ABAP Select data from SAP table PSAPPCALC into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PSAPPCALC
*  INTO TABLE @DATA(IT_PSAPPCALC2).
*--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_PSAPPCALC INDEX 1 INTO DATA(WA_PSAPPCALC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PSAPPCALC>-MANDT = 1.
<PSAPPCALC>-LEDGER = 1.
<PSAPPCALC>-INTERVAL1YEAR = 1.
<PSAPPCALC>-INTERVAL2YEAR = 1.
<PSAPPCALC>-INTERVAL1FROMFISCALPERIOD = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PSAPPCALC-INTERVAL2FROMFISCALPERIOD, sy-vline,
  WA_PSAPPCALC-INTERVAL1TOFISCALPERIOD, sy-vline,
  WA_PSAPPCALC-INTERVAL2TOFISCALPERIOD, sy-vline,
  WA_PSAPPCALC-INTERVAL1TYPE, sy-vline,
  WA_PSAPPCALC-INTERVAL2TYPE, sy-vline,
ENDLOOP.
   
*Add any further fields from structure WA_PSAPPCALC 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_PSAPPCALC 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_PSAPPCALC INTO WA_PSAPPCALC.


*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 LEDGER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PSAPPCALC-LEDGER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PSAPPCALC-LEDGER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field INTERVAL1YEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_PSAPPCALC-INTERVAL1YEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PSAPPCALC-INTERVAL1YEAR.
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_PSAPPCALC_STR, 
MANDT TYPE STRING,
LEDGER TYPE STRING,
INTERVAL1YEAR TYPE STRING,
INTERVAL2YEAR TYPE STRING,
INTERVAL1FROMFISCALPERIOD TYPE STRING,
INTERVAL2FROMFISCALPERIOD TYPE STRING,
INTERVAL1TOFISCALPERIOD TYPE STRING,
INTERVAL2TOFISCALPERIOD TYPE STRING,
INTERVAL1TYPE TYPE STRING,
INTERVAL2TYPE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PSAPPCALC_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_PSAPPCALC_STR-MANDT sy-vline 
WA_PSAPPCALC_STR-LEDGER sy-vline 
WA_PSAPPCALC_STR-INTERVAL1YEAR sy-vline 
WA_PSAPPCALC_STR-INTERVAL2YEAR sy-vline 
WA_PSAPPCALC_STR-INTERVAL1FROMFISCALPERIOD sy-vline 
WA_PSAPPCALC_STR-INTERVAL2FROMFISCALPERIOD sy-vline 
WA_PSAPPCALC_STR-INTERVAL1TOFISCALPERIOD sy-vline 
WA_PSAPPCALC_STR-INTERVAL2TOFISCALPERIOD sy-vline 
WA_PSAPPCALC_STR-INTERVAL1TYPE sy-vline 
WA_PSAPPCALC_STR-INTERVAL2TYPE sy-vline      INTO ld_text SEPARATED BY SPACE.

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