ABAP Select data from SAP table PIQBW_PI into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PIQBW_PI
*  INTO TABLE @DATA(IT_PIQBW_PI2).
*--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_PIQBW_PI INDEX 1 INTO DATA(WA_PIQBW_PI2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PIQBW_PI>-PINDEX_ID = 1.
<PIQBW_PI>-CALCPOINT_ID = 1.
<PIQBW_PI>-BPARTNER = 1.
<PIQBW_PI>-STUDNR = 1.
<PIQBW_PI>-TIMESTAMP = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PIQBW_PI-CALC_DATE, sy-vline,
  WA_PIQBW_PI-CALC_TIME, sy-vline,
  WA_PIQBW_PI-CALC_TIMEZONE, sy-vline,
  WA_PIQBW_PI-ACAD_YEAR, sy-vline,
  WA_PIQBW_PI-ACAD_SESSION, sy-vline,
  WA_PIQBW_PI-PROGRAM_TYPE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PIQBW_PI 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_PIQBW_PI 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_PIQBW_PI INTO WA_PIQBW_PI.


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

*Conversion exit PIQST, internal->external for field STUDNR
CALL FUNCTION 'CONVERSION_EXIT_PIQST_OUTPUT'
  EXPORTING
    input =                      WA_PIQBW_PI-STUDNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PIQBW_PI-STUDNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field INDEX_UNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_PIQBW_PI-INDEX_UNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PIQBW_PI-INDEX_UNIT.
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_PIQBW_PI_STR, 
PINDEX_ID TYPE STRING,
CALCPOINT_ID TYPE STRING,
BPARTNER TYPE STRING,
STUDNR TYPE STRING,
TIMESTAMP TYPE STRING,
CALC_DATE TYPE STRING,
CALC_TIME TYPE STRING,
CALC_TIMEZONE TYPE STRING,
ACAD_YEAR TYPE STRING,
ACAD_SESSION TYPE STRING,
PROGRAM_TYPE TYPE STRING,
PROGRAM_OBJECTID TYPE STRING,
PROGRESS_CAT TYPE STRING,
CHECK_FROM TYPE STRING,
CHECK_TO TYPE STRING,
PERF_INDEX TYPE STRING,
GRADE TYPE STRING,
GRADE_SYMBOL TYPE STRING,
GRADE_SCALE TYPE STRING,
INDEX_VALUE TYPE STRING,
INDEX_UNIT TYPE STRING,
DEGREE_RELY TYPE STRING,
RECORDMODE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PIQBW_PI_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_PIQBW_PI_STR-PINDEX_ID sy-vline 
WA_PIQBW_PI_STR-CALCPOINT_ID sy-vline 
WA_PIQBW_PI_STR-BPARTNER sy-vline 
WA_PIQBW_PI_STR-STUDNR sy-vline 
WA_PIQBW_PI_STR-TIMESTAMP sy-vline 
WA_PIQBW_PI_STR-CALC_DATE sy-vline 
WA_PIQBW_PI_STR-CALC_TIME sy-vline 
WA_PIQBW_PI_STR-CALC_TIMEZONE sy-vline 
WA_PIQBW_PI_STR-ACAD_YEAR sy-vline 
WA_PIQBW_PI_STR-ACAD_SESSION sy-vline 
WA_PIQBW_PI_STR-PROGRAM_TYPE sy-vline 
WA_PIQBW_PI_STR-PROGRAM_OBJECTID sy-vline 
WA_PIQBW_PI_STR-PROGRESS_CAT sy-vline 
WA_PIQBW_PI_STR-CHECK_FROM sy-vline 
WA_PIQBW_PI_STR-CHECK_TO sy-vline 
WA_PIQBW_PI_STR-PERF_INDEX sy-vline 
WA_PIQBW_PI_STR-GRADE sy-vline 
WA_PIQBW_PI_STR-GRADE_SYMBOL sy-vline 
WA_PIQBW_PI_STR-GRADE_SCALE sy-vline 
WA_PIQBW_PI_STR-INDEX_VALUE sy-vline 
WA_PIQBW_PI_STR-INDEX_UNIT sy-vline 
WA_PIQBW_PI_STR-DEGREE_RELY sy-vline 
WA_PIQBW_PI_STR-RECORDMODE sy-vline      INTO ld_text SEPARATED BY SPACE.

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