ABAP Select data from SAP table J_3RF_TGXML_SERV_LINE into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP J_3RF_TGXML_SERV_LINE 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 J_3RF_TGXML_SERV_LINE. 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 J_3RF_TGXML_SERV_LINE 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_J_3RF_TGXML_SERV_LINE TYPE STANDARD TABLE OF J_3RF_TGXML_SERV_LINE,
      WA_J_3RF_TGXML_SERV_LINE TYPE J_3RF_TGXML_SERV_LINE,
      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: <J_3RF_TGXML_SERV_LINE> TYPE J_3RF_TGXML_SERV_LINE.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_J_3RF_TGXML_SERV_LINE.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM J_3RF_TGXML_SERV_LINE
  INTO TABLE IT_J_3RF_TGXML_SERV_LINE.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM J_3RF_TGXML_SERV_LINE
*  INTO TABLE @DATA(IT_J_3RF_TGXML_SERV_LINE2).
*--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_J_3RF_TGXML_SERV_LINE INDEX 1 INTO DATA(WA_J_3RF_TGXML_SERV_LINE2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_J_3RF_TGXML_SERV_LINE ASSIGNING <J_3RF_TGXML_SERV_LINE>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<J_3RF_TGXML_SERV_LINE>-LINE_NUM = 1.
<J_3RF_TGXML_SERV_LINE>-NAME = 1.
<J_3RF_TGXML_SERV_LINE>-UNIT = 1.
<J_3RF_TGXML_SERV_LINE>-OKEI = 1.
<J_3RF_TGXML_SERV_LINE>-PRICE = 1.

ENDLOOP.

LOOP AT IT_J_3RF_TGXML_SERV_LINE INTO WA_J_3RF_TGXML_SERV_LINE.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_J_3RF_TGXML_SERV_LINE-QUANT, sy-vline,
  WA_J_3RF_TGXML_SERV_LINE-VATBASE, sy-vline,
  WA_J_3RF_TGXML_SERV_LINE-VAT, sy-vline,
  WA_J_3RF_TGXML_SERV_LINE-AMNT, sy-vline,
  WA_J_3RF_TGXML_SERV_LINE-INFO, sy-vline,
  WA_J_3RF_TGXML_SERV_LINE-DESCR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_J_3RF_TGXML_SERV_LINE 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_J_3RF_TGXML_SERV_LINE 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_J_3RF_TGXML_SERV_LINE INTO WA_J_3RF_TGXML_SERV_LINE.


*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 AE172, internal->external for field PRICE
CALL FUNCTION 'CONVERSION_EXIT_AE172_OUTPUT'
  EXPORTING
    input =                      WA_J_3RF_TGXML_SERV_LINE-PRICE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_3RF_TGXML_SERV_LINE-PRICE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AE172, internal->external for field VATBASE
CALL FUNCTION 'CONVERSION_EXIT_AE172_OUTPUT'
  EXPORTING
    input =                      WA_J_3RF_TGXML_SERV_LINE-VATBASE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_3RF_TGXML_SERV_LINE-VATBASE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AE172, internal->external for field VAT
CALL FUNCTION 'CONVERSION_EXIT_AE172_OUTPUT'
  EXPORTING
    input =                      WA_J_3RF_TGXML_SERV_LINE-VAT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_3RF_TGXML_SERV_LINE-VAT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AE172, internal->external for field AMNT
CALL FUNCTION 'CONVERSION_EXIT_AE172_OUTPUT'
  EXPORTING
    input =                      WA_J_3RF_TGXML_SERV_LINE-AMNT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_3RF_TGXML_SERV_LINE-AMNT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field EXT_EBELP
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_J_3RF_TGXML_SERV_LINE-EXT_EBELP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_3RF_TGXML_SERV_LINE-EXT_EBELP.
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_J_3RF_TGXML_SERV_LINE_STR, 
LINE_NUM TYPE STRING,
NAME TYPE STRING,
UNIT TYPE STRING,
OKEI TYPE STRING,
PRICE TYPE STRING,
QUANT TYPE STRING,
VATBASE TYPE STRING,
VAT TYPE STRING,
AMNT TYPE STRING,
INFO TYPE STRING,
DESCR TYPE STRING,
EXT_MATNR TYPE STRING,
EXT_EBELN TYPE STRING,
EXT_EBELP TYPE STRING,
EXT_BEDAT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_J_3RF_TGXML_SERV_LINE_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_J_3RF_TGXML_SERV_LINE_STR-LINE_NUM sy-vline 
WA_J_3RF_TGXML_SERV_LINE_STR-NAME sy-vline 
WA_J_3RF_TGXML_SERV_LINE_STR-UNIT sy-vline 
WA_J_3RF_TGXML_SERV_LINE_STR-OKEI sy-vline 
WA_J_3RF_TGXML_SERV_LINE_STR-PRICE sy-vline 
WA_J_3RF_TGXML_SERV_LINE_STR-QUANT sy-vline 
WA_J_3RF_TGXML_SERV_LINE_STR-VATBASE sy-vline 
WA_J_3RF_TGXML_SERV_LINE_STR-VAT sy-vline 
WA_J_3RF_TGXML_SERV_LINE_STR-AMNT sy-vline 
WA_J_3RF_TGXML_SERV_LINE_STR-INFO sy-vline 
WA_J_3RF_TGXML_SERV_LINE_STR-DESCR sy-vline 
WA_J_3RF_TGXML_SERV_LINE_STR-EXT_MATNR sy-vline 
WA_J_3RF_TGXML_SERV_LINE_STR-EXT_EBELN sy-vline 
WA_J_3RF_TGXML_SERV_LINE_STR-EXT_EBELP sy-vline 
WA_J_3RF_TGXML_SERV_LINE_STR-EXT_BEDAT sy-vline      INTO ld_text SEPARATED BY SPACE.

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