ABAP Select data from SAP table PIQRULESTSC into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PIQRULESTSC
*  INTO TABLE @DATA(IT_PIQRULESTSC2).
*--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_PIQRULESTSC INDEX 1 INTO DATA(WA_PIQRULESTSC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PIQRULESTSC>-PLVAR = 1.
<PIQRULESTSC>-ISTAT = 1.
<PIQRULESTSC>-BEGDA = 1.
<PIQRULESTSC>-ENDDA = 1.
<PIQRULESTSC>-AYEAR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PIQRULESTSC-PERID, sy-vline,
  WA_PIQRULESTSC-ACLEVEL, sy-vline,
  WA_PIQRULESTSC-CHOICE_NO, sy-vline,
  WA_PIQRULESTSC-PARTT, sy-vline,
  WA_PIQRULESTSC-REGDATE, sy-vline,
  WA_PIQRULESTSC-DERDATE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PIQRULESTSC 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_PIQRULESTSC 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_PIQRULESTSC INTO WA_PIQRULESTSC.


*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_PIQRULESTSC_STR, 
PLVAR TYPE STRING,
ISTAT TYPE STRING,
BEGDA TYPE STRING,
ENDDA TYPE STRING,
AYEAR TYPE STRING,
PERID TYPE STRING,
ACLEVEL TYPE STRING,
CHOICE_NO TYPE STRING,
PARTT TYPE STRING,
REGDATE TYPE STRING,
DERDATE TYPE STRING,
ENDDA_DEREG TYPE STRING,
COPDATE TYPE STRING,
DEREGCANCDATE TYPE STRING,
REASON TYPE STRING,
DERREASON TYPE STRING,
COPREASON TYPE STRING,
DEREGCANCREASON TYPE STRING,
REGAPPTYPE TYPE STRING,
DERAPPTYPE TYPE STRING,
APPTYPE TYPE STRING,
ENRCATEG TYPE STRING,
DEGREE_SEEK TYPE STRING,
PROGCLASS TYPE STRING,
PERCT TYPE STRING,
PRIOX TYPE STRING,
REGCLASS TYPE STRING,
MAIN_ACTIVITY TYPE STRING,
OLD_PROGRAM_OBJID TYPE STRING,
NEW_PROGRAM_BEGDA TYPE STRING,
SESS_REGISTS_TRANSFER TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PIQRULESTSC_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_PIQRULESTSC_STR-PLVAR sy-vline 
WA_PIQRULESTSC_STR-ISTAT sy-vline 
WA_PIQRULESTSC_STR-BEGDA sy-vline 
WA_PIQRULESTSC_STR-ENDDA sy-vline 
WA_PIQRULESTSC_STR-AYEAR sy-vline 
WA_PIQRULESTSC_STR-PERID sy-vline 
WA_PIQRULESTSC_STR-ACLEVEL sy-vline 
WA_PIQRULESTSC_STR-CHOICE_NO sy-vline 
WA_PIQRULESTSC_STR-PARTT sy-vline 
WA_PIQRULESTSC_STR-REGDATE sy-vline 
WA_PIQRULESTSC_STR-DERDATE sy-vline 
WA_PIQRULESTSC_STR-ENDDA_DEREG sy-vline 
WA_PIQRULESTSC_STR-COPDATE sy-vline 
WA_PIQRULESTSC_STR-DEREGCANCDATE sy-vline 
WA_PIQRULESTSC_STR-REASON sy-vline 
WA_PIQRULESTSC_STR-DERREASON sy-vline 
WA_PIQRULESTSC_STR-COPREASON sy-vline 
WA_PIQRULESTSC_STR-DEREGCANCREASON sy-vline 
WA_PIQRULESTSC_STR-REGAPPTYPE sy-vline 
WA_PIQRULESTSC_STR-DERAPPTYPE sy-vline 
WA_PIQRULESTSC_STR-APPTYPE sy-vline 
WA_PIQRULESTSC_STR-ENRCATEG sy-vline 
WA_PIQRULESTSC_STR-DEGREE_SEEK sy-vline 
WA_PIQRULESTSC_STR-PROGCLASS sy-vline 
WA_PIQRULESTSC_STR-PERCT sy-vline 
WA_PIQRULESTSC_STR-PRIOX sy-vline 
WA_PIQRULESTSC_STR-REGCLASS sy-vline 
WA_PIQRULESTSC_STR-MAIN_ACTIVITY sy-vline 
WA_PIQRULESTSC_STR-OLD_PROGRAM_OBJID sy-vline 
WA_PIQRULESTSC_STR-NEW_PROGRAM_BEGDA sy-vline 
WA_PIQRULESTSC_STR-SESS_REGISTS_TRANSFER sy-vline      INTO ld_text SEPARATED BY SPACE.

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