ABAP Select data from SAP table PIQBW_STACAD into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PIQBW_STACAD
*  INTO TABLE @DATA(IT_PIQBW_STACAD2).
*--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_PIQBW_STACAD INDEX 1 INTO DATA(WA_PIQBW_STACAD2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PIQBW_STACAD>-STUDNR = 1.
<PIQBW_STACAD>-ST_OBJID = 1.
<PIQBW_STACAD>-SC_OBJID = 1.
<PIQBW_STACAD>-CS_OBJID = 1.
<PIQBW_STACAD>-ACAD_PROCESS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PIQBW_STACAD-ACAD_RELN, sy-vline,
  WA_PIQBW_STACAD-ISTAT, sy-vline,
  WA_PIQBW_STACAD-BEGDA_PROCESS, sy-vline,
  WA_PIQBW_STACAD-ENDDA_PROCESS, sy-vline,
  WA_PIQBW_STACAD-SUBTY, sy-vline,
  WA_PIQBW_STACAD-CHOICE_NO, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PIQBW_STACAD 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_PIQBW_STACAD 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_PIQBW_STACAD INTO WA_PIQBW_STACAD.


*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 PIQST, internal->external for field STUDNR
CALL FUNCTION 'CONVERSION_EXIT_PIQST_OUTPUT'
  EXPORTING
    input =                      WA_PIQBW_STACAD-STUDNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PIQBW_STACAD-STUDNR.
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_PIQBW_STACAD_STR, 
STUDNR TYPE STRING,
ST_OBJID TYPE STRING,
SC_OBJID TYPE STRING,
CS_OBJID TYPE STRING,
ACAD_PROCESS TYPE STRING,
ACAD_RELN TYPE STRING,
ISTAT TYPE STRING,
BEGDA_PROCESS TYPE STRING,
ENDDA_PROCESS TYPE STRING,
SUBTY TYPE STRING,
CHOICE_NO TYPE STRING,
ADM_AYEAR TYPE STRING,
ADM_PERID TYPE STRING,
ADM_ACLEVEL TYPE STRING,
ADM_PROGCLASS TYPE STRING,
ADM_PARTT TYPE STRING,
ADM_CATEG TYPE STRING,
ADM_ENRCATEG TYPE STRING,
ADM_CODE TYPE STRING,
ADM_PERCT TYPE STRING,
ADM_STATUS_SUP TYPE STRING,
ADM_DEC TYPE STRING,
ADM_RECPT TYPE STRING,
ADM_WITH_DECL TYPE STRING,
ADM_GUID TYPE STRING,
ADM_QMNUM TYPE STRING,
COKEY TYPE STRING,
AEDTM TYPE STRING,
UNAME TYPE STRING,
REGAPPTYPE TYPE STRING,
REGREASON TYPE STRING,
REGDATE TYPE STRING,
DERAPPTYPE TYPE STRING,
DERREASON TYPE STRING,
DERDATE TYPE STRING,
EXAMREG TYPE STRING,
PR_STATUS TYPE STRING,
PRS_STATE TYPE STRING,
APPTYPE TYPE STRING,
REASON TYPE STRING,
ACLEVEL TYPE STRING,
FEEFL TYPE STRING,
PERCT TYPE STRING,
REGCLASS TYPE STRING,
CANCPROCESS TYPE STRING,
CANCREASON TYPE STRING,
CANCDATE TYPE STRING,
END_PROCESS TYPE STRING,
END_REASON TYPE STRING,
END_KEY_DATE TYPE STRING,
LAST_ATTEND TYPE STRING,
PRIOX TYPE STRING,
REG_PARTT TYPE STRING,
