ABAP Select data from SAP table PCAKOPTN 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 PCAKOPTN 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 PCAKOPTN. 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 PCAKOPTN 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_PCAKOPTN TYPE STANDARD TABLE OF PCAKOPTN,
      WA_PCAKOPTN TYPE PCAKOPTN,
      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: <PCAKOPTN> TYPE PCAKOPTN.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PCAKOPTN
*  INTO TABLE @DATA(IT_PCAKOPTN2).
*--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_PCAKOPTN INDEX 1 INTO DATA(WA_PCAKOPTN2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PCAKOPTN>-MANDT = 1.
<PCAKOPTN>-TKONN = 1.
<PCAKOPTN>-TPOSN = 1.
<PCAKOPTN>-OPNLTY_ID = 1.
<PCAKOPTN>-VALUE_TYP = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PCAKOPTN-SEQ_NO, sy-vline,
  WA_PCAKOPTN-OPTN_BUY_SEL, sy-vline,
  WA_PCAKOPTN-OPNLTY_TYP, sy-vline,
  WA_PCAKOPTN-DECL_BY_DT, sy-vline,
  WA_PCAKOPTN-OPTN_TEXT, sy-vline,
  WA_PCAKOPTN-CROP_SEASON_ID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PCAKOPTN 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_PCAKOPTN 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_PCAKOPTN INTO WA_PCAKOPTN.


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

*Conversion exit ALPHA, internal->external for field SOURCE_LOC
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PCAKOPTN-SOURCE_LOC
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PCAKOPTN-SOURCE_LOC.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field UOM
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_PCAKOPTN-UOM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PCAKOPTN-UOM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field UOM_TIME_UNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_PCAKOPTN-UOM_TIME_UNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PCAKOPTN-UOM_TIME_UNIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field UOM_PD
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_PCAKOPTN-UOM_PD
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PCAKOPTN-UOM_PD.
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_PCAKOPTN_STR, 
MANDT TYPE STRING,
TKONN TYPE STRING,
TPOSN TYPE STRING,
OPNLTY_ID TYPE STRING,
VALUE_TYP TYPE STRING,
SEQ_NO TYPE STRING,
OPTN_BUY_SEL TYPE STRING,
OPNLTY_TYP TYPE STRING,
DECL_BY_DT TYPE STRING,
OPTN_TEXT TYPE STRING,
CROP_SEASON_ID TYPE STRING,
SOURCE_LOC TYPE STRING,
MODE_ID TYPE STRING,
MEANS_ID TYPE STRING,
OPTN_VAL TYPE STRING,
UOM TYPE STRING,
UOM_TIME_UNIT TYPE STRING,
TYPE TYPE STRING,
PREM_DISC TYPE STRING,
CURRENCY TYPE STRING,
PER_UOM TYPE STRING,
UOM_PD TYPE STRING,
DEFAULT_OPTN TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PCAKOPTN_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_PCAKOPTN_STR-MANDT sy-vline 
WA_PCAKOPTN_STR-TKONN sy-vline 
WA_PCAKOPTN_STR-TPOSN sy-vline 
WA_PCAKOPTN_STR-OPNLTY_ID sy-vline 
WA_PCAKOPTN_STR-VALUE_TYP sy-vline 
WA_PCAKOPTN_STR-SEQ_NO sy-vline 
WA_PCAKOPTN_STR-OPTN_BUY_SEL sy-vline 
WA_PCAKOPTN_STR-OPNLTY_TYP sy-vline 
WA_PCAKOPTN_STR-DECL_BY_DT sy-vline 
WA_PCAKOPTN_STR-OPTN_TEXT sy-vline 
WA_PCAKOPTN_STR-CROP_SEASON_ID sy-vline 
WA_PCAKOPTN_STR-SOURCE_LOC sy-vline 
WA_PCAKOPTN_STR-MODE_ID sy-vline 
WA_PCAKOPTN_STR-MEANS_ID sy-vline 
WA_PCAKOPTN_STR-OPTN_VAL sy-vline 
WA_PCAKOPTN_STR-UOM sy-vline 
WA_PCAKOPTN_STR-UOM_TIME_UNIT sy-vline 
WA_PCAKOPTN_STR-TYPE sy-vline 
WA_PCAKOPTN_STR-PREM_DISC sy-vline 
WA_PCAKOPTN_STR-CURRENCY sy-vline 
WA_PCAKOPTN_STR-PER_UOM sy-vline 
WA_PCAKOPTN_STR-UOM_PD sy-vline 
WA_PCAKOPTN_STR-DEFAULT_OPTN sy-vline      INTO ld_text SEPARATED BY SPACE.

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