ABAP Select data from SAP table IBKK_PSTCLA into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IBKK_PSTCLA
*  INTO TABLE @DATA(IT_IBKK_PSTCLA2).
*--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_IBKK_PSTCLA INDEX 1 INTO DATA(WA_IBKK_PSTCLA2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IBKK_PSTCLA>-ITEM_NO = 1.
<IBKK_PSTCLA>-BANKSCLR = 1.
<IBKK_PSTCLA>-BANKLCLR = 1.
<IBKK_PSTCLA>-SWIFTCLR = 1.
<IBKK_PSTCLA>-ACEXTCLR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IBKK_PSTCLA-BKSCLR, sy-vline,
  WA_IBKK_PSTCLA-ACIBANCLR, sy-vline,
  WA_IBKK_PSTCLA-NAME_CLR, sy-vline,
  WA_IBKK_PSTCLA-REFNO_CR, sy-vline,
  WA_IBKK_PSTCLA-REFNO_PAYM, sy-vline,
  WA_IBKK_PSTCLA-REFNO_PN, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IBKK_PSTCLA 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_IBKK_PSTCLA 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_IBKK_PSTCLA INTO WA_IBKK_PSTCLA.


*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 ACEXT, internal->external for field ACEXTCLR
CALL FUNCTION 'CONVERSION_EXIT_ACEXT_OUTPUT'
  EXPORTING
    input =                      WA_IBKK_PSTCLA-ACEXTCLR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IBKK_PSTCLA-ACEXTCLR.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ALPHA, internal->external for field REFNO_PN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IBKK_PSTCLA-REFNO_PN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IBKK_PSTCLA-REFNO_PN.
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_IBKK_PSTCLA_STR, 
ITEM_NO TYPE STRING,
BANKSCLR TYPE STRING,
BANKLCLR TYPE STRING,
SWIFTCLR TYPE STRING,
ACEXTCLR TYPE STRING,
BKSCLR TYPE STRING,
ACIBANCLR TYPE STRING,
NAME_CLR TYPE STRING,
REFNO_CR TYPE STRING,
REFNO_PAYM TYPE STRING,
REFNO_PN TYPE STRING,
PRENOTE_REF_NO TYPE STRING,
DATE_CR TYPE STRING,
DATE_VALUE TYPE STRING,
DATE_POST TYPE STRING,
DATE_DUE TYPE STRING,
TCUR TYPE STRING,
NTCUR TYPE STRING,
ACUR TYPE STRING,
T_AMOUNT TYPE STRING,
NT_AMOUNT TYPE STRING,
A_AMOUNT TYPE STRING,
T_CHARGE TYPE STRING,
NT_CHARGE TYPE STRING,
A_CHARGE TYPE STRING,
EXCHNGRATE TYPE STRING,
MEDIUM TYPE STRING,
TRNSTYPE TYPE STRING,
COUNTRY TYPE STRING,
XCRED TYPE STRING,
XBANKFILE TYPE STRING,
PUBLIC_CONT_L1 TYPE STRING,
PUBLIC_CONT_L2 TYPE STRING,
PUBLIC_CONT_L3 TYPE STRING,
PUBLIC_CONT_L4 TYPE STRING,
PUBLIC_CONT_S1 TYPE STRING,
PUBLIC_CONT_S2 TYPE STRING,
TAX_YEAR TYPE STRING,
AMOUNT_ID TYPE STRING,
CONTRIB_ID TYPE STRING,
IRS_DCODE TYPE STRING,
IRS_SCODE TYPE STRING,
WH_AMOUNT_TOTAL TYPE STRING,
XCHK_CHQUE TYPE STRING,
XCHK_VALUE TYPE STRING,
XCHK_LIMIT TYPE STRING,
XCHK_ACLCK TYPE STRING,
XCHK_BPLCK TYPE STRING,
XCHK_MANDATE TYPE STRING,
XCHK_PRENOTE TYPE STRING,
XCHK_EXTD_MND TYPE STRING,
UCI TYPE STRING,
