ABAP Select data from SAP table PIQRCGENERATE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PIQRCGENERATE
*  INTO TABLE @DATA(IT_PIQRCGENERATE2).
*--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_PIQRCGENERATE INDEX 1 INTO DATA(WA_PIQRCGENERATE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PIQRCGENERATE>-MODGRP = 1.
<PIQRCGENERATE>-AUDTYPE = 1.
<PIQRCGENERATE>-PARAVAL = 1.
<PIQRCGENERATE>-STEP = 1.
<PIQRCGENERATE>-REQCAT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PIQRCGENERATE-VERSION, sy-vline,
  WA_PIQRCGENERATE-EVALPATH, sy-vline,
  WA_PIQRCGENERATE-EVALPATH_T, sy-vline,
  WA_PIQRCGENERATE-OTYPE, sy-vline,
  WA_PIQRCGENERATE-OBJID, sy-vline,
  WA_PIQRCGENERATE-OBJSTEXT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PIQRCGENERATE 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_PIQRCGENERATE 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_PIQRCGENERATE INTO WA_PIQRCGENERATE.


*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_PIQRCGENERATE_STR, 
MODGRP TYPE STRING,
AUDTYPE TYPE STRING,
PARAVAL TYPE STRING,
STEP TYPE STRING,
REQCAT TYPE STRING,
VERSION TYPE STRING,
EVALPATH TYPE STRING,
EVALPATH_T TYPE STRING,
OTYPE TYPE STRING,
OBJID TYPE STRING,
OBJSTEXT TYPE STRING,
BEGDA TYPE STRING,
ENDDA TYPE STRING,
REQELEMENTO TYPE STRING,
REQELEMENTSC TYPE STRING,
REQELEMENTCG TYPE STRING,
TESTRUN TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PIQRCGENERATE_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_PIQRCGENERATE_STR-MODGRP sy-vline 
WA_PIQRCGENERATE_STR-AUDTYPE sy-vline 
WA_PIQRCGENERATE_STR-PARAVAL sy-vline 
WA_PIQRCGENERATE_STR-STEP sy-vline 
WA_PIQRCGENERATE_STR-REQCAT sy-vline 
WA_PIQRCGENERATE_STR-VERSION sy-vline 
WA_PIQRCGENERATE_STR-EVALPATH sy-vline 
WA_PIQRCGENERATE_STR-EVALPATH_T sy-vline 
WA_PIQRCGENERATE_STR-OTYPE sy-vline 
WA_PIQRCGENERATE_STR-OBJID sy-vline 
WA_PIQRCGENERATE_STR-OBJSTEXT sy-vline 
WA_PIQRCGENERATE_STR-BEGDA sy-vline 
WA_PIQRCGENERATE_STR-ENDDA sy-vline 
WA_PIQRCGENERATE_STR-REQELEMENTO sy-vline 
WA_PIQRCGENERATE_STR-REQELEMENTSC sy-vline 
WA_PIQRCGENERATE_STR-REQELEMENTCG sy-vline 
WA_PIQRCGENERATE_STR-TESTRUN sy-vline      INTO ld_text SEPARATED BY SPACE.

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