ABAP Select data from SAP table WB2_EXPENSES_WORKAREA into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP WB2_EXPENSES_WORKAREA 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 WB2_EXPENSES_WORKAREA. 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 WB2_EXPENSES_WORKAREA 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_WB2_EXPENSES_WORKAREA TYPE STANDARD TABLE OF WB2_EXPENSES_WORKAREA,
      WA_WB2_EXPENSES_WORKAREA TYPE WB2_EXPENSES_WORKAREA,
      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: <WB2_EXPENSES_WORKAREA> TYPE WB2_EXPENSES_WORKAREA.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_WB2_EXPENSES_WORKAREA.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM WB2_EXPENSES_WORKAREA
  INTO TABLE IT_WB2_EXPENSES_WORKAREA.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WB2_EXPENSES_WORKAREA
*  INTO TABLE @DATA(IT_WB2_EXPENSES_WORKAREA2).
*--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_WB2_EXPENSES_WORKAREA INDEX 1 INTO DATA(WA_WB2_EXPENSES_WORKAREA2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_WB2_EXPENSES_WORKAREA ASSIGNING <WB2_EXPENSES_WORKAREA>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WB2_EXPENSES_WORKAREA>-TEW_TYPE = 1.
<WB2_EXPENSES_WORKAREA>-EXP_CLASS = 1.
<WB2_EXPENSES_WORKAREA>-ACCOUNT_TYPE = 1.
<WB2_EXPENSES_WORKAREA>-POST_TYPE = 1.
<WB2_EXPENSES_WORKAREA>-WBELN = 1.

ENDLOOP.

LOOP AT IT_WB2_EXPENSES_WORKAREA INTO WA_WB2_EXPENSES_WORKAREA.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WB2_EXPENSES_WORKAREA-PARTNER, sy-vline,
  WA_WB2_EXPENSES_WORKAREA-LFART, sy-vline,
  WA_WB2_EXPENSES_WORKAREA-WFDAT, sy-vline,
  WA_WB2_EXPENSES_WORKAREA-KUNRE, sy-vline,
  WA_WB2_EXPENSES_WORKAREA-LIFRE, sy-vline,
  WA_WB2_EXPENSES_WORKAREA-BEZEI_LIFRE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WB2_EXPENSES_WORKAREA 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_WB2_EXPENSES_WORKAREA 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_WB2_EXPENSES_WORKAREA INTO WA_WB2_EXPENSES_WORKAREA.


*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 WBELN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_WB2_EXPENSES_WORKAREA-WBELN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WB2_EXPENSES_WORKAREA-WBELN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PARTNER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_WB2_EXPENSES_WORKAREA-PARTNER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WB2_EXPENSES_WORKAREA-PARTNER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KUNRE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_WB2_EXPENSES_WORKAREA-KUNRE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WB2_EXPENSES_WORKAREA-KUNRE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LIFRE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_WB2_EXPENSES_WORKAREA-LIFRE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WB2_EXPENSES_WORKAREA-LIFRE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_WB2_EXPENSES_WORKAREA-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WB2_EXPENSES_WORKAREA-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field WFKME
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_WB2_EXPENSES_WORKAREA-WFKME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WB2_EXPENSES_WORKAREA-WFKME.
WRITE:/ 'New Value:', ld_input.

