ABAP Select data from SAP table BNK_BTC_HEADER_UI into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM BNK_BTC_HEADER_UI
*  INTO TABLE @DATA(IT_BNK_BTC_HEADER_UI2).
*--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_BNK_BTC_HEADER_UI INDEX 1 INTO DATA(WA_BNK_BTC_HEADER_UI2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<BNK_BTC_HEADER_UI>-BATCH_NO = 1.
<BNK_BTC_HEADER_UI>-ITEM_CNT = 1.
<BNK_BTC_HEADER_UI>-RULE_ID = 1.
<BNK_BTC_HEADER_UI>-RULE_TXT = 1.
<BNK_BTC_HEADER_UI>-STATUS_ID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_BNK_BTC_HEADER_UI-STATUS_TXT, sy-vline,
  WA_BNK_BTC_HEADER_UI-BATCH_SUM, sy-vline,
  WA_BNK_BTC_HEADER_UI-BATCH_CURR, sy-vline,
  WA_BNK_BTC_HEADER_UI-PAYM_SUM, sy-vline,
  WA_BNK_BTC_HEADER_UI-PAYM_CURR, sy-vline,
  WA_BNK_BTC_HEADER_UI-HBKID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_BNK_BTC_HEADER_UI 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_BNK_BTC_HEADER_UI 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_BNK_BTC_HEADER_UI INTO WA_BNK_BTC_HEADER_UI.


*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 RULE_ID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_BNK_BTC_HEADER_UI-RULE_ID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BNK_BTC_HEADER_UI-RULE_ID.
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_BNK_BTC_HEADER_UI_STR, 
BATCH_NO TYPE STRING,
ITEM_CNT TYPE STRING,
RULE_ID TYPE STRING,
RULE_TXT TYPE STRING,
STATUS_ID TYPE STRING,
STATUS_TXT TYPE STRING,
BATCH_SUM TYPE STRING,
BATCH_CURR TYPE STRING,
PAYM_SUM TYPE STRING,
PAYM_CURR TYPE STRING,
HBKID TYPE STRING,
HKTID TYPE STRING,
CUR_PROCESSOR TYPE STRING,
LAUFD_F TYPE STRING,
LAUFI_F TYPE STRING,
CRUSR TYPE STRING,
CRTIME TYPE STRING,
CRDATE TYPE STRING,
CHUSR TYPE STRING,
CHTIME TYPE STRING,
CHDATE TYPE STRING,
MAX_PAY_AMT TYPE STRING,
FINAL TYPE STRING,
WORKITEM_ID TYPE STRING,
ZBUKR TYPE STRING,
TOT_BTCH_AMT TYPE STRING,
MAXPAYAMT_RULECU TYPE STRING,
RULE_CURR TYPE STRING,
GRP_FIELD1_VALUE TYPE STRING,
GRP_FIELD2_VALUE TYPE STRING,
URGENT TYPE STRING,
DTKVS TYPE STRING,
BATCH_SUM_SIGN TYPE STRING,
TOT_BTCH_AMT_SIGN TYPE STRING,
ADD_INFO TYPE STRING,
FINAL_TEXT TYPE STRING,
RENUM TYPE STRING,
DWNAM TYPE STRING,
ORIGIN TYPE STRING,
EXT_STAT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_BNK_BTC_HEADER_UI_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_BNK_BTC_HEADER_UI_STR-BATCH_NO sy-vline 
WA_BNK_BTC_HEADER_UI_STR-ITEM_CNT sy-vline 
WA_BNK_BTC_HEADER_UI_STR-RULE_ID sy-vline 
WA_BNK_BTC_HEADER_UI_STR-RULE_TXT sy-vline 
WA_BNK_BTC_HEADER_UI_STR-STATUS_ID sy-vline 
WA_BNK_BTC_HEADER_UI_STR-STATUS_TXT sy-vline 
WA_BNK_BTC_HEADER_UI_STR-BATCH_SUM sy-vline 
WA_BNK_BTC_HEADER_UI_STR-BATCH_CURR sy-vline 
WA_BNK_BTC_HEADER_UI_STR-PAYM_SUM sy-vline 
WA_BNK_BTC_HEADER_UI_STR-PAYM_CURR sy-vline 
WA_BNK_BTC_HEADER_UI_STR-HBKID sy-vline 
WA_BNK_BTC_HEADER_UI_STR-HKTID sy-vline 
WA_BNK_BTC_HEADER_UI_STR-CUR_PROCESSOR sy-vline 
WA_BNK_BTC_HEADER_UI_STR-LAUFD_F sy-vline 
WA_BNK_BTC_HEADER_UI_STR-LAUFI_F sy-vline 
WA_BNK_BTC_HEADER_UI_STR-CRUSR sy-vline 
WA_BNK_BTC_HEADER_UI_STR-CRTIME sy-vline 
WA_BNK_BTC_HEADER_UI_STR-CRDATE sy-vline 
WA_BNK_BTC_HEADER_UI_STR-CHUSR sy-vline 
WA_BNK_BTC_HEADER_UI_STR-CHTIME sy-vline 
WA_BNK_BTC_HEADER_UI_STR-CHDATE sy-vline 
WA_BNK_BTC_HEADER_UI_STR-MAX_PAY_AMT sy-vline 
WA_BNK_BTC_HEADER_UI_STR-FINAL sy-vline 
WA_BNK_BTC_HEADER_UI_STR-WORKITEM_ID sy-vline 
WA_BNK_BTC_HEADER_UI_STR-ZBUKR sy-vline 
WA_BNK_BTC_HEADER_UI_STR-TOT_BTCH_AMT sy-vline 
WA_BNK_BTC_HEADER_UI_STR-MAXPAYAMT_RULECU sy-vline 
WA_BNK_BTC_HEADER_UI_STR-RULE_CURR sy-vline 
WA_BNK_BTC_HEADER_UI_STR-GRP_FIELD1_VALUE sy-vline 
WA_BNK_BTC_HEADER_UI_STR-GRP_FIELD2_VALUE sy-vline 
WA_BNK_BTC_HEADER_UI_STR-URGENT sy-vline 
WA_BNK_BTC_HEADER_UI_STR-DTKVS sy-vline 
WA_BNK_BTC_HEADER_UI_STR-BATCH_SUM_SIGN sy-vline 
WA_BNK_BTC_HEADER_UI_STR-TOT_BTCH_AMT_SIGN sy-vline 
WA_BNK_BTC_HEADER_UI_STR-ADD_INFO sy-vline 
WA_BNK_BTC_HEADER_UI_STR-FINAL_TEXT sy-vline 
WA_BNK_BTC_HEADER_UI_STR-RENUM sy-vline 
WA_BNK_BTC_HEADER_UI_STR-DWNAM sy-vline 
WA_BNK_BTC_HEADER_UI_STR-ORIGIN sy-vline 
WA_BNK_BTC_HEADER_UI_STR-EXT_STAT sy-vline      INTO ld_text SEPARATED BY SPACE.

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