ABAP Select data from SAP table BKK_STR_HOLDS_C into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM BKK_STR_HOLDS_C
*  INTO TABLE @DATA(IT_BKK_STR_HOLDS_C2).
*--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_BKK_STR_HOLDS_C INDEX 1 INTO DATA(WA_BKK_STR_HOLDS_C2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<BKK_STR_HOLDS_C>-WA_HOLDS_C = 1.
<BKK_STR_HOLDS_C>-MANDT = 1.
<BKK_STR_HOLDS_C>-BKKRS = 1.
<BKK_STR_HOLDS_C>-ACNUM_INT = 1.
<BKK_STR_HOLDS_C>-RECORD_ID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_BKK_STR_HOLDS_C-GROUP_ID, sy-vline,
  WA_BKK_STR_HOLDS_C-HOLD_TYPE, sy-vline,
  WA_BKK_STR_HOLDS_C-HOLD_CUR, sy-vline,
  WA_BKK_STR_HOLDS_C-HOLD_AMOUNT, sy-vline,
  WA_BKK_STR_HOLDS_C-VALIDFROM, sy-vline,
  WA_BKK_STR_HOLDS_C-VALIDTO, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_BKK_STR_HOLDS_C 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_BKK_STR_HOLDS_C 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_BKK_STR_HOLDS_C INTO WA_BKK_STR_HOLDS_C.


*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 ACNUM_INT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_BKK_STR_HOLDS_C-ACNUM_INT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BKK_STR_HOLDS_C-ACNUM_INT.
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_BKK_STR_HOLDS_C_STR, 
WA_HOLDS_C TYPE STRING,
MANDT TYPE STRING,
BKKRS TYPE STRING,
ACNUM_INT TYPE STRING,
RECORD_ID TYPE STRING,
GROUP_ID TYPE STRING,
HOLD_TYPE TYPE STRING,
HOLD_CUR TYPE STRING,
HOLD_AMOUNT TYPE STRING,
VALIDFROM TYPE STRING,
VALIDTO TYPE STRING,
REF_NUM TYPE STRING,
REF_TYPE TYPE STRING,
HOLD_ACTIVE TYPE STRING,
ISSUE_DATE TYPE STRING,
REMOVE_DATE TYPE STRING,
CHANGE_USER TYPE STRING,
CHANGE_DATE TYPE STRING,
DELETE_FLG TYPE STRING,
STATUS TYPE STRING,
DOCNO TYPE STRING,
POSNO TYPE STRING,
CRUSR TYPE STRING,
CRDAT TYPE STRING,
CRTIM TYPE STRING,
CHUSR TYPE STRING,
CHDAT TYPE STRING,
CHTIM TYPE STRING,
RLUSR TYPE STRING,
RLDAT TYPE STRING,
RLTIM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_BKK_STR_HOLDS_C_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_BKK_STR_HOLDS_C_STR-WA_HOLDS_C sy-vline 
WA_BKK_STR_HOLDS_C_STR-MANDT sy-vline 
WA_BKK_STR_HOLDS_C_STR-BKKRS sy-vline 
WA_BKK_STR_HOLDS_C_STR-ACNUM_INT sy-vline 
WA_BKK_STR_HOLDS_C_STR-RECORD_ID sy-vline 
WA_BKK_STR_HOLDS_C_STR-GROUP_ID sy-vline 
WA_BKK_STR_HOLDS_C_STR-HOLD_TYPE sy-vline 
WA_BKK_STR_HOLDS_C_STR-HOLD_CUR sy-vline 
WA_BKK_STR_HOLDS_C_STR-HOLD_AMOUNT sy-vline 
WA_BKK_STR_HOLDS_C_STR-VALIDFROM sy-vline 
WA_BKK_STR_HOLDS_C_STR-VALIDTO sy-vline 
WA_BKK_STR_HOLDS_C_STR-REF_NUM sy-vline 
WA_BKK_STR_HOLDS_C_STR-REF_TYPE sy-vline 
WA_BKK_STR_HOLDS_C_STR-HOLD_ACTIVE sy-vline 
WA_BKK_STR_HOLDS_C_STR-ISSUE_DATE sy-vline 
WA_BKK_STR_HOLDS_C_STR-REMOVE_DATE sy-vline 
WA_BKK_STR_HOLDS_C_STR-CHANGE_USER sy-vline 
WA_BKK_STR_HOLDS_C_STR-CHANGE_DATE sy-vline 
WA_BKK_STR_HOLDS_C_STR-DELETE_FLG sy-vline 
WA_BKK_STR_HOLDS_C_STR-STATUS sy-vline 
WA_BKK_STR_HOLDS_C_STR-DOCNO sy-vline 
WA_BKK_STR_HOLDS_C_STR-POSNO sy-vline 
WA_BKK_STR_HOLDS_C_STR-CRUSR sy-vline 
WA_BKK_STR_HOLDS_C_STR-CRDAT sy-vline 
WA_BKK_STR_HOLDS_C_STR-CRTIM sy-vline 
WA_BKK_STR_HOLDS_C_STR-CHUSR sy-vline 
WA_BKK_STR_HOLDS_C_STR-CHDAT sy-vline 
WA_BKK_STR_HOLDS_C_STR-CHTIM sy-vline 
WA_BKK_STR_HOLDS_C_STR-RLUSR sy-vline 
WA_BKK_STR_HOLDS_C_STR-RLDAT sy-vline 
WA_BKK_STR_HOLDS_C_STR-RLTIM sy-vline      INTO ld_text SEPARATED BY SPACE.

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