ABAP Select data from SAP table TAGCO into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TAGCO
*  INTO TABLE @DATA(IT_TAGCO2).
*--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_TAGCO INDEX 1 INTO DATA(WA_TAGCO2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TAGCO>-MANDT = 1.
<TAGCO>-XML_LINK_WRITE = 1.
<TAGCO>-ACC_RACHECK = 1.
<TAGCO>-TEXT_HANDLING = 1.
<TAGCO>-CANC_RELCHECK = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TAGCO-ARCHIVE_DISPLAY, sy-vline,
  WA_TAGCO-EVENT_3E_3F, sy-vline,
  WA_TAGCO-SEPA_ACTIVE, sy-vline,
  WA_TAGCO-DOCFLOW_ENHANCED, sy-vline,
  WA_TAGCO-TREE_DOC_FLOW, sy-vline,
  WA_TAGCO-INCOTERMS_2010_ACTIVE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TAGCO 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_TAGCO 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_TAGCO INTO WA_TAGCO.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_TAGCO_STR, 
MANDT TYPE STRING,
XML_LINK_WRITE TYPE STRING,
ACC_RACHECK TYPE STRING,
TEXT_HANDLING TYPE STRING,
CANC_RELCHECK TYPE STRING,
ARCHIVE_DISPLAY TYPE STRING,
EVENT_3E_3F TYPE STRING,
SEPA_ACTIVE TYPE STRING,
DOCFLOW_ENHANCED TYPE STRING,
TREE_DOC_FLOW TYPE STRING,
INCOTERMS_2010_ACTIVE TYPE STRING,
NO_ADDR_SEARCH TYPE STRING,
WSTATE_AUTHORIZATION TYPE STRING,
ALPHA_NUM_ACTIVE TYPE STRING,
UNIFIED_TM_ACTIVE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TAGCO_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_TAGCO_STR-MANDT sy-vline 
WA_TAGCO_STR-XML_LINK_WRITE sy-vline 
WA_TAGCO_STR-ACC_RACHECK sy-vline 
WA_TAGCO_STR-TEXT_HANDLING sy-vline 
WA_TAGCO_STR-CANC_RELCHECK sy-vline 
WA_TAGCO_STR-ARCHIVE_DISPLAY sy-vline 
WA_TAGCO_STR-EVENT_3E_3F sy-vline 
WA_TAGCO_STR-SEPA_ACTIVE sy-vline 
WA_TAGCO_STR-DOCFLOW_ENHANCED sy-vline 
WA_TAGCO_STR-TREE_DOC_FLOW sy-vline 
WA_TAGCO_STR-INCOTERMS_2010_ACTIVE sy-vline 
WA_TAGCO_STR-NO_ADDR_SEARCH sy-vline 
WA_TAGCO_STR-WSTATE_AUTHORIZATION sy-vline 
WA_TAGCO_STR-ALPHA_NUM_ACTIVE sy-vline 
WA_TAGCO_STR-UNIFIED_TM_ACTIVE sy-vline      INTO ld_text SEPARATED BY SPACE.

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