ABAP Select data from SAP table PIQCA_RFC_SCHEDULE_ELEMENTS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PIQCA_RFC_SCHEDULE_ELEMENTS
*  INTO TABLE @DATA(IT_PIQCA_RFC_SCHEDULE_ELEMENTS2).
*--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_PIQCA_RFC_SCHEDULE_ELEMENTS INDEX 1 INTO DATA(WA_PIQCA_RFC_SCHEDULE_ELEMENTS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PIQCA_RFC_SCHEDULE_ELEMENTS>-PLVAR = 1.
<PIQCA_RFC_SCHEDULE_ELEMENTS>-OTYPE = 1.
<PIQCA_RFC_SCHEDULE_ELEMENTS>-OBJID = 1.
<PIQCA_RFC_SCHEDULE_ELEMENTS>-BEGUZ = 1.
<PIQCA_RFC_SCHEDULE_ELEMENTS>-ENDUZ = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PIQCA_RFC_SCHEDULE_ELEMENTS-MONDAY, sy-vline,
  WA_PIQCA_RFC_SCHEDULE_ELEMENTS-TUESDAY, sy-vline,
  WA_PIQCA_RFC_SCHEDULE_ELEMENTS-WEDNESDAY, sy-vline,
  WA_PIQCA_RFC_SCHEDULE_ELEMENTS-THURSDAY, sy-vline,
  WA_PIQCA_RFC_SCHEDULE_ELEMENTS-FRIDAY, sy-vline,
  WA_PIQCA_RFC_SCHEDULE_ELEMENTS-SATURDAY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PIQCA_RFC_SCHEDULE_ELEMENTS 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_PIQCA_RFC_SCHEDULE_ELEMENTS 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_PIQCA_RFC_SCHEDULE_ELEMENTS INTO WA_PIQCA_RFC_SCHEDULE_ELEMENTS.


*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_PIQCA_RFC_SCHEDULE_ELEMENTS_STR, 
PLVAR TYPE STRING,
OTYPE TYPE STRING,
OBJID TYPE STRING,
BEGUZ TYPE STRING,
ENDUZ TYPE STRING,
MONDAY TYPE STRING,
TUESDAY TYPE STRING,
WEDNESDAY TYPE STRING,
THURSDAY TYPE STRING,
FRIDAY TYPE STRING,
SATURDAY TYPE STRING,
SUNDAY TYPE STRING,
SAWEEKS TYPE STRING,
EAWEEKS TYPE STRING,
SCHEDELEBEG TYPE STRING,
SCHEDELEEND TYPE STRING,
XDATES TYPE STRING,
RECFRQ TYPE STRING,
RECINT TYPE STRING,
X_WEEKS TYPE STRING,
X_MONTHS TYPE STRING,
OIMONTH TYPE STRING,
ROOM_OBJID TYPE STRING,
ROOM_RETID TYPE STRING,
INSTR_OTYPE TYPE STRING,
INSTR_OBJID TYPE STRING,
INSTR_RETID TYPE STRING,
INSTR_PROZT TYPE STRING,
ROOM_SHORT TYPE STRING,
ROOM_STEXT TYPE STRING,
ROOM_RETSH TYPE STRING,
ROOM_RETTX TYPE STRING,
INSTR_OTEXT TYPE STRING,
INSTR_SHORT TYPE STRING,
INSTR_STEXT TYPE STRING,
INSTR_RETSH TYPE STRING,
