ABAP Select data from SAP table TRCOS_CTY_MASTER into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TRCOS_CTY_MASTER
*  INTO TABLE @DATA(IT_TRCOS_CTY_MASTER2).
*--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_TRCOS_CTY_MASTER INDEX 1 INTO DATA(WA_TRCOS_CTY_MASTER2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TRCOS_CTY_MASTER>-COMMODITY_ID = 1.
<TRCOS_CTY_MASTER>-COMMODITY_TYPE = 1.
<TRCOS_CTY_MASTER>-COMMODITY_CAT = 1.
<TRCOS_CTY_MASTER>-COMMODITY_NAME = 1.
<TRCOS_CTY_MASTER>-COMMODITY_UOM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TRCOS_CTY_MASTER-CURRENCY_UNIT, sy-vline,
  WA_TRCOS_CTY_MASTER-DEFAULT_CURRENCY, sy-vline,
  WA_TRCOS_CTY_MASTER-ACTIVE, sy-vline,
  WA_TRCOS_CTY_MASTER-GROUP1, sy-vline,
  WA_TRCOS_CTY_MASTER-GROUP2, sy-vline,
  WA_TRCOS_CTY_MASTER-QUOTNAME, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TRCOS_CTY_MASTER 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_TRCOS_CTY_MASTER 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_TRCOS_CTY_MASTER INTO WA_TRCOS_CTY_MASTER.


*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 COMMODITY_TYPE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_TRCOS_CTY_MASTER-COMMODITY_TYPE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TRCOS_CTY_MASTER-COMMODITY_TYPE.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit CUNIT, internal->external for field COMMODITY_UOM
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_TRCOS_CTY_MASTER-COMMODITY_UOM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TRCOS_CTY_MASTER-COMMODITY_UOM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field GROUP1
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_TRCOS_CTY_MASTER-GROUP1
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TRCOS_CTY_MASTER-GROUP1.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field GROUP2
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_TRCOS_CTY_MASTER-GROUP2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TRCOS_CTY_MASTER-GROUP2.
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_TRCOS_CTY_MASTER_STR, 
COMMODITY_ID TYPE STRING,
COMMODITY_TYPE TYPE STRING,
COMMODITY_CAT TYPE STRING,
COMMODITY_NAME TYPE STRING,
COMMODITY_UOM TYPE STRING,
CURRENCY_UNIT TYPE STRING,
DEFAULT_CURRENCY TYPE STRING,
ACTIVE TYPE STRING,
GROUP1 TYPE STRING,
GROUP2 TYPE STRING,
QUOTNAME TYPE STRING,
ENTERED_BY TYPE STRING,
ENTERED_DATE TYPE STRING,
ENTERED_TIME TYPE STRING,
CHANGED_BY TYPE STRING,
CHANGED_DATE TYPE STRING,
CHANGED_TIME TYPE STRING,
LOCATION TYPE STRING,
COMMODITY_KIND TYPE STRING,
PARENT_CTY_ID TYPE STRING,
REF_COMMODITY_ID TYPE STRING,
INCOTERMS TYPE STRING,
PHYSCOMM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TRCOS_CTY_MASTER_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_TRCOS_CTY_MASTER_STR-COMMODITY_ID sy-vline 
WA_TRCOS_CTY_MASTER_STR-COMMODITY_TYPE sy-vline 
WA_TRCOS_CTY_MASTER_STR-COMMODITY_CAT sy-vline 
WA_TRCOS_CTY_MASTER_STR-COMMODITY_NAME sy-vline 
WA_TRCOS_CTY_MASTER_STR-COMMODITY_UOM sy-vline 
WA_TRCOS_CTY_MASTER_STR-CURRENCY_UNIT sy-vline 
WA_TRCOS_CTY_MASTER_STR-DEFAULT_CURRENCY sy-vline 
WA_TRCOS_CTY_MASTER_STR-ACTIVE sy-vline 
WA_TRCOS_CTY_MASTER_STR-GROUP1 sy-vline 
WA_TRCOS_CTY_MASTER_STR-GROUP2 sy-vline 
WA_TRCOS_CTY_MASTER_STR-QUOTNAME sy-vline 
WA_TRCOS_CTY_MASTER_STR-ENTERED_BY sy-vline 
WA_TRCOS_CTY_MASTER_STR-ENTERED_DATE sy-vline 
WA_TRCOS_CTY_MASTER_STR-ENTERED_TIME sy-vline 
WA_TRCOS_CTY_MASTER_STR-CHANGED_BY sy-vline 
WA_TRCOS_CTY_MASTER_STR-CHANGED_DATE sy-vline 
WA_TRCOS_CTY_MASTER_STR-CHANGED_TIME sy-vline 
WA_TRCOS_CTY_MASTER_STR-LOCATION sy-vline 
WA_TRCOS_CTY_MASTER_STR-COMMODITY_KIND sy-vline 
WA_TRCOS_CTY_MASTER_STR-PARENT_CTY_ID sy-vline 
WA_TRCOS_CTY_MASTER_STR-REF_COMMODITY_ID sy-vline 
WA_TRCOS_CTY_MASTER_STR-INCOTERMS sy-vline 
WA_TRCOS_CTY_MASTER_STR-PHYSCOMM sy-vline      INTO ld_text SEPARATED BY SPACE.

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