ABAP Select data from SAP table /LIME/BAPI_GM_REF_DOC into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /LIME/BAPI_GM_REF_DOC
*  INTO TABLE @DATA(IT_/LIME/BAPI_GM_REF_DOC2).
*--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_/LIME/BAPI_GM_REF_DOC INDEX 1 INTO DATA(WA_/LIME/BAPI_GM_REF_DOC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
</LIME/BAPI_GM_REF_DOC>-PO_NUMBER = 1.
</LIME/BAPI_GM_REF_DOC>-PO_ITEM = 1.
</LIME/BAPI_GM_REF_DOC>-NO_MORE_GR = 1.
</LIME/BAPI_GM_REF_DOC>-ORDERID = 1.
</LIME/BAPI_GM_REF_DOC>-ORDER_ITNO = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/LIME/BAPI_GM_REF_DOC-RESERV_NO, sy-vline,
  WA_/LIME/BAPI_GM_REF_DOC-RES_ITEM, sy-vline,
  WA_/LIME/BAPI_GM_REF_DOC-RES_TYPE, sy-vline,
  WA_/LIME/BAPI_GM_REF_DOC-WITHDRAWN, sy-vline,
  WA_/LIME/BAPI_GM_REF_DOC-DELIV_NUMB, sy-vline,
  WA_/LIME/BAPI_GM_REF_DOC-DELIV_ITEM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/LIME/BAPI_GM_REF_DOC 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_/LIME/BAPI_GM_REF_DOC 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_/LIME/BAPI_GM_REF_DOC INTO WA_/LIME/BAPI_GM_REF_DOC.


*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 PO_NUMBER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/LIME/BAPI_GM_REF_DOC-PO_NUMBER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/LIME/BAPI_GM_REF_DOC-PO_NUMBER.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

*Conversion exit ALPHA, internal->external for field DELIV_NUMB_TO_SEARCH
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/LIME/BAPI_GM_REF_DOC-DELIV_NUMB_TO_SEARCH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/LIME/BAPI_GM_REF_DOC-DELIV_NUMB_TO_SEARCH.
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_/LIME/BAPI_GM_REF_DOC_STR, 
PO_NUMBER TYPE STRING,
PO_ITEM TYPE STRING,
NO_MORE_GR TYPE STRING,
ORDERID TYPE STRING,
ORDER_ITNO TYPE STRING,
RESERV_NO TYPE STRING,
RES_ITEM TYPE STRING,
RES_TYPE TYPE STRING,
WITHDRAWN TYPE STRING,
DELIV_NUMB TYPE STRING,
DELIV_ITEM TYPE STRING,
REF_DOC_YR TYPE STRING,
REF_DOC TYPE STRING,
REF_DOC_IT TYPE STRING,
DELIV_NUMB_TO_SEARCH TYPE STRING,
DELIV_ITEM_TO_SEARCH TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/LIME/BAPI_GM_REF_DOC_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_/LIME/BAPI_GM_REF_DOC_STR-PO_NUMBER sy-vline 
WA_/LIME/BAPI_GM_REF_DOC_STR-PO_ITEM sy-vline 
WA_/LIME/BAPI_GM_REF_DOC_STR-NO_MORE_GR sy-vline 
WA_/LIME/BAPI_GM_REF_DOC_STR-ORDERID sy-vline 
WA_/LIME/BAPI_GM_REF_DOC_STR-ORDER_ITNO sy-vline 
WA_/LIME/BAPI_GM_REF_DOC_STR-RESERV_NO sy-vline 
WA_/LIME/BAPI_GM_REF_DOC_STR-RES_ITEM sy-vline 
WA_/LIME/BAPI_GM_REF_DOC_STR-RES_TYPE sy-vline 
WA_/LIME/BAPI_GM_REF_DOC_STR-WITHDRAWN sy-vline 
WA_/LIME/BAPI_GM_REF_DOC_STR-DELIV_NUMB sy-vline 
WA_/LIME/BAPI_GM_REF_DOC_STR-DELIV_ITEM sy-vline 
WA_/LIME/BAPI_GM_REF_DOC_STR-REF_DOC_YR sy-vline 
WA_/LIME/BAPI_GM_REF_DOC_STR-REF_DOC sy-vline 
WA_/LIME/BAPI_GM_REF_DOC_STR-REF_DOC_IT sy-vline 
WA_/LIME/BAPI_GM_REF_DOC_STR-DELIV_NUMB_TO_SEARCH sy-vline 
WA_/LIME/BAPI_GM_REF_DOC_STR-DELIV_ITEM_TO_SEARCH sy-vline      INTO ld_text SEPARATED BY SPACE.

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