INSTR_RETTX TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PIQCA_RFC_SCHEDULE_ELEMENTS_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_PIQCA_RFC_SCHEDULE_ELEMENTS_STR-PLVAR sy-vline 
WA_PIQCA_RFC_SCHEDULE_ELEMENTS_STR-OTYPE sy-vline 
WA_PIQCA_RFC_SCHEDULE_ELEMENTS_STR-OBJID sy-vline 
WA_PIQCA_RFC_SCHEDULE_ELEMENTS_STR-BEGUZ sy-vline 
WA_PIQCA_RFC_SCHEDULE_ELEMENTS_STR-ENDUZ sy-vline 
WA_PIQCA_RFC_SCHEDULE_ELEMENTS_STR-MONDAY sy-vline 
WA_PIQCA_RFC_SCHEDULE_ELEMENTS_STR-TUESDAY sy-vline 
WA_PIQCA_RFC_SCHEDULE_ELEMENTS_STR-WEDNESDAY sy-vline 
WA_PIQCA_RFC_SCHEDULE_ELEMENTS_STR-THURSDAY sy-vline 
WA_PIQCA_RFC_SCHEDULE_ELEMENTS_STR-FRIDAY sy-vline 
WA_PIQCA_RFC_SCHEDULE_ELEMENTS_STR-SATURDAY sy-vline 
WA_PIQCA_RFC_SCHEDULE_ELEMENTS_STR-SUNDAY sy-vline 
WA_PIQCA_RFC_SCHEDULE_ELEMENTS_STR-SAWEEKS sy-vline 
WA_PIQCA_RFC_SCHEDULE_ELEMENTS_STR-EAWEEKS sy-vline 
WA_PIQCA_RFC_SCHEDULE_ELEMENTS_STR-SCHEDELEBEG sy-vline 
WA_PIQCA_RFC_SCHEDULE_ELEMENTS_STR-SCHEDELEEND sy-vline 
WA_PIQCA_RFC_SCHEDULE_ELEMENTS_STR-XDATES sy-vline 
WA_PIQCA_RFC_SCHEDULE_ELEMENTS_STR-RECFRQ sy-vline 
WA_PIQCA_RFC_SCHEDULE_ELEMENTS_STR-RECINT sy-vline 
WA_PIQCA_RFC_SCHEDULE_ELEMENTS_STR-X_WEEKS sy-vline 
WA_PIQCA_RFC_SCHEDULE_ELEMENTS_STR-X_MONTHS sy-vline 
WA_PIQCA_RFC_SCHEDULE_ELEMENTS_STR-OIMONTH sy-vline 
WA_PIQCA_RFC_SCHEDULE_ELEMENTS_STR-ROOM_OBJID sy-vline 
WA_PIQCA_RFC_SCHEDULE_ELEMENTS_STR-ROOM_RETID sy-vline 
WA_PIQCA_RFC_SCHEDULE_ELEMENTS_STR-INSTR_OTYPE sy-vline 
WA_PIQCA_RFC_SCHEDULE_ELEMENTS_STR-INSTR_OBJID sy-vline 
WA_PIQCA_RFC_SCHEDULE_ELEMENTS_STR-INSTR_RETID sy-vline 
WA_PIQCA_RFC_SCHEDULE_ELEMENTS_STR-INSTR_PROZT sy-vline 
WA_PIQCA_RFC_SCHEDULE_ELEMENTS_STR-ROOM_SHORT sy-vline 
WA_PIQCA_RFC_SCHEDULE_ELEMENTS_STR-ROOM_STEXT sy-vline 
WA_PIQCA_RFC_SCHEDULE_ELEMENTS_STR-ROOM_RETSH sy-vline 
WA_PIQCA_RFC_SCHEDULE_ELEMENTS_STR-ROOM_RETTX sy-vline 
WA_PIQCA_RFC_SCHEDULE_ELEMENTS_STR-INSTR_OTEXT sy-vline 
WA_PIQCA_RFC_SCHEDULE_ELEMENTS_STR-INSTR_SHORT sy-vline 
WA_PIQCA_RFC_SCHEDULE_ELEMENTS_STR-INSTR_STEXT sy-vline 
WA_PIQCA_RFC_SCHEDULE_ELEMENTS_STR-INSTR_RETSH sy-vline 
WA_PIQCA_RFC_SCHEDULE_ELEMENTS_STR-INSTR_RETTX sy-vline      INTO ld_text SEPARATED BY SPACE.

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