ABAP Select data from SAP table /SAPDII/WTY_AR_LINEITEMS into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /SAPDII/WTY_AR_LINEITEMS 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 /SAPDII/WTY_AR_LINEITEMS. 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 /SAPDII/WTY_AR_LINEITEMS 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_/SAPDII/WTY_AR_LINEITEMS TYPE STANDARD TABLE OF /SAPDII/WTY_AR_LINEITEMS,
      WA_/SAPDII/WTY_AR_LINEITEMS TYPE /SAPDII/WTY_AR_LINEITEMS,
      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: </SAPDII/WTY_AR_LINEITEMS> TYPE /SAPDII/WTY_AR_LINEITEMS.

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

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /SAPDII/WTY_AR_LINEITEMS
  INTO TABLE IT_/SAPDII/WTY_AR_LINEITEMS.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SAPDII/WTY_AR_LINEITEMS
*  INTO TABLE @DATA(IT_/SAPDII/WTY_AR_LINEITEMS2).
*--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_/SAPDII/WTY_AR_LINEITEMS INDEX 1 INTO DATA(WA_/SAPDII/WTY_AR_LINEITEMS2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/SAPDII/WTY_AR_LINEITEMS ASSIGNING </SAPDII/WTY_AR_LINEITEMS>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SAPDII/WTY_AR_LINEITEMS>-COMP_CODE = 1.
</SAPDII/WTY_AR_LINEITEMS>-BUS_AREA = 1.
</SAPDII/WTY_AR_LINEITEMS>-CUSTOMER = 1.
</SAPDII/WTY_AR_LINEITEMS>-FISC_YEAR = 1.
</SAPDII/WTY_AR_LINEITEMS>-FIS_PERIOD = 1.

ENDLOOP.

LOOP AT IT_/SAPDII/WTY_AR_LINEITEMS INTO WA_/SAPDII/WTY_AR_LINEITEMS.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SAPDII/WTY_AR_LINEITEMS-CLEAR_DATE, sy-vline,
  WA_/SAPDII/WTY_AR_LINEITEMS-CLR_DOC_NO, sy-vline,
  WA_/SAPDII/WTY_AR_LINEITEMS-PSTNG_DATE, sy-vline,
  WA_/SAPDII/WTY_AR_LINEITEMS-POST_KEY, sy-vline,
  WA_/SAPDII/WTY_AR_LINEITEMS-REF_DOC_NO, sy-vline,
  WA_/SAPDII/WTY_AR_LINEITEMS-ALLOC_NMBR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SAPDII/WTY_AR_LINEITEMS 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_/SAPDII/WTY_AR_LINEITEMS 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_/SAPDII/WTY_AR_LINEITEMS INTO WA_/SAPDII/WTY_AR_LINEITEMS.


*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 CUSTOMER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/SAPDII/WTY_AR_LINEITEMS-CUSTOMER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPDII/WTY_AR_LINEITEMS-CUSTOMER.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

