ABAP Select data from SAP table PIQCONFERQ into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PIQCONFERQ
*  INTO TABLE @DATA(IT_PIQCONFERQ2).
*--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_PIQCONFERQ INDEX 1 INTO DATA(WA_PIQCONFERQ2).


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

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

ENDLOOP.

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

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


*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_PIQCONFERQ-FINALW_LANGU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PIQCONFERQ-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_PIQCONFERQ-FINALW_LANGUALT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PIQCONFERQ-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_PIQCONFERQ_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,END OF T_EKKO_STR.
DATA: WA_PIQCONFERQ_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_PIQCONFERQ_STR-STUDENT_ID sy-vline 
WA_PIQCONFERQ_STR-NORMVAL sy-vline 
WA_PIQCONFERQ_STR-GRADESYMBOL sy-vline 
WA_PIQCONFERQ_STR-SCALE sy-vline 
WA_PIQCONFERQ_STR-CQNOTE sy-vline 
WA_PIQCONFERQ_STR-CONF_COMMENT sy-vline 
WA_PIQCONFERQ_STR-CONFER_DATE sy-vline 
WA_PIQCONFERQ_STR-AYEAR sy-vline 
WA_PIQCONFERQ_STR-APERIOD sy-vline 
WA_PIQCONFERQ_STR-VALID_FROM sy-vline 
WA_PIQCONFERQ_STR-VALID_TO sy-vline 
WA_PIQCONFERQ_STR-TRANSFERRED sy-vline 
WA_PIQCONFERQ_STR-CQ_ID sy-vline 
WA_PIQCONFERQ_STR-PERIDFORCQ sy-vline 
WA_PIQCONFERQ_STR-PERIDFORCQUNIT sy-vline 
WA_PIQCONFERQ_STR-REFOBJ_OTYPE sy-vline 
WA_PIQCONFERQ_STR-REFOBJ_REALO sy-vline 
WA_PIQCONFERQ_STR-COBOK sy-vline 
WA_PIQCONFERQ_STR-STAGE sy-vline 
WA_PIQCONFERQ_STR-REFPROC_GUIDTYPE sy-vline 
WA_PIQCONFERQ_STR-REFPROC_GUID sy-vline 
WA_PIQCONFERQ_STR-DIPLOMANAME sy-vline 
WA_PIQCONFERQ_STR-FINALW_ID sy-vline 
WA_PIQCONFERQ_STR-FINALW_TITLE sy-vline 
WA_PIQCONFERQ_STR-FINALW_LANGU sy-vline 
WA_PIQCONFERQ_STR-FINALW_TITLEALT sy-vline 
WA_PIQCONFERQ_STR-FINALW_LANGUALT sy-vline 
WA_PIQCONFERQ_STR-ACADHONOR_SYM sy-vline 
WA_PIQCONFERQ_STR-ACADHONOR_GRADE sy-vline 
WA_PIQCONFERQ_STR-ACADHONOR_SCALE sy-vline 
WA_PIQCONFERQ_STR-NOT_COMPLETED sy-vline 
WA_PIQCONFERQ_STR-REGNUM sy-vline      INTO ld_text SEPARATED BY SPACE.

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