ABAP Select data from SAP table GLACCOUNT_COA into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM GLACCOUNT_COA
*  INTO TABLE @DATA(IT_GLACCOUNT_COA2).
*--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_GLACCOUNT_COA INDEX 1 INTO DATA(WA_GLACCOUNT_COA2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<GLACCOUNT_COA>-KEYY = 1.
<GLACCOUNT_COA>-KTOPL = 1.
<GLACCOUNT_COA>-SAKNR = 1.
<GLACCOUNT_COA>-DATA = 1.
<GLACCOUNT_COA>-GLACCOUNT_TYPE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_GLACCOUNT_COA-GLACCOUNT_SUBTYPE, sy-vline,
  WA_GLACCOUNT_COA-MAIN_SAKNR, sy-vline,
  WA_GLACCOUNT_COA-KTOKS, sy-vline,
  WA_GLACCOUNT_COA-XBILK, sy-vline,
  WA_GLACCOUNT_COA-GVTYP, sy-vline,
  WA_GLACCOUNT_COA-FUNC_AREA, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_GLACCOUNT_COA 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_GLACCOUNT_COA 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_GLACCOUNT_COA INTO WA_GLACCOUNT_COA.


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

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

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

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

*Conversion exit ALPHA, internal->external for field BILKT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_GLACCOUNT_COA-BILKT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_GLACCOUNT_COA-BILKT.
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_GLACCOUNT_COA_STR, 
KEYY TYPE STRING,
KTOPL TYPE STRING,
SAKNR TYPE STRING,
DATA TYPE STRING,
GLACCOUNT_TYPE TYPE STRING,
GLACCOUNT_SUBTYPE TYPE STRING,
MAIN_SAKNR TYPE STRING,
KTOKS TYPE STRING,
XBILK TYPE STRING,
GVTYP TYPE STRING,
FUNC_AREA TYPE STRING,
MUSTR TYPE STRING,
VBUND TYPE STRING,
BILKT TYPE STRING,
XLOEV TYPE STRING,
XSPEA TYPE STRING,
XSPEB TYPE STRING,
XSPEP TYPE STRING,
INFO TYPE STRING,
ERDAT TYPE STRING,
ERNAM TYPE STRING,
SAKAN TYPE STRING,
ACTION TYPE STRING,END OF T_EKKO_STR.
DATA: WA_GLACCOUNT_COA_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_GLACCOUNT_COA_STR-KEYY sy-vline 
WA_GLACCOUNT_COA_STR-KTOPL sy-vline 
WA_GLACCOUNT_COA_STR-SAKNR sy-vline 
WA_GLACCOUNT_COA_STR-DATA sy-vline 
WA_GLACCOUNT_COA_STR-GLACCOUNT_TYPE sy-vline 
WA_GLACCOUNT_COA_STR-GLACCOUNT_SUBTYPE sy-vline 
WA_GLACCOUNT_COA_STR-MAIN_SAKNR sy-vline 
WA_GLACCOUNT_COA_STR-KTOKS sy-vline 
WA_GLACCOUNT_COA_STR-XBILK sy-vline 
WA_GLACCOUNT_COA_STR-GVTYP sy-vline 
WA_GLACCOUNT_COA_STR-FUNC_AREA sy-vline 
WA_GLACCOUNT_COA_STR-MUSTR sy-vline 
WA_GLACCOUNT_COA_STR-VBUND sy-vline 
WA_GLACCOUNT_COA_STR-BILKT sy-vline 
WA_GLACCOUNT_COA_STR-XLOEV sy-vline 
WA_GLACCOUNT_COA_STR-XSPEA sy-vline 
WA_GLACCOUNT_COA_STR-XSPEB sy-vline 
WA_GLACCOUNT_COA_STR-XSPEP sy-vline 
WA_GLACCOUNT_COA_STR-INFO sy-vline 
WA_GLACCOUNT_COA_STR-ERDAT sy-vline 
WA_GLACCOUNT_COA_STR-ERNAM sy-vline 
WA_GLACCOUNT_COA_STR-SAKAN sy-vline 
WA_GLACCOUNT_COA_STR-ACTION sy-vline      INTO ld_text SEPARATED BY SPACE.

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