ABAP Select data from SAP table TXW_BANK into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TXW_BANK
*  INTO TABLE @DATA(IT_TXW_BANK2).
*--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_TXW_BANK INDEX 1 INTO DATA(WA_TXW_BANK2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TXW_BANK>-MANDT = 1.
<TXW_BANK>-BUKRS = 1.
<TXW_BANK>-HBKID = 1.
<TXW_BANK>-HKTID = 1.
<TXW_BANK>-BANKS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TXW_BANK-BANKL, sy-vline,
  WA_TXW_BANK-BANKA, sy-vline,
  WA_TXW_BANK-STRAS, sy-vline,
  WA_TXW_BANK-ORT01, sy-vline,
  WA_TXW_BANK-PROVZ, sy-vline,
  WA_TXW_BANK-ADRNR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TXW_BANK 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_TXW_BANK 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_TXW_BANK INTO WA_TXW_BANK.


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

*Conversion exit ALPHA, internal->external for field HKONT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_TXW_BANK-HKONT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TXW_BANK-HKONT.
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_TXW_BANK_STR, 
MANDT TYPE STRING,
BUKRS TYPE STRING,
HBKID TYPE STRING,
HKTID TYPE STRING,
BANKS TYPE STRING,
BANKL TYPE STRING,
BANKA TYPE STRING,
STRAS TYPE STRING,
ORT01 TYPE STRING,
PROVZ TYPE STRING,
ADRNR TYPE STRING,
BKONT TYPE STRING,
BANKN TYPE STRING,
WAERS TYPE STRING,
HKONT TYPE STRING,
ERNAM TYPE STRING,
ERDAT TYPE STRING,
NAME1 TYPE STRING,
NAME2 TYPE STRING,
HOUSE_NUM TYPE STRING,
HOUSE_NUM1 TYPE STRING,
ORT02 TYPE STRING,
PSTLZ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TXW_BANK_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_TXW_BANK_STR-MANDT sy-vline 
WA_TXW_BANK_STR-BUKRS sy-vline 
WA_TXW_BANK_STR-HBKID sy-vline 
WA_TXW_BANK_STR-HKTID sy-vline 
WA_TXW_BANK_STR-BANKS sy-vline 
WA_TXW_BANK_STR-BANKL sy-vline 
WA_TXW_BANK_STR-BANKA sy-vline 
WA_TXW_BANK_STR-STRAS sy-vline 
WA_TXW_BANK_STR-ORT01 sy-vline 
WA_TXW_BANK_STR-PROVZ sy-vline 
WA_TXW_BANK_STR-ADRNR sy-vline 
WA_TXW_BANK_STR-BKONT sy-vline 
WA_TXW_BANK_STR-BANKN sy-vline 
WA_TXW_BANK_STR-WAERS sy-vline 
WA_TXW_BANK_STR-HKONT sy-vline 
WA_TXW_BANK_STR-ERNAM sy-vline 
WA_TXW_BANK_STR-ERDAT sy-vline 
WA_TXW_BANK_STR-NAME1 sy-vline 
WA_TXW_BANK_STR-NAME2 sy-vline 
WA_TXW_BANK_STR-HOUSE_NUM sy-vline 
WA_TXW_BANK_STR-HOUSE_NUM1 sy-vline 
WA_TXW_BANK_STR-ORT02 sy-vline 
WA_TXW_BANK_STR-PSTLZ sy-vline      INTO ld_text SEPARATED BY SPACE.

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