ABAP Select data from SAP table TRQV_ASSIGN 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 TRQV_ASSIGN 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 TRQV_ASSIGN. 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 TRQV_ASSIGN 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_TRQV_ASSIGN TYPE STANDARD TABLE OF TRQV_ASSIGN,
      WA_TRQV_ASSIGN TYPE TRQV_ASSIGN,
      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: <TRQV_ASSIGN> TYPE TRQV_ASSIGN.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TRQV_ASSIGN
*  INTO TABLE @DATA(IT_TRQV_ASSIGN2).
*--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_TRQV_ASSIGN INDEX 1 INTO DATA(WA_TRQV_ASSIGN2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TRQV_ASSIGN>-MANDT_RULE = 1.
<TRQV_ASSIGN>-COMPANY_CODE = 1.
<TRQV_ASSIGN>-BUSTRANSID = 1.
<TRQV_ASSIGN>-EXTBUSTRANSID = 1.
<TRQV_ASSIGN>-DEAL_NUMBER = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TRQV_ASSIGN-MANDT, sy-vline,
  WA_TRQV_ASSIGN-LOT_ID, sy-vline,
  WA_TRQV_ASSIGN-CONTRIBUTION, sy-vline,
  WA_TRQV_ASSIGN-TRANSFER_GROUP, sy-vline,
  WA_TRQV_ASSIGN-LOT_ID_REF, sy-vline,
  WA_TRQV_ASSIGN-FLOWGROUP_GUID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TRQV_ASSIGN 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_TRQV_ASSIGN 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_TRQV_ASSIGN INTO WA_TRQV_ASSIGN.


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

*Conversion exit ALPHA, internal->external for field SECURITY_ID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_TRQV_ASSIGN-SECURITY_ID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TRQV_ASSIGN-SECURITY_ID.
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_TRQV_ASSIGN_STR, 
MANDT_RULE TYPE STRING,
COMPANY_CODE TYPE STRING,
BUSTRANSID TYPE STRING,
EXTBUSTRANSID TYPE STRING,
DEAL_NUMBER TYPE STRING,
MANDT TYPE STRING,
LOT_ID TYPE STRING,
CONTRIBUTION TYPE STRING,
TRANSFER_GROUP TYPE STRING,
LOT_ID_REF TYPE STRING,
FLOWGROUP_GUID TYPE STRING,
ASSIGNMENT_GUID TYPE STRING,
ITEM_GUID TYPE STRING,
BUSTRANS_GUID TYPE STRING,
BUSTRANSCAT TYPE STRING,
POSITION_GUID TYPE STRING,
SELECTOR_GUID TYPE STRING,
COM_VAL_CLASS TYPE STRING,
SECURITY_ACCOUNT TYPE STRING,
SECURITY_ID TYPE STRING,
PORTFOLIO TYPE STRING,
POSITION_ACCOUNT TYPE STRING,
FLAG_LONG_SHORT TYPE STRING,
CONSUMPTION_CAT TYPE STRING,
TRDBUSTRANS_GUID TYPE STRING,
TRANSFER_GROUPFG TYPE STRING,
SOURCETARGET_FLG TYPE STRING,
LOT_CREATION TYPE STRING,
MANDT_FG TYPE STRING,
MANDT_BT TYPE STRING,
MANDT_TRD_BT TYPE STRING,
MANDT_POS TYPE STRING,
MANDT_DIF TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TRQV_ASSIGN_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_TRQV_ASSIGN_STR-MANDT_RULE sy-vline 
WA_TRQV_ASSIGN_STR-COMPANY_CODE sy-vline 
WA_TRQV_ASSIGN_STR-BUSTRANSID sy-vline 
WA_TRQV_ASSIGN_STR-EXTBUSTRANSID sy-vline 
WA_TRQV_ASSIGN_STR-DEAL_NUMBER sy-vline 
WA_TRQV_ASSIGN_STR-MANDT sy-vline 
WA_TRQV_ASSIGN_STR-LOT_ID sy-vline 
WA_TRQV_ASSIGN_STR-CONTRIBUTION sy-vline 
WA_TRQV_ASSIGN_STR-TRANSFER_GROUP sy-vline 
WA_TRQV_ASSIGN_STR-LOT_ID_REF sy-vline 
WA_TRQV_ASSIGN_STR-FLOWGROUP_GUID sy-vline 
WA_TRQV_ASSIGN_STR-ASSIGNMENT_GUID sy-vline 
WA_TRQV_ASSIGN_STR-ITEM_GUID sy-vline 
WA_TRQV_ASSIGN_STR-BUSTRANS_GUID sy-vline 
WA_TRQV_ASSIGN_STR-BUSTRANSCAT sy-vline 
WA_TRQV_ASSIGN_STR-POSITION_GUID sy-vline 
WA_TRQV_ASSIGN_STR-SELECTOR_GUID sy-vline 
WA_TRQV_ASSIGN_STR-COM_VAL_CLASS sy-vline 
WA_TRQV_ASSIGN_STR-SECURITY_ACCOUNT sy-vline 
WA_TRQV_ASSIGN_STR-SECURITY_ID sy-vline 
WA_TRQV_ASSIGN_STR-PORTFOLIO sy-vline 
WA_TRQV_ASSIGN_STR-POSITION_ACCOUNT sy-vline 
WA_TRQV_ASSIGN_STR-FLAG_LONG_SHORT sy-vline 
WA_TRQV_ASSIGN_STR-CONSUMPTION_CAT sy-vline 
WA_TRQV_ASSIGN_STR-TRDBUSTRANS_GUID sy-vline 
WA_TRQV_ASSIGN_STR-TRANSFER_GROUPFG sy-vline 
WA_TRQV_ASSIGN_STR-SOURCETARGET_FLG sy-vline 
WA_TRQV_ASSIGN_STR-LOT_CREATION sy-vline 
WA_TRQV_ASSIGN_STR-MANDT_FG sy-vline 
WA_TRQV_ASSIGN_STR-MANDT_BT sy-vline 
WA_TRQV_ASSIGN_STR-MANDT_TRD_BT sy-vline 
WA_TRQV_ASSIGN_STR-MANDT_POS sy-vline 
WA_TRQV_ASSIGN_STR-MANDT_DIF sy-vline      INTO ld_text SEPARATED BY SPACE.

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