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

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

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

*Conversion exit ISOLA, internal->external for field LANGU
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_/SAPDII/WTY_AR_LINEITEMS-LANGU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPDII/WTY_AR_LINEITEMS-LANGU.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field REF_DOC
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/SAPDII/WTY_AR_LINEITEMS-REF_DOC
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPDII/WTY_AR_LINEITEMS-REF_DOC.
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_/SAPDII/WTY_AR_LINEITEMS_STR, 
COMP_CODE TYPE STRING,
BUS_AREA TYPE STRING,
CUSTOMER TYPE STRING,
FISC_YEAR TYPE STRING,
FIS_PERIOD TYPE STRING,
CLEAR_DATE TYPE STRING,
CLR_DOC_NO TYPE STRING,
PSTNG_DATE TYPE STRING,
POST_KEY TYPE STRING,
REF_DOC_NO TYPE STRING,
ALLOC_NMBR TYPE STRING,
DOC_NO TYPE STRING,
DOC_TYPE TYPE STRING,
ITEM_NUM TYPE STRING,
DB_CR_IND TYPE STRING,
LC_AMOUNT TYPE STRING,
LOC_CURRCY TYPE STRING,
AMT_DOCCUR TYPE STRING,
CURRENCY TYPE STRING,
AMOUNT TYPE STRING,
T_CURRENCY TYPE STRING,
NEG_POSTNG TYPE STRING,
REVERSAL_DOC TYPE STRING,
DOC_STATUS TYPE STRING,
NXT_DOCTYP TYPE STRING,
REASON_CDE TYPE STRING,
BRANCH TYPE STRING,
BLINE_DATE TYPE STRING,
PMNTTRMS TYPE STRING,
PMTMTHSUPL TYPE STRING,
INV_REF TYPE STRING,
INV_YEAR TYPE STRING,
INV_ITEM TYPE STRING,
REF_KEY_1 TYPE STRING,
REF_KEY_2 TYPE STRING,
BANK_ACCT TYPE STRING,
BANK_KEY TYPE STRING,
BANK_CTRY TYPE STRING,
POBK_CURAC TYPE STRING,
PAYEE_CODE TYPE STRING,
LANGU TYPE STRING,
OBJ_TYPE TYPE STRING,
REF_DOC TYPE STRING,
REF_ORG_UN TYPE STRING,
REF_DOC_NO_LONG TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SAPDII/WTY_AR_LINEITEMS_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_/SAPDII/WTY_AR_LINEITEMS_STR-COMP_CODE sy-vline 
WA_/SAPDII/WTY_AR_LINEITEMS_STR-BUS_AREA sy-vline 
WA_/SAPDII/WTY_AR_LINEITEMS_STR-CUSTOMER sy-vline 
WA_/SAPDII/WTY_AR_LINEITEMS_STR-FISC_YEAR sy-vline 
WA_/SAPDII/WTY_AR_LINEITEMS_STR-FIS_PERIOD sy-vline 
WA_/SAPDII/WTY_AR_LINEITEMS_STR-CLEAR_DATE sy-vline 
WA_/SAPDII/WTY_AR_LINEITEMS_STR-CLR_DOC_NO sy-vline 
WA_/SAPDII/WTY_AR_LINEITEMS_STR-PSTNG_DATE sy-vline 
WA_/SAPDII/WTY_AR_LINEITEMS_STR-POST_KEY sy-vline 
WA_/SAPDII/WTY_AR_LINEITEMS_STR-REF_DOC_NO sy-vline 
WA_/SAPDII/WTY_AR_LINEITEMS_STR-ALLOC_NMBR sy-vline 
WA_/SAPDII/WTY_AR_LINEITEMS_STR-DOC_NO sy-vline 
WA_/SAPDII/WTY_AR_LINEITEMS_STR-DOC_TYPE sy-vline 
WA_/SAPDII/WTY_AR_LINEITEMS_STR-ITEM_NUM sy-vline 
WA_/SAPDII/WTY_AR_LINEITEMS_STR-DB_CR_IND sy-vline 
WA_/SAPDII/WTY_AR_LINEITEMS_STR-LC_AMOUNT sy-vline 
WA_/SAPDII/WTY_AR_LINEITEMS_STR-LOC_CURRCY sy-vline 
WA_/SAPDII/WTY_AR_LINEITEMS_STR-AMT_DOCCUR sy-vline 
WA_/SAPDII/WTY_AR_LINEITEMS_STR-CURRENCY sy-vline 
WA_/SAPDII/WTY_AR_LINEITEMS_STR-AMOUNT sy-vline 
WA_/SAPDII/WTY_AR_LINEITEMS_STR-T_CURRENCY sy-vline 
WA_/SAPDII/WTY_AR_LINEITEMS_STR-NEG_POSTNG sy-vline 
WA_/SAPDII/WTY_AR_LINEITEMS_STR-REVERSAL_DOC sy-vline 
WA_/SAPDII/WTY_AR_LINEITEMS_STR-DOC_STATUS sy-vline 
WA_/SAPDII/WTY_AR_LINEITEMS_STR-NXT_DOCTYP sy-vline 
WA_/SAPDII/WTY_AR_LINEITEMS_STR-REASON_CDE sy-vline 
WA_/SAPDII/WTY_AR_LINEITEMS_STR-BRANCH sy-vline 
WA_/SAPDII/WTY_AR_LINEITEMS_STR-BLINE_DATE sy-vline 
WA_/SAPDII/WTY_AR_LINEITEMS_STR-PMNTTRMS sy-vline 
WA_/SAPDII/WTY_AR_LINEITEMS_STR-PMTMTHSUPL sy-vline 
WA_/SAPDII/WTY_AR_LINEITEMS_STR-INV_REF sy-vline 
WA_/SAPDII/WTY_AR_LINEITEMS_STR-INV_YEAR sy-vline 
WA_/SAPDII/WTY_AR_LINEITEMS_STR-INV_ITEM sy-vline 
WA_/SAPDII/WTY_AR_LINEITEMS_STR-REF_KEY_1 sy-vline 
WA_/SAPDII/WTY_AR_LINEITEMS_STR-REF_KEY_2 sy-vline 
WA_/SAPDII/WTY_AR_LINEITEMS_STR-BANK_ACCT sy-vline 
WA_/SAPDII/WTY_AR_LINEITEMS_STR-BANK_KEY sy-vline 
WA_/SAPDII/WTY_AR_LINEITEMS_STR-BANK_CTRY sy-vline 
WA_/SAPDII/WTY_AR_LINEITEMS_STR-POBK_CURAC sy-vline 
WA_/SAPDII/WTY_AR_LINEITEMS_STR-PAYEE_CODE sy-vline 
WA_/SAPDII/WTY_AR_LINEITEMS_STR-LANGU sy-vline 
WA_/SAPDII/WTY_AR_LINEITEMS_STR-OBJ_TYPE sy-vline 
WA_/SAPDII/WTY_AR_LINEITEMS_STR-REF_DOC sy-vline 
WA_/SAPDII/WTY_AR_LINEITEMS_STR-REF_ORG_UN sy-vline 
WA_/SAPDII/WTY_AR_LINEITEMS_STR-REF_DOC_NO_LONG sy-vline      INTO ld_text SEPARATED BY SPACE.

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