ABAP Select data from SAP table PIQTRHEADER_EXT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PIQTRHEADER_EXT
*  INTO TABLE @DATA(IT_PIQTRHEADER_EXT2).
*--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_PIQTRHEADER_EXT INDEX 1 INTO DATA(WA_PIQTRHEADER_EXT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PIQTRHEADER_EXT>-TRANS_GUID = 1.
<PIQTRHEADER_EXT>-ISSUEDATE = 1.
<PIQTRHEADER_EXT>-TRANSTYPE = 1.
<PIQTRHEADER_EXT>-ISSEO = 1.
<PIQTRHEADER_EXT>-TRANSEO = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PIQTRHEADER_EXT-TRSTATUS, sy-vline,
  WA_PIQTRHEADER_EXT-REGPERIODFROM, sy-vline,
  WA_PIQTRHEADER_EXT-REGPERIODTO, sy-vline,
  WA_PIQTRHEADER_EXT-RANKING, sy-vline,
  WA_PIQTRHEADER_EXT-SIZEOFCLASS, sy-vline,
  WA_PIQTRHEADER_EXT-RETURNINDIC, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PIQTRHEADER_EXT 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_PIQTRHEADER_EXT 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_PIQTRHEADER_EXT INTO WA_PIQTRHEADER_EXT.


*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 CUNIT, internal->external for field TOTEXTCREDTYPE
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_PIQTRHEADER_EXT-TOTEXTCREDTYPE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PIQTRHEADER_EXT-TOTEXTCREDTYPE.
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_PIQTRHEADER_EXT_STR, 
TRANS_GUID TYPE STRING,
ISSUEDATE TYPE STRING,
TRANSTYPE TYPE STRING,
ISSEO TYPE STRING,
TRANSEO TYPE STRING,
TRSTATUS TYPE STRING,
REGPERIODFROM TYPE STRING,
REGPERIODTO TYPE STRING,
RANKING TYPE STRING,
SIZEOFCLASS TYPE STRING,
RETURNINDIC TYPE STRING,
RETURNDATE TYPE STRING,
TOTSELFGPA TYPE STRING,
TOTSELFGPASCALE TYPE STRING,
TOTEXTGPA1 TYPE STRING,
TOTEXTGPA1SCALE TYPE STRING,
TOTEXTGPA2 TYPE STRING,
TOTEXTGPA2SCALE TYPE STRING,
TOTEXTGPA3 TYPE STRING,
TOTEXTGPA3SCALE TYPE STRING,
TOTEXTATMCRED TYPE STRING,
TOTEXTGRDCRED TYPE STRING,
TOTEXTERNCRED TYPE STRING,
TOTEXTCREDTYPE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PIQTRHEADER_EXT_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_PIQTRHEADER_EXT_STR-TRANS_GUID sy-vline 
WA_PIQTRHEADER_EXT_STR-ISSUEDATE sy-vline 
WA_PIQTRHEADER_EXT_STR-TRANSTYPE sy-vline 
WA_PIQTRHEADER_EXT_STR-ISSEO sy-vline 
WA_PIQTRHEADER_EXT_STR-TRANSEO sy-vline 
WA_PIQTRHEADER_EXT_STR-TRSTATUS sy-vline 
WA_PIQTRHEADER_EXT_STR-REGPERIODFROM sy-vline 
WA_PIQTRHEADER_EXT_STR-REGPERIODTO sy-vline 
WA_PIQTRHEADER_EXT_STR-RANKING sy-vline 
WA_PIQTRHEADER_EXT_STR-SIZEOFCLASS sy-vline 
WA_PIQTRHEADER_EXT_STR-RETURNINDIC sy-vline 
WA_PIQTRHEADER_EXT_STR-RETURNDATE sy-vline 
WA_PIQTRHEADER_EXT_STR-TOTSELFGPA sy-vline 
WA_PIQTRHEADER_EXT_STR-TOTSELFGPASCALE sy-vline 
WA_PIQTRHEADER_EXT_STR-TOTEXTGPA1 sy-vline 
WA_PIQTRHEADER_EXT_STR-TOTEXTGPA1SCALE sy-vline 
WA_PIQTRHEADER_EXT_STR-TOTEXTGPA2 sy-vline 
WA_PIQTRHEADER_EXT_STR-TOTEXTGPA2SCALE sy-vline 
WA_PIQTRHEADER_EXT_STR-TOTEXTGPA3 sy-vline 
WA_PIQTRHEADER_EXT_STR-TOTEXTGPA3SCALE sy-vline 
WA_PIQTRHEADER_EXT_STR-TOTEXTATMCRED sy-vline 
WA_PIQTRHEADER_EXT_STR-TOTEXTGRDCRED sy-vline 
WA_PIQTRHEADER_EXT_STR-TOTEXTERNCRED sy-vline 
WA_PIQTRHEADER_EXT_STR-TOTEXTCREDTYPE sy-vline      INTO ld_text SEPARATED BY SPACE.

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