ABAP Select data from SAP table PIQISH_INTREG_POWL into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PIQISH_INTREG_POWL
*  INTO TABLE @DATA(IT_PIQISH_INTREG_POWL2).
*--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_PIQISH_INTREG_POWL INDEX 1 INTO DATA(WA_PIQISH_INTREG_POWL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PIQISH_INTREG_POWL>-STNUMBER = 1.
<PIQISH_INTREG_POWL>-OBJID = 1.
<PIQISH_INTREG_POWL>-INST_PARTNER = 1.
<PIQISH_INTREG_POWL>-CONTACT_PARTNER = 1.
<PIQISH_INTREG_POWL>-ACAD_YEAR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PIQISH_INTREG_POWL-ACAD_SESSION, sy-vline,
  WA_PIQISH_INTREG_POWL-START_DATE, sy-vline,
  WA_PIQISH_INTREG_POWL-END_DATE, sy-vline,
  WA_PIQISH_INTREG_POWL-TEXT, sy-vline,
  WA_PIQISH_INTREG_POWL-STATUS, sy-vline,
  WA_PIQISH_INTREG_POWL-CATEGORY1, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PIQISH_INTREG_POWL 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_PIQISH_INTREG_POWL 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_PIQISH_INTREG_POWL INTO WA_PIQISH_INTREG_POWL.


*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 STNUMBER
CALL FUNCTION 'CONVERSION_EXIT_PIQST_OUTPUT'
  EXPORTING
    input =                      WA_PIQISH_INTREG_POWL-STNUMBER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PIQISH_INTREG_POWL-STNUMBER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field INST_PARTNER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PIQISH_INTREG_POWL-INST_PARTNER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PIQISH_INTREG_POWL-INST_PARTNER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field CONTACT_PARTNER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PIQISH_INTREG_POWL-CONTACT_PARTNER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PIQISH_INTREG_POWL-CONTACT_PARTNER.
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_PIQISH_INTREG_POWL_STR, 
STNUMBER TYPE STRING,
OBJID TYPE STRING,
INST_PARTNER TYPE STRING,
CONTACT_PARTNER TYPE STRING,
ACAD_YEAR TYPE STRING,
ACAD_SESSION TYPE STRING,
START_DATE TYPE STRING,
END_DATE TYPE STRING,
TEXT TYPE STRING,
STATUS TYPE STRING,
CATEGORY1 TYPE STRING,
CATEGORY2 TYPE STRING,
CATEGORY3 TYPE STRING,
CATEGORY4 TYPE STRING,
CATEGORY5 TYPE STRING,
ATTRIBUTE1 TYPE STRING,
ATTRIBUTE2 TYPE STRING,
ATTRIBUTE3 TYPE STRING,
ATTRIBUTE4 TYPE STRING,
ATTRIBUTE5 TYPE STRING,
GUIDTYPE TYPE STRING,
GUID TYPE STRING,
SC_OBJID TYPE STRING,
ACLEVEL TYPE STRING,
REF_OTYPE TYPE STRING,
REF_OBJID TYPE STRING,
NOTE_GUID TYPE STRING,
DURATION TYPE STRING,
UNIT TYPE STRING,
ISHREG_ID TYPE STRING,
INST_PARTNER_TXT TYPE STRING,
CONTACT_PARTNER_TXT TYPE STRING,
ACAD_YEAR_TXT TYPE STRING,
ACAD_SESSION_TXT TYPE STRING,
STATUS_TXT TYPE STRING,
CATEGORY1_TXT TYPE STRING,
