ABAP Select data from SAP table PTDB_BKAN into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PTDB_BKAN
*  INTO TABLE @DATA(IT_PTDB_BKAN2).
*--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_PTDB_BKAN INDEX 1 INTO DATA(WA_PTDB_BKAN2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PTDB_BKAN>-ZVKAN = 1.
<PTDB_BKAN>-SKPNR = 1.
<PTDB_BKAN>-MSCHL = 1.
<PTDB_BKAN>-BEGDA = 1.
<PTDB_BKAN>-ENDDA = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PTDB_BKAN-ANGRP, sy-vline,
  WA_PTDB_BKAN-NACHN, sy-vline,
  WA_PTDB_BKAN-VORNA, sy-vline,
  WA_PTDB_BKAN-GBDAT, sy-vline,
  WA_PTDB_BKAN-GBORT, sy-vline,
  WA_PTDB_BKAN-STRAS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PTDB_BKAN 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_PTDB_BKAN 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_PTDB_BKAN INTO WA_PTDB_BKAN.


*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_PTDB_BKAN_STR, 
ZVKAN TYPE STRING,
SKPNR TYPE STRING,
MSCHL TYPE STRING,
BEGDA TYPE STRING,
ENDDA TYPE STRING,
ANGRP TYPE STRING,
NACHN TYPE STRING,
VORNA TYPE STRING,
GBDAT TYPE STRING,
GBORT TYPE STRING,
STRAS TYPE STRING,
ORT01 TYPE STRING,
LAND1 TYPE STRING,
EMAIL TYPE STRING,
GESCH TYPE STRING,
WOSTD TYPE STRING,
NATIO TYPE STRING,
SPRSL TYPE STRING,
BANKL TYPE STRING,
BANKN TYPE STRING,
EMFTX TYPE STRING,
BANKS TYPE STRING,
HEFTA TYPE STRING,
NUS03 TYPE STRING,
PSTLZ TYPE STRING,
BANKA TYPE STRING,
BANKI TYPE STRING,
NUS04 TYPE STRING,
NUS05 TYPE STRING,
TSCHL TYPE STRING,
IBAN TYPE STRING,
BIC TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PTDB_BKAN_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_PTDB_BKAN_STR-ZVKAN sy-vline 
WA_PTDB_BKAN_STR-SKPNR sy-vline 
WA_PTDB_BKAN_STR-MSCHL sy-vline 
WA_PTDB_BKAN_STR-BEGDA sy-vline 
WA_PTDB_BKAN_STR-ENDDA sy-vline 
WA_PTDB_BKAN_STR-ANGRP sy-vline 
WA_PTDB_BKAN_STR-NACHN sy-vline 
WA_PTDB_BKAN_STR-VORNA sy-vline 
WA_PTDB_BKAN_STR-GBDAT sy-vline 
WA_PTDB_BKAN_STR-GBORT sy-vline 
WA_PTDB_BKAN_STR-STRAS sy-vline 
WA_PTDB_BKAN_STR-ORT01 sy-vline 
WA_PTDB_BKAN_STR-LAND1 sy-vline 
WA_PTDB_BKAN_STR-EMAIL sy-vline 
WA_PTDB_BKAN_STR-GESCH sy-vline 
WA_PTDB_BKAN_STR-WOSTD sy-vline 
WA_PTDB_BKAN_STR-NATIO sy-vline 
WA_PTDB_BKAN_STR-SPRSL sy-vline 
WA_PTDB_BKAN_STR-BANKL sy-vline 
WA_PTDB_BKAN_STR-BANKN sy-vline 
WA_PTDB_BKAN_STR-EMFTX sy-vline 
WA_PTDB_BKAN_STR-BANKS sy-vline 
WA_PTDB_BKAN_STR-HEFTA sy-vline 
WA_PTDB_BKAN_STR-NUS03 sy-vline 
WA_PTDB_BKAN_STR-PSTLZ sy-vline 
WA_PTDB_BKAN_STR-BANKA sy-vline 
WA_PTDB_BKAN_STR-BANKI sy-vline 
WA_PTDB_BKAN_STR-NUS04 sy-vline 
WA_PTDB_BKAN_STR-NUS05 sy-vline 
WA_PTDB_BKAN_STR-TSCHL sy-vline 
WA_PTDB_BKAN_STR-IBAN sy-vline 
WA_PTDB_BKAN_STR-BIC sy-vline      INTO ld_text SEPARATED BY SPACE.

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