ABAP Select data from SAP table CPES_TERM_PERIODDET_INTF into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CPES_TERM_PERIODDET_INTF
*  INTO TABLE @DATA(IT_CPES_TERM_PERIODDET_INTF2).
*--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_CPES_TERM_PERIODDET_INTF INDEX 1 INTO DATA(WA_CPES_TERM_PERIODDET_INTF2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CPES_TERM_PERIODDET_INTF>-KNUMV = 1.
<CPES_TERM_PERIODDET_INTF>-KPOSN = 1.
<CPES_TERM_PERIODDET_INTF>-COND_TYPE = 1.
<CPES_TERM_PERIODDET_INTF>-TERM_SEQNO = 1.
<CPES_TERM_PERIODDET_INTF>-TERMNO = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CPES_TERM_PERIODDET_INTF-CPET_PERIOD_TYPE, sy-vline,
  WA_CPES_TERM_PERIODDET_INTF-PERIODDETRULE, sy-vline,
  WA_CPES_TERM_PERIODDET_INTF-PERIODDETROUT, sy-vline,
  WA_CPES_TERM_PERIODDET_INTF-SOURCEROUT, sy-vline,
  WA_CPES_TERM_PERIODDET_INTF-REFDATEROUT, sy-vline,
  WA_CPES_TERM_PERIODDET_INTF-DATEOFFSETROUT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CPES_TERM_PERIODDET_INTF 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_CPES_TERM_PERIODDET_INTF 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_CPES_TERM_PERIODDET_INTF INTO WA_CPES_TERM_PERIODDET_INTF.


*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 PERIODDETRULE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CPES_TERM_PERIODDET_INTF-PERIODDETRULE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CPES_TERM_PERIODDET_INTF-PERIODDETRULE.
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_CPES_TERM_PERIODDET_INTF_STR, 
KNUMV TYPE STRING,
KPOSN TYPE STRING,
COND_TYPE TYPE STRING,
TERM_SEQNO TYPE STRING,
TERMNO TYPE STRING,
CPET_PERIOD_TYPE TYPE STRING,
PERIODDETRULE TYPE STRING,
PERIODDETROUT TYPE STRING,
SOURCEROUT TYPE STRING,
REFDATEROUT TYPE STRING,
DATEOFFSETROUT TYPE STRING,
OFFSETUNITS TYPE STRING,
TIMEUOMROUT TYPE STRING,
TIMEUNITSBEF TYPE STRING,
TIMEUNITSAFT TYPE STRING,
EXCL_BASEDATE TYPE STRING,
DATEFROM TYPE STRING,
TIMEFROM TYPE STRING,
DATETO TYPE STRING,
TIMETO TYPE STRING,
DATELISTROUT TYPE STRING,
PERDETCALID TYPE STRING,
MISSENTRYROUT TYPE STRING,
CLOSEDDAYSROUT TYPE STRING,
MAXWEIGHTING TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CPES_TERM_PERIODDET_INTF_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_CPES_TERM_PERIODDET_INTF_STR-KNUMV sy-vline 
WA_CPES_TERM_PERIODDET_INTF_STR-KPOSN sy-vline 
WA_CPES_TERM_PERIODDET_INTF_STR-COND_TYPE sy-vline 
WA_CPES_TERM_PERIODDET_INTF_STR-TERM_SEQNO sy-vline 
WA_CPES_TERM_PERIODDET_INTF_STR-TERMNO sy-vline 
WA_CPES_TERM_PERIODDET_INTF_STR-CPET_PERIOD_TYPE sy-vline 
WA_CPES_TERM_PERIODDET_INTF_STR-PERIODDETRULE sy-vline 
WA_CPES_TERM_PERIODDET_INTF_STR-PERIODDETROUT sy-vline 
WA_CPES_TERM_PERIODDET_INTF_STR-SOURCEROUT sy-vline 
WA_CPES_TERM_PERIODDET_INTF_STR-REFDATEROUT sy-vline 
WA_CPES_TERM_PERIODDET_INTF_STR-DATEOFFSETROUT sy-vline 
WA_CPES_TERM_PERIODDET_INTF_STR-OFFSETUNITS sy-vline 
WA_CPES_TERM_PERIODDET_INTF_STR-TIMEUOMROUT sy-vline 
WA_CPES_TERM_PERIODDET_INTF_STR-TIMEUNITSBEF sy-vline 
WA_CPES_TERM_PERIODDET_INTF_STR-TIMEUNITSAFT sy-vline 
WA_CPES_TERM_PERIODDET_INTF_STR-EXCL_BASEDATE sy-vline 
WA_CPES_TERM_PERIODDET_INTF_STR-DATEFROM sy-vline 
WA_CPES_TERM_PERIODDET_INTF_STR-TIMEFROM sy-vline 
WA_CPES_TERM_PERIODDET_INTF_STR-DATETO sy-vline 
WA_CPES_TERM_PERIODDET_INTF_STR-TIMETO sy-vline 
WA_CPES_TERM_PERIODDET_INTF_STR-DATELISTROUT sy-vline 
WA_CPES_TERM_PERIODDET_INTF_STR-PERDETCALID sy-vline 
WA_CPES_TERM_PERIODDET_INTF_STR-MISSENTRYROUT sy-vline 
WA_CPES_TERM_PERIODDET_INTF_STR-CLOSEDDAYSROUT sy-vline 
WA_CPES_TERM_PERIODDET_INTF_STR-MAXWEIGHTING sy-vline      INTO ld_text SEPARATED BY SPACE.

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