REG_PROGCLASS TYPE STRING,
REG_ENRCATEG TYPE STRING,
RECORDMODE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PIQBW_STACAD_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_PIQBW_STACAD_STR-STUDNR sy-vline 
WA_PIQBW_STACAD_STR-ST_OBJID sy-vline 
WA_PIQBW_STACAD_STR-SC_OBJID sy-vline 
WA_PIQBW_STACAD_STR-CS_OBJID sy-vline 
WA_PIQBW_STACAD_STR-ACAD_PROCESS sy-vline 
WA_PIQBW_STACAD_STR-ACAD_RELN sy-vline 
WA_PIQBW_STACAD_STR-ISTAT sy-vline 
WA_PIQBW_STACAD_STR-BEGDA_PROCESS sy-vline 
WA_PIQBW_STACAD_STR-ENDDA_PROCESS sy-vline 
WA_PIQBW_STACAD_STR-SUBTY sy-vline 
WA_PIQBW_STACAD_STR-CHOICE_NO sy-vline 
WA_PIQBW_STACAD_STR-ADM_AYEAR sy-vline 
WA_PIQBW_STACAD_STR-ADM_PERID sy-vline 
WA_PIQBW_STACAD_STR-ADM_ACLEVEL sy-vline 
WA_PIQBW_STACAD_STR-ADM_PROGCLASS sy-vline 
WA_PIQBW_STACAD_STR-ADM_PARTT sy-vline 
WA_PIQBW_STACAD_STR-ADM_CATEG sy-vline 
WA_PIQBW_STACAD_STR-ADM_ENRCATEG sy-vline 
WA_PIQBW_STACAD_STR-ADM_CODE sy-vline 
WA_PIQBW_STACAD_STR-ADM_PERCT sy-vline 
WA_PIQBW_STACAD_STR-ADM_STATUS_SUP sy-vline 
WA_PIQBW_STACAD_STR-ADM_DEC sy-vline 
WA_PIQBW_STACAD_STR-ADM_RECPT sy-vline 
WA_PIQBW_STACAD_STR-ADM_WITH_DECL sy-vline 
WA_PIQBW_STACAD_STR-ADM_GUID sy-vline 
WA_PIQBW_STACAD_STR-ADM_QMNUM sy-vline 
WA_PIQBW_STACAD_STR-COKEY sy-vline 
WA_PIQBW_STACAD_STR-AEDTM sy-vline 
WA_PIQBW_STACAD_STR-UNAME sy-vline 
WA_PIQBW_STACAD_STR-REGAPPTYPE sy-vline 
WA_PIQBW_STACAD_STR-REGREASON sy-vline 
WA_PIQBW_STACAD_STR-REGDATE sy-vline 
WA_PIQBW_STACAD_STR-DERAPPTYPE sy-vline 
WA_PIQBW_STACAD_STR-DERREASON sy-vline 
WA_PIQBW_STACAD_STR-DERDATE sy-vline 
WA_PIQBW_STACAD_STR-EXAMREG sy-vline 
WA_PIQBW_STACAD_STR-PR_STATUS sy-vline 
WA_PIQBW_STACAD_STR-PRS_STATE sy-vline 
WA_PIQBW_STACAD_STR-APPTYPE sy-vline 
WA_PIQBW_STACAD_STR-REASON sy-vline 
WA_PIQBW_STACAD_STR-ACLEVEL sy-vline 
WA_PIQBW_STACAD_STR-FEEFL sy-vline 
WA_PIQBW_STACAD_STR-PERCT sy-vline 
WA_PIQBW_STACAD_STR-REGCLASS sy-vline 
WA_PIQBW_STACAD_STR-CANCPROCESS sy-vline 
WA_PIQBW_STACAD_STR-CANCREASON sy-vline 
WA_PIQBW_STACAD_STR-CANCDATE sy-vline 
WA_PIQBW_STACAD_STR-END_PROCESS sy-vline 
WA_PIQBW_STACAD_STR-END_REASON sy-vline 
WA_PIQBW_STACAD_STR-END_KEY_DATE sy-vline 
WA_PIQBW_STACAD_STR-LAST_ATTEND sy-vline 
WA_PIQBW_STACAD_STR-PRIOX sy-vline 
WA_PIQBW_STACAD_STR-REG_PARTT sy-vline 
WA_PIQBW_STACAD_STR-REG_PROGCLASS sy-vline 
WA_PIQBW_STACAD_STR-REG_ENRCATEG sy-vline 
WA_PIQBW_STACAD_STR-RECORDMODE sy-vline      INTO ld_text SEPARATED BY SPACE.

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