*Conversion exit EXCRT, internal->external for field WKURS
CALL FUNCTION 'CONVERSION_EXIT_EXCRT_OUTPUT'
  EXPORTING
    input =                      WA_WB2_EXPENSES_WORKAREA-WKURS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WB2_EXPENSES_WORKAREA-WKURS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PARTNER_EXP
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_WB2_EXPENSES_WORKAREA-PARTNER_EXP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WB2_EXPENSES_WORKAREA-PARTNER_EXP.
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_WB2_EXPENSES_WORKAREA_STR, 
TEW_TYPE TYPE STRING,
EXP_CLASS TYPE STRING,
ACCOUNT_TYPE TYPE STRING,
POST_TYPE TYPE STRING,
WBELN TYPE STRING,
PARTNER TYPE STRING,
LFART TYPE STRING,
WFDAT TYPE STRING,
KUNRE TYPE STRING,
LIFRE TYPE STRING,
BEZEI_LIFRE TYPE STRING,
WAERL TYPE STRING,
MATNR TYPE STRING,
MENGE TYPE STRING,
WFKME TYPE STRING,
MWSKZ TYPE STRING,
NETWR TYPE STRING,
NETPR TYPE STRING,
WERKS TYPE STRING,
XBLNR TYPE STRING,
VALDT TYPE STRING,
WKURS TYPE STRING,
ZTERM TYPE STRING,
CHARG TYPE STRING,
XCHAR TYPE STRING,
BWTAR TYPE STRING,
BEZEI TYPE STRING,
RFBSK TYPE STRING,
EXP_CALC_TYPE TYPE STRING,
EXP_CLASS_GROUP TYPE STRING,
BEZ_EXP_CL_GROUP TYPE STRING,
BEZ_EXP_CLASS TYPE STRING,
BEZ_ACC_TYPE TYPE STRING,
BEZ_POSTTYPE TYPE STRING,
WB2_PERCENT TYPE STRING,
KSCHL TYPE STRING,
KAPPL TYPE STRING,
REF_VALUE TYPE STRING,
REF_VALUE_REF TYPE STRING,
WKURS_DAT TYPE STRING,
TEXT TYPE STRING,
BLDAT TYPE STRING,
KUFIX TYPE STRING,
PARTNER_EXP TYPE STRING,
BEZEI_PARTNER_EX TYPE STRING,
LOG_STATUS TYPE STRING,
TXJCD_AKT TYPE STRING,
DISTRIBUTION TYPE STRING,
TAX_COUNTRY TYPE STRING,
BUKRS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WB2_EXPENSES_WORKAREA_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_WB2_EXPENSES_WORKAREA_STR-TEW_TYPE sy-vline 
WA_WB2_EXPENSES_WORKAREA_STR-EXP_CLASS sy-vline 
WA_WB2_EXPENSES_WORKAREA_STR-ACCOUNT_TYPE sy-vline 
WA_WB2_EXPENSES_WORKAREA_STR-POST_TYPE sy-vline 
WA_WB2_EXPENSES_WORKAREA_STR-WBELN sy-vline 
WA_WB2_EXPENSES_WORKAREA_STR-PARTNER sy-vline 
WA_WB2_EXPENSES_WORKAREA_STR-LFART sy-vline 
WA_WB2_EXPENSES_WORKAREA_STR-WFDAT sy-vline 
WA_WB2_EXPENSES_WORKAREA_STR-KUNRE sy-vline 
WA_WB2_EXPENSES_WORKAREA_STR-LIFRE sy-vline 
WA_WB2_EXPENSES_WORKAREA_STR-BEZEI_LIFRE sy-vline 
WA_WB2_EXPENSES_WORKAREA_STR-WAERL sy-vline 
WA_WB2_EXPENSES_WORKAREA_STR-MATNR sy-vline 
WA_WB2_EXPENSES_WORKAREA_STR-MENGE sy-vline 
WA_WB2_EXPENSES_WORKAREA_STR-WFKME sy-vline 
WA_WB2_EXPENSES_WORKAREA_STR-MWSKZ sy-vline 
WA_WB2_EXPENSES_WORKAREA_STR-NETWR sy-vline 
WA_WB2_EXPENSES_WORKAREA_STR-NETPR sy-vline 
WA_WB2_EXPENSES_WORKAREA_STR-WERKS sy-vline 
WA_WB2_EXPENSES_WORKAREA_STR-XBLNR sy-vline 
WA_WB2_EXPENSES_WORKAREA_STR-VALDT sy-vline 
WA_WB2_EXPENSES_WORKAREA_STR-WKURS sy-vline 
WA_WB2_EXPENSES_WORKAREA_STR-ZTERM sy-vline 
WA_WB2_EXPENSES_WORKAREA_STR-CHARG sy-vline 
WA_WB2_EXPENSES_WORKAREA_STR-XCHAR sy-vline 
WA_WB2_EXPENSES_WORKAREA_STR-BWTAR sy-vline 
WA_WB2_EXPENSES_WORKAREA_STR-BEZEI sy-vline 
WA_WB2_EXPENSES_WORKAREA_STR-RFBSK sy-vline 
WA_WB2_EXPENSES_WORKAREA_STR-EXP_CALC_TYPE sy-vline 
WA_WB2_EXPENSES_WORKAREA_STR-EXP_CLASS_GROUP sy-vline 
WA_WB2_EXPENSES_WORKAREA_STR-BEZ_EXP_CL_GROUP sy-vline 
WA_WB2_EXPENSES_WORKAREA_STR-BEZ_EXP_CLASS sy-vline 
WA_WB2_EXPENSES_WORKAREA_STR-BEZ_ACC_TYPE sy-vline 
WA_WB2_EXPENSES_WORKAREA_STR-BEZ_POSTTYPE sy-vline 
WA_WB2_EXPENSES_WORKAREA_STR-WB2_PERCENT sy-vline 
WA_WB2_EXPENSES_WORKAREA_STR-KSCHL sy-vline 
WA_WB2_EXPENSES_WORKAREA_STR-KAPPL sy-vline 
WA_WB2_EXPENSES_WORKAREA_STR-REF_VALUE sy-vline 
WA_WB2_EXPENSES_WORKAREA_STR-REF_VALUE_REF sy-vline 
WA_WB2_EXPENSES_WORKAREA_STR-WKURS_DAT sy-vline 
WA_WB2_EXPENSES_WORKAREA_STR-TEXT sy-vline 
WA_WB2_EXPENSES_WORKAREA_STR-BLDAT sy-vline 
WA_WB2_EXPENSES_WORKAREA_STR-KUFIX sy-vline 
WA_WB2_EXPENSES_WORKAREA_STR-PARTNER_EXP sy-vline 
WA_WB2_EXPENSES_WORKAREA_STR-BEZEI_PARTNER_EX sy-vline 
WA_WB2_EXPENSES_WORKAREA_STR-LOG_STATUS sy-vline 
WA_WB2_EXPENSES_WORKAREA_STR-TXJCD_AKT sy-vline 
WA_WB2_EXPENSES_WORKAREA_STR-DISTRIBUTION sy-vline 
WA_WB2_EXPENSES_WORKAREA_STR-TAX_COUNTRY sy-vline 
WA_WB2_EXPENSES_WORKAREA_STR-BUKRS sy-vline      INTO ld_text SEPARATED BY SPACE.

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