CATEGORY2_TXT TYPE STRING,
CATEGORY3_TXT TYPE STRING,
CATEGORY4_TXT TYPE STRING,
CATEGORY5_TXT TYPE STRING,
SC_SHORT TYPE STRING,
SC_STEXT TYPE STRING,
ACLEVEL_TXT TYPE STRING,
REF_SHORT TYPE STRING,
REF_STEXT TYPE STRING,
UNIT_TXT TYPE STRING,
STUDENT_FIRSTNAME TYPE STRING,
STUDENT_LASTNAME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PIQISH_INTREG_POWL_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_PIQISH_INTREG_POWL_STR-STNUMBER sy-vline 
WA_PIQISH_INTREG_POWL_STR-OBJID sy-vline 
WA_PIQISH_INTREG_POWL_STR-INST_PARTNER sy-vline 
WA_PIQISH_INTREG_POWL_STR-CONTACT_PARTNER sy-vline 
WA_PIQISH_INTREG_POWL_STR-ACAD_YEAR sy-vline 
WA_PIQISH_INTREG_POWL_STR-ACAD_SESSION sy-vline 
WA_PIQISH_INTREG_POWL_STR-START_DATE sy-vline 
WA_PIQISH_INTREG_POWL_STR-END_DATE sy-vline 
WA_PIQISH_INTREG_POWL_STR-TEXT sy-vline 
WA_PIQISH_INTREG_POWL_STR-STATUS sy-vline 
WA_PIQISH_INTREG_POWL_STR-CATEGORY1 sy-vline 
WA_PIQISH_INTREG_POWL_STR-CATEGORY2 sy-vline 
WA_PIQISH_INTREG_POWL_STR-CATEGORY3 sy-vline 
WA_PIQISH_INTREG_POWL_STR-CATEGORY4 sy-vline 
WA_PIQISH_INTREG_POWL_STR-CATEGORY5 sy-vline 
WA_PIQISH_INTREG_POWL_STR-ATTRIBUTE1 sy-vline 
WA_PIQISH_INTREG_POWL_STR-ATTRIBUTE2 sy-vline 
WA_PIQISH_INTREG_POWL_STR-ATTRIBUTE3 sy-vline 
WA_PIQISH_INTREG_POWL_STR-ATTRIBUTE4 sy-vline 
WA_PIQISH_INTREG_POWL_STR-ATTRIBUTE5 sy-vline 
WA_PIQISH_INTREG_POWL_STR-GUIDTYPE sy-vline 
WA_PIQISH_INTREG_POWL_STR-GUID sy-vline 
WA_PIQISH_INTREG_POWL_STR-SC_OBJID sy-vline 
WA_PIQISH_INTREG_POWL_STR-ACLEVEL sy-vline 
WA_PIQISH_INTREG_POWL_STR-REF_OTYPE sy-vline 
WA_PIQISH_INTREG_POWL_STR-REF_OBJID sy-vline 
WA_PIQISH_INTREG_POWL_STR-NOTE_GUID sy-vline 
WA_PIQISH_INTREG_POWL_STR-DURATION sy-vline 
WA_PIQISH_INTREG_POWL_STR-UNIT sy-vline 
WA_PIQISH_INTREG_POWL_STR-ISHREG_ID sy-vline 
WA_PIQISH_INTREG_POWL_STR-INST_PARTNER_TXT sy-vline 
WA_PIQISH_INTREG_POWL_STR-CONTACT_PARTNER_TXT sy-vline 
WA_PIQISH_INTREG_POWL_STR-ACAD_YEAR_TXT sy-vline 
WA_PIQISH_INTREG_POWL_STR-ACAD_SESSION_TXT sy-vline 
WA_PIQISH_INTREG_POWL_STR-STATUS_TXT sy-vline 
WA_PIQISH_INTREG_POWL_STR-CATEGORY1_TXT sy-vline 
WA_PIQISH_INTREG_POWL_STR-CATEGORY2_TXT sy-vline 
WA_PIQISH_INTREG_POWL_STR-CATEGORY3_TXT sy-vline 
WA_PIQISH_INTREG_POWL_STR-CATEGORY4_TXT sy-vline 
WA_PIQISH_INTREG_POWL_STR-CATEGORY5_TXT sy-vline 
WA_PIQISH_INTREG_POWL_STR-SC_SHORT sy-vline 
WA_PIQISH_INTREG_POWL_STR-SC_STEXT sy-vline 
WA_PIQISH_INTREG_POWL_STR-ACLEVEL_TXT sy-vline 
WA_PIQISH_INTREG_POWL_STR-REF_SHORT sy-vline 
WA_PIQISH_INTREG_POWL_STR-REF_STEXT sy-vline 
WA_PIQISH_INTREG_POWL_STR-UNIT_TXT sy-vline 
WA_PIQISH_INTREG_POWL_STR-STUDENT_FIRSTNAME sy-vline 
WA_PIQISH_INTREG_POWL_STR-STUDENT_LASTNAME sy-vline      INTO ld_text SEPARATED BY SPACE.

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