ABAP Select data from SAP table KLANBETRIN into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM KLANBETRIN
*  INTO TABLE @DATA(IT_KLANBETRIN2).
*--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_KLANBETRIN INDEX 1 INTO DATA(WA_KLANBETRIN2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<KLANBETRIN>-FORMID = 1.
<KLANBETRIN>-SBV = 1.
<KLANBETRIN>-BBAS = 1.
<KLANBETRIN>-BBASIS = 1.
<KLANBETRIN>-SBASIS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_KLANBETRIN-BBK1WHR, sy-vline,
  WA_KLANBETRIN-SBK1WHR, sy-vline,
  WA_KLANBETRIN-BBK2WHR, sy-vline,
  WA_KLANBETRIN-SBK2WHR, sy-vline,
  WA_KLANBETRIN-BBK3WHR, sy-vline,
  WA_KLANBETRIN-SBK3WHR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_KLANBETRIN 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_KLANBETRIN 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_KLANBETRIN INTO WA_KLANBETRIN.


*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_KLANBETRIN_STR, 
FORMID TYPE STRING,
SBV TYPE STRING,
BBAS TYPE STRING,
BBASIS TYPE STRING,
SBASIS TYPE STRING,
BBK1WHR TYPE STRING,
SBK1WHR TYPE STRING,
BBK2WHR TYPE STRING,
SBK2WHR TYPE STRING,
BBK3WHR TYPE STRING,
SBK3WHR TYPE STRING,
BBK4WHR TYPE STRING,
SBK4WHR TYPE STRING,
ADD_ON_FAK TYPE STRING,
AWKT TYPE STRING,
RECRATE TYPE STRING,
EDF TYPE STRING,
LEQ TYPE STRING,
CEQ TYPE STRING,
VARFAC TYPE STRING,
GEWFAK TYPE STRING,END OF T_EKKO_STR.
DATA: WA_KLANBETRIN_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_KLANBETRIN_STR-FORMID sy-vline 
WA_KLANBETRIN_STR-SBV sy-vline 
WA_KLANBETRIN_STR-BBAS sy-vline 
WA_KLANBETRIN_STR-BBASIS sy-vline 
WA_KLANBETRIN_STR-SBASIS sy-vline 
WA_KLANBETRIN_STR-BBK1WHR sy-vline 
WA_KLANBETRIN_STR-SBK1WHR sy-vline 
WA_KLANBETRIN_STR-BBK2WHR sy-vline 
WA_KLANBETRIN_STR-SBK2WHR sy-vline 
WA_KLANBETRIN_STR-BBK3WHR sy-vline 
WA_KLANBETRIN_STR-SBK3WHR sy-vline 
WA_KLANBETRIN_STR-BBK4WHR sy-vline 
WA_KLANBETRIN_STR-SBK4WHR sy-vline 
WA_KLANBETRIN_STR-ADD_ON_FAK sy-vline 
WA_KLANBETRIN_STR-AWKT sy-vline 
WA_KLANBETRIN_STR-RECRATE sy-vline 
WA_KLANBETRIN_STR-EDF sy-vline 
WA_KLANBETRIN_STR-LEQ sy-vline 
WA_KLANBETRIN_STR-CEQ sy-vline 
WA_KLANBETRIN_STR-VARFAC sy-vline 
WA_KLANBETRIN_STR-GEWFAK sy-vline      INTO ld_text SEPARATED BY SPACE.

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