ABAP Select data from SAP table J_1GWTRCH into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

Below is a number of ABAP code snippets to demonstrate how to select data from SAP J_1GWTRCH 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_1GWTRCH. 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_1GWTRCH 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_1GWTRCH TYPE STANDARD TABLE OF J_1GWTRCH,
      WA_J_1GWTRCH TYPE J_1GWTRCH,
      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_1GWTRCH> TYPE J_1GWTRCH.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_J_1GWTRCH.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM J_1GWTRCH
  INTO TABLE IT_J_1GWTRCH.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM J_1GWTRCH
*  INTO TABLE @DATA(IT_J_1GWTRCH2).
*--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_1GWTRCH INDEX 1 INTO DATA(WA_J_1GWTRCH2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_J_1GWTRCH ASSIGNING <J_1GWTRCH>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<J_1GWTRCH>-TAXCAT = 1.
<J_1GWTRCH>-DATE_FROM = 1.
<J_1GWTRCH>-DATE_TO = 1.
<J_1GWTRCH>-PRDATE = 1.
<J_1GWTRCH>-BUKRS = 1.

ENDLOOP.

LOOP AT IT_J_1GWTRCH INTO WA_J_1GWTRCH.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_J_1GWTRCH-NAME1B, sy-vline,
  WA_J_1GWTRCH-NAME2B, sy-vline,
  WA_J_1GWTRCH-NAMETXTB, sy-vline,
  WA_J_1GWTRCH-VNAMB, sy-vline,
  WA_J_1GWTRCH-PROFB, sy-vline,
  WA_J_1GWTRCH-TAXCODEB, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_J_1GWTRCH 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_1GWTRCH 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_1GWTRCH INTO WA_J_1GWTRCH.


*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 SXIDN, internal->external for field EMAILB
CALL FUNCTION 'CONVERSION_EXIT_SXIDN_OUTPUT'
  EXPORTING
    input =                      WA_J_1GWTRCH-EMAILB
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_1GWTRCH-EMAILB.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LIFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_J_1GWTRCH-LIFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_1GWTRCH-LIFNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit SXIDN, internal->external for field EMAILK
CALL FUNCTION 'CONVERSION_EXIT_SXIDN_OUTPUT'
  EXPORTING
    input =                      WA_J_1GWTRCH-EMAILK
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_1GWTRCH-EMAILK.
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_1GWTRCH_STR, 
TAXCAT TYPE STRING,
DATE_FROM TYPE STRING,
DATE_TO TYPE STRING,
PRDATE TYPE STRING,
BUKRS TYPE STRING,
NAME1B TYPE STRING,
NAME2B TYPE STRING,
NAMETXTB TYPE STRING,
VNAMB TYPE STRING,
PROFB TYPE STRING,
TAXCODEB TYPE STRING,
TAXAUTHB TYPE STRING,
TAXFNUMB TYPE STRING,
TAXRGNRB TYPE STRING,
PRNUMB TYPE STRING,
RCNUMB TYPE STRING,
CITYB TYPE STRING,
STRASB TYPE STRING,
STRNAB TYPE STRING,
STRNRB TYPE STRING,
PSTLZB TYPE STRING,
TELF1B TYPE STRING,
TELFXB TYPE STRING,
EMAILB TYPE STRING,
LIFNR TYPE STRING,
NAME1K TYPE STRING,
NAME2K TYPE STRING,
NAMETXTK TYPE STRING,
VNAMK TYPE STRING,
PROFK TYPE STRING,
TAXCODEK TYPE STRING,
TAXAUTHK TYPE STRING,
TAXFNUMK TYPE STRING,
TAXRGNRK TYPE STRING,
PRNUMK TYPE STRING,
RCNUMK TYPE STRING,
CITYK TYPE STRING,
STRASK TYPE STRING,
STRNAK TYPE STRING,
STRNRK TYPE STRING,
PSTLZK TYPE STRING,
TELF1K TYPE STRING,
TELFXK TYPE STRING,
EMAILK TYPE STRING,END OF T_EKKO_STR.
DATA: WA_J_1GWTRCH_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_1GWTRCH_STR-TAXCAT sy-vline 
WA_J_1GWTRCH_STR-DATE_FROM sy-vline 
WA_J_1GWTRCH_STR-DATE_TO sy-vline 
WA_J_1GWTRCH_STR-PRDATE sy-vline 
WA_J_1GWTRCH_STR-BUKRS sy-vline 
WA_J_1GWTRCH_STR-NAME1B sy-vline 
WA_J_1GWTRCH_STR-NAME2B sy-vline 
WA_J_1GWTRCH_STR-NAMETXTB sy-vline 
WA_J_1GWTRCH_STR-VNAMB sy-vline 
WA_J_1GWTRCH_STR-PROFB sy-vline 
WA_J_1GWTRCH_STR-TAXCODEB sy-vline 
WA_J_1GWTRCH_STR-TAXAUTHB sy-vline 
WA_J_1GWTRCH_STR-TAXFNUMB sy-vline 
WA_J_1GWTRCH_STR-TAXRGNRB sy-vline 
WA_J_1GWTRCH_STR-PRNUMB sy-vline 
WA_J_1GWTRCH_STR-RCNUMB sy-vline 
WA_J_1GWTRCH_STR-CITYB sy-vline 
WA_J_1GWTRCH_STR-STRASB sy-vline 
WA_J_1GWTRCH_STR-STRNAB sy-vline 
WA_J_1GWTRCH_STR-STRNRB sy-vline 
WA_J_1GWTRCH_STR-PSTLZB sy-vline 
WA_J_1GWTRCH_STR-TELF1B sy-vline 
WA_J_1GWTRCH_STR-TELFXB sy-vline 
WA_J_1GWTRCH_STR-EMAILB sy-vline 
WA_J_1GWTRCH_STR-LIFNR sy-vline 
WA_J_1GWTRCH_STR-NAME1K sy-vline 
WA_J_1GWTRCH_STR-NAME2K sy-vline 
WA_J_1GWTRCH_STR-NAMETXTK sy-vline 
WA_J_1GWTRCH_STR-VNAMK sy-vline 
WA_J_1GWTRCH_STR-PROFK sy-vline 
WA_J_1GWTRCH_STR-TAXCODEK sy-vline 
WA_J_1GWTRCH_STR-TAXAUTHK sy-vline 
WA_J_1GWTRCH_STR-TAXFNUMK sy-vline 
WA_J_1GWTRCH_STR-TAXRGNRK sy-vline 
WA_J_1GWTRCH_STR-PRNUMK sy-vline 
WA_J_1GWTRCH_STR-RCNUMK sy-vline 
WA_J_1GWTRCH_STR-CITYK sy-vline 
WA_J_1GWTRCH_STR-STRASK sy-vline 
WA_J_1GWTRCH_STR-STRNAK sy-vline 
WA_J_1GWTRCH_STR-STRNRK sy-vline 
WA_J_1GWTRCH_STR-PSTLZK sy-vline 
WA_J_1GWTRCH_STR-TELF1K sy-vline 
WA_J_1GWTRCH_STR-TELFXK sy-vline 
WA_J_1GWTRCH_STR-EMAILK sy-vline      INTO ld_text SEPARATED BY SPACE.

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