ABAP Select data from SAP table BKKITGL into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM BKKITGL
*  INTO TABLE @DATA(IT_BKKITGL2).
*--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_BKKITGL INDEX 1 INTO DATA(WA_BKKITGL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<BKKITGL>-MANDT = 1.
<BKKITGL>-BKKRS = 1.
<BKKITGL>-DOCNO = 1.
<BKKITGL>-POSNO = 1.
<BKKITGL>-GLPOS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_BKKITGL-FIKEY, sy-vline,
  WA_BKKITGL-FIKEYC, sy-vline,
  WA_BKKITGL-DATE_POST, sy-vline,
  WA_BKKITGL-DATE_VALUE, sy-vline,
  WA_BKKITGL-GLACT, sy-vline,
  WA_BKKITGL-PAYM_ACTION, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_BKKITGL 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_BKKITGL 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_BKKITGL INTO WA_BKKITGL.


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

*Conversion exit ALPHA, internal->external for field C_GLACCT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_BKKITGL-C_GLACCT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BKKITGL-C_GLACCT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VBUND
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_BKKITGL-VBUND
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BKKITGL-VBUND.
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_BKKITGL_STR, 
MANDT TYPE STRING,
BKKRS TYPE STRING,
DOCNO TYPE STRING,
POSNO TYPE STRING,
GLPOS TYPE STRING,
FIKEY TYPE STRING,
FIKEYC TYPE STRING,
DATE_POST TYPE STRING,
DATE_VALUE TYPE STRING,
GLACT TYPE STRING,
PAYM_ACTION TYPE STRING,
GLACCT TYPE STRING,
C_GLACCT TYPE STRING,
MWSKZ TYPE STRING,
TAXIT TYPE STRING,
GLGRP TYPE STRING,
GLKEY TYPE STRING,
EXTRAKEY TYPE STRING,
XSINGLE TYPE STRING,
XPOSTOLD TYPE STRING,
X_DIV_GL_ASSIGN TYPE STRING,
GSBER TYPE STRING,
VBUND TYPE STRING,
ZUONR TYPE STRING,
C_GSBER TYPE STRING,
SUMSZ TYPE STRING,
BSPPNR TYPE STRING,
FIKEY_BSP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_BKKITGL_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_BKKITGL_STR-MANDT sy-vline 
WA_BKKITGL_STR-BKKRS sy-vline 
WA_BKKITGL_STR-DOCNO sy-vline 
WA_BKKITGL_STR-POSNO sy-vline 
WA_BKKITGL_STR-GLPOS sy-vline 
WA_BKKITGL_STR-FIKEY sy-vline 
WA_BKKITGL_STR-FIKEYC sy-vline 
WA_BKKITGL_STR-DATE_POST sy-vline 
WA_BKKITGL_STR-DATE_VALUE sy-vline 
WA_BKKITGL_STR-GLACT sy-vline 
WA_BKKITGL_STR-PAYM_ACTION sy-vline 
WA_BKKITGL_STR-GLACCT sy-vline 
WA_BKKITGL_STR-C_GLACCT sy-vline 
WA_BKKITGL_STR-MWSKZ sy-vline 
WA_BKKITGL_STR-TAXIT sy-vline 
WA_BKKITGL_STR-GLGRP sy-vline 
WA_BKKITGL_STR-GLKEY sy-vline 
WA_BKKITGL_STR-EXTRAKEY sy-vline 
WA_BKKITGL_STR-XSINGLE sy-vline 
WA_BKKITGL_STR-XPOSTOLD sy-vline 
WA_BKKITGL_STR-X_DIV_GL_ASSIGN sy-vline 
WA_BKKITGL_STR-GSBER sy-vline 
WA_BKKITGL_STR-VBUND sy-vline 
WA_BKKITGL_STR-ZUONR sy-vline 
WA_BKKITGL_STR-C_GSBER sy-vline 
WA_BKKITGL_STR-SUMSZ sy-vline 
WA_BKKITGL_STR-BSPPNR sy-vline 
WA_BKKITGL_STR-FIKEY_BSP sy-vline      INTO ld_text SEPARATED BY SPACE.

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