ABAP Select data from SAP table USEGD into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM USEGD
*  INTO TABLE @DATA(IT_USEGD2).
*--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_USEGD INDEX 1 INTO DATA(WA_USEGD2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<USEGD>-MANDT = 1.
<USEGD>-UBLNR = 1.
<USEGD>-UBJAHR = 1.
<USEGD>-UZEIL = 1.
<USEGD>-UPSTA = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_USEGD-BUKRS, sy-vline,
  WA_USEGD-BWKEY, sy-vline,
  WA_USEGD-WERKS, sy-vline,
  WA_USEGD-LGORT, sy-vline,
  WA_USEGD-MATNR, sy-vline,
  WA_USEGD-MATBF, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_USEGD 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_USEGD 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_USEGD INTO WA_USEGD.


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

*Conversion exit GJAHR, internal->external for field UBJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_USEGD-UBJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_USEGD-UBJAHR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_USEGD-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_USEGD-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATBF
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_USEGD-MATBF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_USEGD-MATBF.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit CUNIT, internal->external for field VRKME
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_USEGD-VRKME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_USEGD-VRKME.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit CUNIT, internal->external for field MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_USEGD-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_USEGD-MEINS.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit MATN1, internal->external for field MATN1
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_USEGD-MATN1
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_USEGD-MATN1.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATN2
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_USEGD-MATN2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_USEGD-MATN2.
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_USEGD_STR, 
MANDT TYPE STRING,
UBLNR TYPE STRING,
UBJAHR TYPE STRING,
UZEIL TYPE STRING,
UPSTA TYPE STRING,
BUKRS TYPE STRING,
BWKEY TYPE STRING,
WERKS TYPE STRING,
LGORT TYPE STRING,
MATNR TYPE STRING,
MATBF TYPE STRING,
PV_GRUND TYPE STRING,
BWTAR TYPE STRING,
VPDAT TYPE STRING,
ENDPR TYPE STRING,
VPNEU TYPE STRING,
VPALT TYPE STRING,
VRKPE TYPE STRING,
VRKME TYPE STRING,
VWAER TYPE STRING,
AKTNR TYPE STRING,
VKLAB_OLD TYPE STRING,
VKLABN_OLD TYPE STRING,
VKSAL_OLD TYPE STRING,
VKSALN_OLD TYPE STRING,
VKSAD TYPE STRING,
VKSADN TYPE STRING,
HWAER TYPE STRING,
ERFMG TYPE STRING,
MENGE TYPE STRING,
LBKUM TYPE STRING,
MEINS TYPE STRING,
UMVKZ TYPE STRING,
UMVKN TYPE STRING,
SPANN TYPE STRING,
EKPA TYPE STRING,
EKPN TYPE STRING,
WRBTR TYPE STRING,
SALK3_OLD TYPE STRING,
XIVNE TYPE STRING,
SHKZG TYPE STRING,
UAKT TYPE STRING,
SALES_VAL_SIGN TYPE STRING,
AFFECT_COST_VAL TYPE STRING,
VORGA_CREATE TYPE STRING,
MOD_CREATE TYPE STRING,
TIME_CREATE TYPE STRING,
VORGA_CHANGE TYPE STRING,
MOD_CHANGE TYPE STRING,
TIME_CHANGE TYPE STRING,
VKUNR TYPE STRING,
MATN1 TYPE STRING,
MATN2 TYPE STRING,
WNAME TYPE STRING,
PV_GRTXT TYPE STRING,
BUDAT TYPE STRING,
VKORG TYPE STRING,
VTWEG TYPE STRING,END OF T_EKKO_STR.
DATA: WA_USEGD_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_USEGD_STR-MANDT sy-vline 
WA_USEGD_STR-UBLNR sy-vline 
WA_USEGD_STR-UBJAHR sy-vline 
WA_USEGD_STR-UZEIL sy-vline 
WA_USEGD_STR-UPSTA sy-vline 
WA_USEGD_STR-BUKRS sy-vline 
WA_USEGD_STR-BWKEY sy-vline 
WA_USEGD_STR-WERKS sy-vline 
WA_USEGD_STR-LGORT sy-vline 
WA_USEGD_STR-MATNR sy-vline 
WA_USEGD_STR-MATBF sy-vline 
WA_USEGD_STR-PV_GRUND sy-vline 
WA_USEGD_STR-BWTAR sy-vline 
WA_USEGD_STR-VPDAT sy-vline 
WA_USEGD_STR-ENDPR sy-vline 
WA_USEGD_STR-VPNEU sy-vline 
WA_USEGD_STR-VPALT sy-vline 
WA_USEGD_STR-VRKPE sy-vline 
WA_USEGD_STR-VRKME sy-vline 
WA_USEGD_STR-VWAER sy-vline 
WA_USEGD_STR-AKTNR sy-vline 
WA_USEGD_STR-VKLAB_OLD sy-vline 
WA_USEGD_STR-VKLABN_OLD sy-vline 
WA_USEGD_STR-VKSAL_OLD sy-vline 
WA_USEGD_STR-VKSALN_OLD sy-vline 
WA_USEGD_STR-VKSAD sy-vline 
WA_USEGD_STR-VKSADN sy-vline 
WA_USEGD_STR-HWAER sy-vline 
WA_USEGD_STR-ERFMG sy-vline 
WA_USEGD_STR-MENGE sy-vline 
WA_USEGD_STR-LBKUM sy-vline 
WA_USEGD_STR-MEINS sy-vline 
WA_USEGD_STR-UMVKZ sy-vline 
WA_USEGD_STR-UMVKN sy-vline 
WA_USEGD_STR-SPANN sy-vline 
WA_USEGD_STR-EKPA sy-vline 
WA_USEGD_STR-EKPN sy-vline 
WA_USEGD_STR-WRBTR sy-vline 
WA_USEGD_STR-SALK3_OLD sy-vline 
WA_USEGD_STR-XIVNE sy-vline 
WA_USEGD_STR-SHKZG sy-vline 
WA_USEGD_STR-UAKT sy-vline 
WA_USEGD_STR-SALES_VAL_SIGN sy-vline 
WA_USEGD_STR-AFFECT_COST_VAL sy-vline 
WA_USEGD_STR-VORGA_CREATE sy-vline 
WA_USEGD_STR-MOD_CREATE sy-vline 
WA_USEGD_STR-TIME_CREATE sy-vline 
WA_USEGD_STR-VORGA_CHANGE sy-vline 
WA_USEGD_STR-MOD_CHANGE sy-vline 
WA_USEGD_STR-TIME_CHANGE sy-vline 
WA_USEGD_STR-VKUNR sy-vline 
WA_USEGD_STR-MATN1 sy-vline 
WA_USEGD_STR-MATN2 sy-vline 
WA_USEGD_STR-WNAME sy-vline 
WA_USEGD_STR-PV_GRTXT sy-vline 
WA_USEGD_STR-BUDAT sy-vline 
WA_USEGD_STR-VKORG sy-vline 
WA_USEGD_STR-VTWEG sy-vline      INTO ld_text SEPARATED BY SPACE.

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