ABAP Select data from SAP table PIQCONFERQEXT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PIQCONFERQEXT
*  INTO TABLE @DATA(IT_PIQCONFERQEXT2).
*--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_PIQCONFERQEXT INDEX 1 INTO DATA(WA_PIQCONFERQEXT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PIQCONFERQEXT>-STUDENT_ID = 1.
<PIQCONFERQEXT>-NORMVAL = 1.
<PIQCONFERQEXT>-GRADESYMBOL = 1.
<PIQCONFERQEXT>-SCALE = 1.
<PIQCONFERQEXT>-CQNOTE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PIQCONFERQEXT-CONF_COMMENT, sy-vline,
  WA_PIQCONFERQEXT-CONFER_DATE, sy-vline,
  WA_PIQCONFERQEXT-AYEAR, sy-vline,
  WA_PIQCONFERQEXT-APERIOD, sy-vline,
  WA_PIQCONFERQEXT-VALID_FROM, sy-vline,
  WA_PIQCONFERQEXT-VALID_TO, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PIQCONFERQEXT 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_PIQCONFERQEXT 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_PIQCONFERQEXT INTO WA_PIQCONFERQEXT.


*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 ISOLA, internal->external for field FINALW_LANGU
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_PIQCONFERQEXT-FINALW_LANGU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PIQCONFERQEXT-FINALW_LANGU.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field FINALW_LANGUALT
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_PIQCONFERQEXT-FINALW_LANGUALT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PIQCONFERQEXT-FINALW_LANGUALT.
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_PIQCONFERQEXT_STR, 
STUDENT_ID TYPE STRING,
NORMVAL TYPE STRING,
GRADESYMBOL TYPE STRING,
SCALE TYPE STRING,
CQNOTE TYPE STRING,
CONF_COMMENT TYPE STRING,
CONFER_DATE TYPE STRING,
AYEAR TYPE STRING,
APERIOD TYPE STRING,
VALID_FROM TYPE STRING,
VALID_TO TYPE STRING,
TRANSFERRED TYPE STRING,
CQ_ID TYPE STRING,
PERIDFORCQ TYPE STRING,
PERIDFORCQUNIT TYPE STRING,
REFOBJ_OTYPE TYPE STRING,
REFOBJ_REALO TYPE STRING,
COBOK TYPE STRING,
STAGE TYPE STRING,
REFPROC_GUIDTYPE TYPE STRING,
REFPROC_GUID TYPE STRING,
DIPLOMANAME TYPE STRING,
FINALW_ID TYPE STRING,
FINALW_TITLE TYPE STRING,
FINALW_LANGU TYPE STRING,
FINALW_TITLEALT TYPE STRING,
FINALW_LANGUALT TYPE STRING,
ACADHONOR_SYM TYPE STRING,
ACADHONOR_GRADE TYPE STRING,
ACADHONOR_SCALE TYPE STRING,
NOT_COMPLETED TYPE STRING,
REGNUM TYPE STRING,
CQSHORT TYPE STRING,
CQSTEXT TYPE STRING,
REFOBJSHORT TYPE STRING,
REFOBJSTEXT TYPE STRING,
ID TYPE STRING,
PERIDFORCQUNITTXT TYPE STRING,
AYEARTXT TYPE STRING,
APERIODTXT TYPE STRING,
STAGETXT TYPE STRING,
CESHORT TYPE STRING,
CESTEXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PIQCONFERQEXT_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_PIQCONFERQEXT_STR-STUDENT_ID sy-vline 
WA_PIQCONFERQEXT_STR-NORMVAL sy-vline 
WA_PIQCONFERQEXT_STR-GRADESYMBOL sy-vline 
WA_PIQCONFERQEXT_STR-SCALE sy-vline 
WA_PIQCONFERQEXT_STR-CQNOTE sy-vline 
WA_PIQCONFERQEXT_STR-CONF_COMMENT sy-vline 
WA_PIQCONFERQEXT_STR-CONFER_DATE sy-vline 
WA_PIQCONFERQEXT_STR-AYEAR sy-vline 
WA_PIQCONFERQEXT_STR-APERIOD sy-vline 
WA_PIQCONFERQEXT_STR-VALID_FROM sy-vline 
WA_PIQCONFERQEXT_STR-VALID_TO sy-vline 
WA_PIQCONFERQEXT_STR-TRANSFERRED sy-vline 
WA_PIQCONFERQEXT_STR-CQ_ID sy-vline 
WA_PIQCONFERQEXT_STR-PERIDFORCQ sy-vline 
WA_PIQCONFERQEXT_STR-PERIDFORCQUNIT sy-vline 
WA_PIQCONFERQEXT_STR-REFOBJ_OTYPE sy-vline 
WA_PIQCONFERQEXT_STR-REFOBJ_REALO sy-vline 
WA_PIQCONFERQEXT_STR-COBOK sy-vline 
WA_PIQCONFERQEXT_STR-STAGE sy-vline 
WA_PIQCONFERQEXT_STR-REFPROC_GUIDTYPE sy-vline 
WA_PIQCONFERQEXT_STR-REFPROC_GUID sy-vline 
WA_PIQCONFERQEXT_STR-DIPLOMANAME sy-vline 
WA_PIQCONFERQEXT_STR-FINALW_ID sy-vline 
WA_PIQCONFERQEXT_STR-FINALW_TITLE sy-vline 
WA_PIQCONFERQEXT_STR-FINALW_LANGU sy-vline 
WA_PIQCONFERQEXT_STR-FINALW_TITLEALT sy-vline 
WA_PIQCONFERQEXT_STR-FINALW_LANGUALT sy-vline 
WA_PIQCONFERQEXT_STR-ACADHONOR_SYM sy-vline 
WA_PIQCONFERQEXT_STR-ACADHONOR_GRADE sy-vline 
WA_PIQCONFERQEXT_STR-ACADHONOR_SCALE sy-vline 
WA_PIQCONFERQEXT_STR-NOT_COMPLETED sy-vline 
WA_PIQCONFERQEXT_STR-REGNUM sy-vline 
WA_PIQCONFERQEXT_STR-CQSHORT sy-vline 
WA_PIQCONFERQEXT_STR-CQSTEXT sy-vline 
WA_PIQCONFERQEXT_STR-REFOBJSHORT sy-vline 
WA_PIQCONFERQEXT_STR-REFOBJSTEXT sy-vline 
WA_PIQCONFERQEXT_STR-ID sy-vline 
WA_PIQCONFERQEXT_STR-PERIDFORCQUNITTXT sy-vline 
WA_PIQCONFERQEXT_STR-AYEARTXT sy-vline 
WA_PIQCONFERQEXT_STR-APERIODTXT sy-vline 
WA_PIQCONFERQEXT_STR-STAGETXT sy-vline 
WA_PIQCONFERQEXT_STR-CESHORT sy-vline 
WA_PIQCONFERQEXT_STR-CESTEXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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