ABAP Select data from SAP table PIQRULEACCESSSTRUC into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PIQRULEACCESSSTRUC
*  INTO TABLE @DATA(IT_PIQRULEACCESSSTRUC2).
*--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_PIQRULEACCESSSTRUC INDEX 1 INTO DATA(WA_PIQRULEACCESSSTRUC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PIQRULEACCESSSTRUC>-PLVAR = 1.
<PIQRULEACCESSSTRUC>-PIQRULESTARTOBJ = 1.
<PIQRULEACCESSSTRUC>-PIQRULEENDOBJ = 1.
<PIQRULEACCESSSTRUC>-PIQRULEACCESSDIRDOWN = 1.
<PIQRULEACCESSSTRUC>-PIQRULEACCESSDIRUP = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PIQRULEACCESSSTRUC-PIQRULEACADOVERVIEW, sy-vline,
  WA_PIQRULEACCESSSTRUC-PIQRULECUSTOVERVIEW, sy-vline,
  WA_PIQRULEACCESSSTRUC-PIQRULESINGLEACADOVERVIEW, sy-vline,
  WA_PIQRULEACCESSSTRUC-OTYPE, sy-vline,
  WA_PIQRULEACCESSSTRUC-OTEXT, sy-vline,
  WA_PIQRULEACCESSSTRUC-SHORT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PIQRULEACCESSSTRUC 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_PIQRULEACCESSSTRUC 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_PIQRULEACCESSSTRUC INTO WA_PIQRULEACCESSSTRUC.


*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_PIQRULEACCESSSTRUC_STR, 
PLVAR TYPE STRING,
PIQRULESTARTOBJ TYPE STRING,
PIQRULEENDOBJ TYPE STRING,
PIQRULEACCESSDIRDOWN TYPE STRING,
PIQRULEACCESSDIRUP TYPE STRING,
PIQRULEACADOVERVIEW TYPE STRING,
PIQRULECUSTOVERVIEW TYPE STRING,
PIQRULESINGLEACADOVERVIEW TYPE STRING,
OTYPE TYPE STRING,
OTEXT TYPE STRING,
SHORT TYPE STRING,
KEYDATE TYPE STRING,
OBJID TYPE STRING,
SEARK TYPE STRING,
STEXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PIQRULEACCESSSTRUC_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_PIQRULEACCESSSTRUC_STR-PLVAR sy-vline 
WA_PIQRULEACCESSSTRUC_STR-PIQRULESTARTOBJ sy-vline 
WA_PIQRULEACCESSSTRUC_STR-PIQRULEENDOBJ sy-vline 
WA_PIQRULEACCESSSTRUC_STR-PIQRULEACCESSDIRDOWN sy-vline 
WA_PIQRULEACCESSSTRUC_STR-PIQRULEACCESSDIRUP sy-vline 
WA_PIQRULEACCESSSTRUC_STR-PIQRULEACADOVERVIEW sy-vline 
WA_PIQRULEACCESSSTRUC_STR-PIQRULECUSTOVERVIEW sy-vline 
WA_PIQRULEACCESSSTRUC_STR-PIQRULESINGLEACADOVERVIEW sy-vline 
WA_PIQRULEACCESSSTRUC_STR-OTYPE sy-vline 
WA_PIQRULEACCESSSTRUC_STR-OTEXT sy-vline 
WA_PIQRULEACCESSSTRUC_STR-SHORT sy-vline 
WA_PIQRULEACCESSSTRUC_STR-KEYDATE sy-vline 
WA_PIQRULEACCESSSTRUC_STR-OBJID sy-vline 
WA_PIQRULEACCESSSTRUC_STR-SEARK sy-vline 
WA_PIQRULEACCESSSTRUC_STR-STEXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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