3WKS_STR-BOX44 sy-vline 
WA_P15_S3WKS_STR-BOX45 sy-vline 
WA_P15_S3WKS_STR-BOX46 sy-vline 
WA_P15_S3WKS_STR-BOX47 sy-vline 
WA_P15_S3WKS_STR-BOX48 sy-vline 
WA_P15_S3WKS_STR-BOX49 sy-vline 
WA_P15_S3WKS_STR-BOX50 sy-vline 
WA_P15_S3WKS_STR-BOX51 sy-vline 
WA_P15_S3WKS_STR-BOX52 sy-vline      INTO ld_text SEPARATED BY SPACE.

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