ABAP Select data from SAP table CALPD into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CALPD
*  INTO TABLE @DATA(IT_CALPD2).
*--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_CALPD INDEX 1 INTO DATA(WA_CALPD2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CALPD>-VUMZA = 1.
<CALPD>-VUMNE = 1.
<CALPD>-BUKRS = 1.
<CALPD>-CKNUM = 1.
<CALPD>-AUFSA = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CALPD-BPRME, sy-vline,
  WA_CALPD-BPUMN, sy-vline,
  WA_CALPD-BPUMZ, sy-vline,
  WA_CALPD-EKWRS, sy-vline,
  WA_CALPD-EKPEI, sy-vline,
  WA_CALPD-EKMEI, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CALPD 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_CALPD 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_CALPD INTO WA_CALPD.


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

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

*Conversion exit KOTAB, internal->external for field EKOTABN
CALL FUNCTION 'CONVERSION_EXIT_KOTAB_OUTPUT'
  EXPORTING
    input =                      WA_CALPD-EKOTABN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CALPD-EKOTABN.
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_CALPD_STR, 
VUMZA TYPE STRING,
VUMNE TYPE STRING,
BUKRS TYPE STRING,
CKNUM TYPE STRING,
AUFSA TYPE STRING,
BPRME TYPE STRING,
BPUMN TYPE STRING,
BPUMZ TYPE STRING,
EKWRS TYPE STRING,
EKPEI TYPE STRING,
EKMEI TYPE STRING,
EKUMZ TYPE STRING,
EKUMN TYPE STRING,
KZKAB TYPE STRING,
EGKAL TYPE STRING,
AENKZ TYPE STRING,
BONKZ TYPE STRING,
LISKZ TYPE STRING,
UPDKZ TYPE STRING,
MSGTY TYPE STRING,
KACTV TYPE STRING,
VACTV TYPE STRING,
EACTV TYPE STRING,
EXVKP TYPE STRING,
WERTA TYPE STRING,
BDIFF TYPE STRING,
LBKUM TYPE STRING,
VKSAL TYPE STRING,
VKSAN TYPE STRING,
BWTAR TYPE STRING,
VLFKZ TYPE STRING,
EKOTABN TYPE STRING,
EKSCH TYPE STRING,
EVAKY TYPE STRING,
VVAKY TYPE STRING,
KWDEC TYPE STRING,
VWDEC TYPE STRING,
LIFOK TYPE STRING,
PRCOK TYPE STRING,
EKEOK TYPE STRING,
FIRKZ TYPE STRING,
DATAR TYPE STRING,
EKPNW TYPE STRING,
VKPNW TYPE STRING,
VKPBW TYPE STRING,
BWSCA TYPE STRING,
EKKEY TYPE STRING,
AUFSG_ALT TYPE STRING,
VKPNE_ALT TYPE STRING,
VKPBR_ALT TYPE STRING,
ENDPR_ALT TYPE STRING,
BPSTA_ALT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CALPD_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_CALPD_STR-VUMZA sy-vline 
WA_CALPD_STR-VUMNE sy-vline 
WA_CALPD_STR-BUKRS sy-vline 
WA_CALPD_STR-CKNUM sy-vline 
WA_CALPD_STR-AUFSA sy-vline 
WA_CALPD_STR-BPRME sy-vline 
WA_CALPD_STR-BPUMN sy-vline 
WA_CALPD_STR-BPUMZ sy-vline 
WA_CALPD_STR-EKWRS sy-vline 
WA_CALPD_STR-EKPEI sy-vline 
WA_CALPD_STR-EKMEI sy-vline 
WA_CALPD_STR-EKUMZ sy-vline 
WA_CALPD_STR-EKUMN sy-vline 
WA_CALPD_STR-KZKAB sy-vline 
WA_CALPD_STR-EGKAL sy-vline 
WA_CALPD_STR-AENKZ sy-vline 
WA_CALPD_STR-BONKZ sy-vline 
WA_CALPD_STR-LISKZ sy-vline 
WA_CALPD_STR-UPDKZ sy-vline 
WA_CALPD_STR-MSGTY sy-vline 
WA_CALPD_STR-KACTV sy-vline 
WA_CALPD_STR-VACTV sy-vline 
WA_CALPD_STR-EACTV sy-vline 
WA_CALPD_STR-EXVKP sy-vline 
WA_CALPD_STR-WERTA sy-vline 
WA_CALPD_STR-BDIFF sy-vline 
WA_CALPD_STR-LBKUM sy-vline 
WA_CALPD_STR-VKSAL sy-vline 
WA_CALPD_STR-VKSAN sy-vline 
WA_CALPD_STR-BWTAR sy-vline 
WA_CALPD_STR-VLFKZ sy-vline 
WA_CALPD_STR-EKOTABN sy-vline 
WA_CALPD_STR-EKSCH sy-vline 
WA_CALPD_STR-EVAKY sy-vline 
WA_CALPD_STR-VVAKY sy-vline 
WA_CALPD_STR-KWDEC sy-vline 
WA_CALPD_STR-VWDEC sy-vline 
WA_CALPD_STR-LIFOK sy-vline 
WA_CALPD_STR-PRCOK sy-vline 
WA_CALPD_STR-EKEOK sy-vline 
WA_CALPD_STR-FIRKZ sy-vline 
WA_CALPD_STR-DATAR sy-vline 
WA_CALPD_STR-EKPNW sy-vline 
WA_CALPD_STR-VKPNW sy-vline 
WA_CALPD_STR-VKPBW sy-vline 
WA_CALPD_STR-BWSCA sy-vline 
WA_CALPD_STR-EKKEY sy-vline 
WA_CALPD_STR-AUFSG_ALT sy-vline 
WA_CALPD_STR-VKPNE_ALT sy-vline 
WA_CALPD_STR-VKPBR_ALT sy-vline 
WA_CALPD_STR-ENDPR_ALT sy-vline 
WA_CALPD_STR-BPSTA_ALT sy-vline      INTO ld_text SEPARATED BY SPACE.

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