MANDATE_ID TYPE STRING,
REF_PO_BK TYPE STRING,
REF_PO_NO TYPE STRING,
REF_PO_PS TYPE STRING,
RECONC_SYSTEM TYPE STRING,
RECONC_APPL TYPE STRING,
RECONC_NO TYPE STRING,
EXCHNGRATE_L TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IBKK_PSTCLA_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_IBKK_PSTCLA_STR-ITEM_NO sy-vline 
WA_IBKK_PSTCLA_STR-BANKSCLR sy-vline 
WA_IBKK_PSTCLA_STR-BANKLCLR sy-vline 
WA_IBKK_PSTCLA_STR-SWIFTCLR sy-vline 
WA_IBKK_PSTCLA_STR-ACEXTCLR sy-vline 
WA_IBKK_PSTCLA_STR-BKSCLR sy-vline 
WA_IBKK_PSTCLA_STR-ACIBANCLR sy-vline 
WA_IBKK_PSTCLA_STR-NAME_CLR sy-vline 
WA_IBKK_PSTCLA_STR-REFNO_CR sy-vline 
WA_IBKK_PSTCLA_STR-REFNO_PAYM sy-vline 
WA_IBKK_PSTCLA_STR-REFNO_PN sy-vline 
WA_IBKK_PSTCLA_STR-PRENOTE_REF_NO sy-vline 
WA_IBKK_PSTCLA_STR-DATE_CR sy-vline 
WA_IBKK_PSTCLA_STR-DATE_VALUE sy-vline 
WA_IBKK_PSTCLA_STR-DATE_POST sy-vline 
WA_IBKK_PSTCLA_STR-DATE_DUE sy-vline 
WA_IBKK_PSTCLA_STR-TCUR sy-vline 
WA_IBKK_PSTCLA_STR-NTCUR sy-vline 
WA_IBKK_PSTCLA_STR-ACUR sy-vline 
WA_IBKK_PSTCLA_STR-T_AMOUNT sy-vline 
WA_IBKK_PSTCLA_STR-NT_AMOUNT sy-vline 
WA_IBKK_PSTCLA_STR-A_AMOUNT sy-vline 
WA_IBKK_PSTCLA_STR-T_CHARGE sy-vline 
WA_IBKK_PSTCLA_STR-NT_CHARGE sy-vline 
WA_IBKK_PSTCLA_STR-A_CHARGE sy-vline 
WA_IBKK_PSTCLA_STR-EXCHNGRATE sy-vline 
WA_IBKK_PSTCLA_STR-MEDIUM sy-vline 
WA_IBKK_PSTCLA_STR-TRNSTYPE sy-vline 
WA_IBKK_PSTCLA_STR-COUNTRY sy-vline 
WA_IBKK_PSTCLA_STR-XCRED sy-vline 
WA_IBKK_PSTCLA_STR-XBANKFILE sy-vline 
WA_IBKK_PSTCLA_STR-PUBLIC_CONT_L1 sy-vline 
WA_IBKK_PSTCLA_STR-PUBLIC_CONT_L2 sy-vline 
WA_IBKK_PSTCLA_STR-PUBLIC_CONT_L3 sy-vline 
WA_IBKK_PSTCLA_STR-PUBLIC_CONT_L4 sy-vline 
WA_IBKK_PSTCLA_STR-PUBLIC_CONT_S1 sy-vline 
WA_IBKK_PSTCLA_STR-PUBLIC_CONT_S2 sy-vline 
WA_IBKK_PSTCLA_STR-TAX_YEAR sy-vline 
WA_IBKK_PSTCLA_STR-AMOUNT_ID sy-vline 
WA_IBKK_PSTCLA_STR-CONTRIB_ID sy-vline 
WA_IBKK_PSTCLA_STR-IRS_DCODE sy-vline 
WA_IBKK_PSTCLA_STR-IRS_SCODE sy-vline 
WA_IBKK_PSTCLA_STR-WH_AMOUNT_TOTAL sy-vline 
WA_IBKK_PSTCLA_STR-XCHK_CHQUE sy-vline 
WA_IBKK_PSTCLA_STR-XCHK_VALUE sy-vline 
WA_IBKK_PSTCLA_STR-XCHK_LIMIT sy-vline 
WA_IBKK_PSTCLA_STR-XCHK_ACLCK sy-vline 
WA_IBKK_PSTCLA_STR-XCHK_BPLCK sy-vline 
WA_IBKK_PSTCLA_STR-XCHK_MANDATE sy-vline 
WA_IBKK_PSTCLA_STR-XCHK_PRENOTE sy-vline 
WA_IBKK_PSTCLA_STR-XCHK_EXTD_MND sy-vline 
WA_IBKK_PSTCLA_STR-UCI sy-vline 
WA_IBKK_PSTCLA_STR-MANDATE_ID sy-vline 
WA_IBKK_PSTCLA_STR-REF_PO_BK sy-vline 
WA_IBKK_PSTCLA_STR-REF_PO_NO sy-vline 
WA_IBKK_PSTCLA_STR-REF_PO_PS sy-vline 
WA_IBKK_PSTCLA_STR-RECONC_SYSTEM sy-vline 
WA_IBKK_PSTCLA_STR-RECONC_APPL sy-vline 
WA_IBKK_PSTCLA_STR-RECONC_NO sy-vline 
WA_IBKK_PSTCLA_STR-EXCHNGRATE_L sy-vline      INTO ld_text SEPARATED BY SPACE.

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