ABAP Select data from SAP table /SAPAPO/CALIO into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /SAPAPO/CALIO 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 /SAPAPO/CALIO. 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 /SAPAPO/CALIO 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_/SAPAPO/CALIO TYPE STANDARD TABLE OF /SAPAPO/CALIO,
      WA_/SAPAPO/CALIO TYPE /SAPAPO/CALIO,
      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: </SAPAPO/CALIO> TYPE /SAPAPO/CALIO.

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

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /SAPAPO/CALIO
  INTO TABLE IT_/SAPAPO/CALIO.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SAPAPO/CALIO
*  INTO TABLE @DATA(IT_/SAPAPO/CALIO2).
*--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_/SAPAPO/CALIO INDEX 1 INTO DATA(WA_/SAPAPO/CALIO2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/SAPAPO/CALIO ASSIGNING </SAPAPO/CALIO>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SAPAPO/CALIO>-CALENDARID = 1.
</SAPAPO/CALIO>-DATUB = 1.
</SAPAPO/CALIO>-DATUV = 1.
</SAPAPO/CALIO>-ERROR_TEXT = 1.
</SAPAPO/CALIO>-FCODE = 1.

ENDLOOP.

LOOP AT IT_/SAPAPO/CALIO INTO WA_/SAPAPO/CALIO.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SAPAPO/CALIO-MANDT, sy-vline,
  WA_/SAPAPO/CALIO-MRPPS, sy-vline,
  WA_/SAPAPO/CALIO-MRPPS_SEL, sy-vline,
  WA_/SAPAPO/CALIO-MRPPS_TEXT, sy-vline,
  WA_/SAPAPO/CALIO-PPDAT, sy-vline,
  WA_/SAPAPO/CALIO-PPFIX, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SAPAPO/CALIO 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_/SAPAPO/CALIO 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_/SAPAPO/CALIO INTO WA_/SAPAPO/CALIO.


*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_/SAPAPO/CALIO_STR, 
CALENDARID TYPE STRING,
DATUB TYPE STRING,
DATUV TYPE STRING,
ERROR_TEXT TYPE STRING,
FCODE TYPE STRING,
MANDT TYPE STRING,
MRPPS TYPE STRING,
MRPPS_SEL TYPE STRING,
MRPPS_TEXT TYPE STRING,
PPDAT TYPE STRING,
PPFIX TYPE STRING,
SCOPEGENBW TYPE STRING,
SCOPEGENFW TYPE STRING,
SELKZ TYPE STRING,
SUFIX TYPE STRING,
TEXT40 TYPE STRING,
TSTRID TYPE STRING,
TZONE TYPE STRING,
WKDAY TYPE STRING,
WKDAY_TEXT TYPE STRING,
WKNUM TYPE STRING,
PPVONDA TYPE STRING,
PPVONTI TYPE STRING,
PPBISDA TYPE STRING,
PPBISTI TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SAPAPO/CALIO_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_/SAPAPO/CALIO_STR-CALENDARID sy-vline 
WA_/SAPAPO/CALIO_STR-DATUB sy-vline 
WA_/SAPAPO/CALIO_STR-DATUV sy-vline 
WA_/SAPAPO/CALIO_STR-ERROR_TEXT sy-vline 
WA_/SAPAPO/CALIO_STR-FCODE sy-vline 
WA_/SAPAPO/CALIO_STR-MANDT sy-vline 
WA_/SAPAPO/CALIO_STR-MRPPS sy-vline 
WA_/SAPAPO/CALIO_STR-MRPPS_SEL sy-vline 
WA_/SAPAPO/CALIO_STR-MRPPS_TEXT sy-vline 
WA_/SAPAPO/CALIO_STR-PPDAT sy-vline 
WA_/SAPAPO/CALIO_STR-PPFIX sy-vline 
WA_/SAPAPO/CALIO_STR-SCOPEGENBW sy-vline 
WA_/SAPAPO/CALIO_STR-SCOPEGENFW sy-vline 
WA_/SAPAPO/CALIO_STR-SELKZ sy-vline 
WA_/SAPAPO/CALIO_STR-SUFIX sy-vline 
WA_/SAPAPO/CALIO_STR-TEXT40 sy-vline 
WA_/SAPAPO/CALIO_STR-TSTRID sy-vline 
WA_/SAPAPO/CALIO_STR-TZONE sy-vline 
WA_/SAPAPO/CALIO_STR-WKDAY sy-vline 
WA_/SAPAPO/CALIO_STR-WKDAY_TEXT sy-vline 
WA_/SAPAPO/CALIO_STR-WKNUM sy-vline 
WA_/SAPAPO/CALIO_STR-PPVONDA sy-vline 
WA_/SAPAPO/CALIO_STR-PPVONTI sy-vline 
WA_/SAPAPO/CALIO_STR-PPBISDA sy-vline 
WA_/SAPAPO/CALIO_STR-PPBISTI sy-vline      INTO ld_text SEPARATED BY SPACE.

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