ABAP Select data from SAP table PIQRFC_DISCIPLINES into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PIQRFC_DISCIPLINES
*  INTO TABLE @DATA(IT_PIQRFC_DISCIPLINES2).
*--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_PIQRFC_DISCIPLINES INDEX 1 INTO DATA(WA_PIQRFC_DISCIPLINES2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PIQRFC_DISCIPLINES>-MANDT = 1.
<PIQRFC_DISCIPLINES>-PLVAR = 1.
<PIQRFC_DISCIPLINES>-OTYPE = 1.
<PIQRFC_DISCIPLINES>-OBJID = 1.
<PIQRFC_DISCIPLINES>-SUBTY = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PIQRFC_DISCIPLINES-ISTAT, sy-vline,
  WA_PIQRFC_DISCIPLINES-BEGDA, sy-vline,
  WA_PIQRFC_DISCIPLINES-ENDDA, sy-vline,
  WA_PIQRFC_DISCIPLINES-VARYF, sy-vline,
  WA_PIQRFC_DISCIPLINES-SEQNR, sy-vline,
  WA_PIQRFC_DISCIPLINES-DISZIP, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PIQRFC_DISCIPLINES 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_PIQRFC_DISCIPLINES 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_PIQRFC_DISCIPLINES INTO WA_PIQRFC_DISCIPLINES.


*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_PIQRFC_DISCIPLINES_STR, 
MANDT TYPE STRING,
PLVAR TYPE STRING,
OTYPE TYPE STRING,
OBJID TYPE STRING,
SUBTY TYPE STRING,
ISTAT TYPE STRING,
BEGDA TYPE STRING,
ENDDA TYPE STRING,
VARYF TYPE STRING,
SEQNR TYPE STRING,
DISZIP TYPE STRING,
DISZIPRIMARY TYPE STRING,
DISZIPLIN_TEXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PIQRFC_DISCIPLINES_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_PIQRFC_DISCIPLINES_STR-MANDT sy-vline 
WA_PIQRFC_DISCIPLINES_STR-PLVAR sy-vline 
WA_PIQRFC_DISCIPLINES_STR-OTYPE sy-vline 
WA_PIQRFC_DISCIPLINES_STR-OBJID sy-vline 
WA_PIQRFC_DISCIPLINES_STR-SUBTY sy-vline 
WA_PIQRFC_DISCIPLINES_STR-ISTAT sy-vline 
WA_PIQRFC_DISCIPLINES_STR-BEGDA sy-vline 
WA_PIQRFC_DISCIPLINES_STR-ENDDA sy-vline 
WA_PIQRFC_DISCIPLINES_STR-VARYF sy-vline 
WA_PIQRFC_DISCIPLINES_STR-SEQNR sy-vline 
WA_PIQRFC_DISCIPLINES_STR-DISZIP sy-vline 
WA_PIQRFC_DISCIPLINES_STR-DISZIPRIMARY sy-vline 
WA_PIQRFC_DISCIPLINES_STR-DISZIPLIN_TEXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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