ABAP Select data from SAP table PIQREGSTRUC into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PIQREGSTRUC
*  INTO TABLE @DATA(IT_PIQREGSTRUC2).
*--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_PIQREGSTRUC INDEX 1 INTO DATA(WA_PIQREGSTRUC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PIQREGSTRUC>-STOBJID = 1.
<PIQREGSTRUC>-STUDENT12 = 1.
<PIQREGSTRUC>-STSRK = 1.
<PIQREGSTRUC>-STDTX = 1.
<PIQREGSTRUC>-SCOBJID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PIQREGSTRUC-SCSRK, sy-vline,
  WA_PIQREGSTRUC-SCTXT, sy-vline,
  WA_PIQREGSTRUC-O_OBJID, sy-vline,
  WA_PIQREGSTRUC-O_SRK, sy-vline,
  WA_PIQREGSTRUC-O_TXT, sy-vline,
  WA_PIQREGSTRUC-VARID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PIQREGSTRUC 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_PIQREGSTRUC 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_PIQREGSTRUC INTO WA_PIQREGSTRUC.


*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 STUDENT12
CALL FUNCTION 'CONVERSION_EXIT_PIQST_OUTPUT'
  EXPORTING
    input =                      WA_PIQREGSTRUC-STUDENT12
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PIQREGSTRUC-STUDENT12.
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_PIQREGSTRUC_STR, 
STOBJID TYPE STRING,
STUDENT12 TYPE STRING,
STSRK TYPE STRING,
STDTX TYPE STRING,
SCOBJID TYPE STRING,
SCSRK TYPE STRING,
SCTXT TYPE STRING,
O_OBJID TYPE STRING,
O_SRK TYPE STRING,
O_TXT TYPE STRING,
VARID TYPE STRING,
VARIT TYPE STRING,
AYEAR TYPE STRING,
AYEART TYPE STRING,
PERID TYPE STRING,
PERIT TYPE STRING,
PERCT TYPE STRING,
STBIRTH TYPE STRING,
FEEFL TYPE STRING,
BEGDAT TYPE STRING,
ENDDAT TYPE STRING,
REASONT TYPE STRING,
SELFLAG TYPE STRING,
SRCH_STUD TYPE STRING,
SRCH_BEGDA TYPE STRING,
SRCH_ENDDA TYPE STRING,
SRCH_STUDNAME TYPE STRING,
EXMAT_DAT TYPE STRING,
REASON TYPE STRING,
ACLEVEL TYPE STRING,
ACLEVELT TYPE STRING,
ACLEVELVAR TYPE STRING,
ACLEVELVART TYPE STRING,
TODAYS_DATE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PIQREGSTRUC_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_PIQREGSTRUC_STR-STOBJID sy-vline 
WA_PIQREGSTRUC_STR-STUDENT12 sy-vline 
WA_PIQREGSTRUC_STR-STSRK sy-vline 
WA_PIQREGSTRUC_STR-STDTX sy-vline 
WA_PIQREGSTRUC_STR-SCOBJID sy-vline 
WA_PIQREGSTRUC_STR-SCSRK sy-vline 
WA_PIQREGSTRUC_STR-SCTXT sy-vline 
WA_PIQREGSTRUC_STR-O_OBJID sy-vline 
WA_PIQREGSTRUC_STR-O_SRK sy-vline 
WA_PIQREGSTRUC_STR-O_TXT sy-vline 
WA_PIQREGSTRUC_STR-VARID sy-vline 
WA_PIQREGSTRUC_STR-VARIT sy-vline 
WA_PIQREGSTRUC_STR-AYEAR sy-vline 
WA_PIQREGSTRUC_STR-AYEART sy-vline 
WA_PIQREGSTRUC_STR-PERID sy-vline 
WA_PIQREGSTRUC_STR-PERIT sy-vline 
WA_PIQREGSTRUC_STR-PERCT sy-vline 
WA_PIQREGSTRUC_STR-STBIRTH sy-vline 
WA_PIQREGSTRUC_STR-FEEFL sy-vline 
WA_PIQREGSTRUC_STR-BEGDAT sy-vline 
WA_PIQREGSTRUC_STR-ENDDAT sy-vline 
WA_PIQREGSTRUC_STR-REASONT sy-vline 
WA_PIQREGSTRUC_STR-SELFLAG sy-vline 
WA_PIQREGSTRUC_STR-SRCH_STUD sy-vline 
WA_PIQREGSTRUC_STR-SRCH_BEGDA sy-vline 
WA_PIQREGSTRUC_STR-SRCH_ENDDA sy-vline 
WA_PIQREGSTRUC_STR-SRCH_STUDNAME sy-vline 
WA_PIQREGSTRUC_STR-EXMAT_DAT sy-vline 
WA_PIQREGSTRUC_STR-REASON sy-vline 
WA_PIQREGSTRUC_STR-ACLEVEL sy-vline 
WA_PIQREGSTRUC_STR-ACLEVELT sy-vline 
WA_PIQREGSTRUC_STR-ACLEVELVAR sy-vline 
WA_PIQREGSTRUC_STR-ACLEVELVART sy-vline 
WA_PIQREGSTRUC_STR-TODAYS_DATE sy-vline      INTO ld_text SEPARATED BY SPACE.

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