ABAP Select data from SAP table TRQS_POS_FLOW_TRANS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TRQS_POS_FLOW_TRANS
*  INTO TABLE @DATA(IT_TRQS_POS_FLOW_TRANS2).
*--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_TRQS_POS_FLOW_TRANS INDEX 1 INTO DATA(WA_TRQS_POS_FLOW_TRANS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TRQS_POS_FLOW_TRANS>-POSFLOW_GUID = 1.
<TRQS_POS_FLOW_TRANS>-LOTFLOW_GUID = 1.
<TRQS_POS_FLOW_TRANS>-OTC_LOT_ID = 1.
<TRQS_POS_FLOW_TRANS>-FLOW_GUID = 1.
<TRQS_POS_FLOW_TRANS>-TRD_TRANSACTION = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TRQS_POS_FLOW_TRANS-TRD_FLOWNR, sy-vline,
  WA_TRQS_POS_FLOW_TRANS-DIS_FLOWTYPE, sy-vline,
  WA_TRQS_POS_FLOW_TRANS-TRANSACTION_TYPE, sy-vline,
  WA_TRQS_POS_FLOW_TRANS-DCSID, sy-vline,
  WA_TRQS_POS_FLOW_TRANS-UNITS, sy-vline,
  WA_TRQS_POS_FLOW_TRANS-NOMINAL_CURR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TRQS_POS_FLOW_TRANS 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_TRQS_POS_FLOW_TRANS 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_TRQS_POS_FLOW_TRANS INTO WA_TRQS_POS_FLOW_TRANS.


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

*Conversion exit ALPHA, internal->external for field COUNTERPARTY
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_TRQS_POS_FLOW_TRANS-COUNTERPARTY
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TRQS_POS_FLOW_TRANS-COUNTERPARTY.
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_TRQS_POS_FLOW_TRANS_STR, 
POSFLOW_GUID TYPE STRING,
LOTFLOW_GUID TYPE STRING,
OTC_LOT_ID TYPE STRING,
FLOW_GUID TYPE STRING,
TRD_TRANSACTION TYPE STRING,
TRD_FLOWNR TYPE STRING,
DIS_FLOWTYPE TYPE STRING,
TRANSACTION_TYPE TYPE STRING,
DCSID TYPE STRING,
UNITS TYPE STRING,
NOMINAL_CURR TYPE STRING,
NOMINAL_AMT TYPE STRING,
NOMINAL_ORG_AMT TYPE STRING,
POSITION_CURR TYPE STRING,
POSITION_AMT TYPE STRING,
POSAMT_IDX_CLEAN TYPE STRING,
POSITION_DATE TYPE STRING,
QUANT_CAT TYPE STRING,
TRD_POSITION_DATE TYPE STRING,
QUANTITY TYPE STRING,
UNIT_OF_MEASURE TYPE STRING,
LOCAL_CURR TYPE STRING,
LOCAL_AMT TYPE STRING,
SOURCETARGET_FLG TYPE STRING,
TRANSFER_GROUP TYPE STRING,
LOT_CREATION TYPE STRING,
PAYMENT_CURR TYPE STRING,
PAYMENT_AMT TYPE STRING,
CALCULATION_DATE TYPE STRING,
CALC_DATE_INCL TYPE STRING,
CALC_BEGIN TYPE STRING,
CALC_END TYPE STRING,
BBASIS TYPE STRING,
RKONDGR TYPE STRING,
COUNTERPARTY TYPE STRING,
BUSTRANSCAT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TRQS_POS_FLOW_TRANS_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_TRQS_POS_FLOW_TRANS_STR-POSFLOW_GUID sy-vline 
WA_TRQS_POS_FLOW_TRANS_STR-LOTFLOW_GUID sy-vline 
WA_TRQS_POS_FLOW_TRANS_STR-OTC_LOT_ID sy-vline 
WA_TRQS_POS_FLOW_TRANS_STR-FLOW_GUID sy-vline 
WA_TRQS_POS_FLOW_TRANS_STR-TRD_TRANSACTION sy-vline 
WA_TRQS_POS_FLOW_TRANS_STR-TRD_FLOWNR sy-vline 
WA_TRQS_POS_FLOW_TRANS_STR-DIS_FLOWTYPE sy-vline 
WA_TRQS_POS_FLOW_TRANS_STR-TRANSACTION_TYPE sy-vline 
WA_TRQS_POS_FLOW_TRANS_STR-DCSID sy-vline 
WA_TRQS_POS_FLOW_TRANS_STR-UNITS sy-vline 
WA_TRQS_POS_FLOW_TRANS_STR-NOMINAL_CURR sy-vline 
WA_TRQS_POS_FLOW_TRANS_STR-NOMINAL_AMT sy-vline 
WA_TRQS_POS_FLOW_TRANS_STR-NOMINAL_ORG_AMT sy-vline 
WA_TRQS_POS_FLOW_TRANS_STR-POSITION_CURR sy-vline 
WA_TRQS_POS_FLOW_TRANS_STR-POSITION_AMT sy-vline 
WA_TRQS_POS_FLOW_TRANS_STR-POSAMT_IDX_CLEAN sy-vline 
WA_TRQS_POS_FLOW_TRANS_STR-POSITION_DATE sy-vline 
WA_TRQS_POS_FLOW_TRANS_STR-QUANT_CAT sy-vline 
WA_TRQS_POS_FLOW_TRANS_STR-TRD_POSITION_DATE sy-vline 
WA_TRQS_POS_FLOW_TRANS_STR-QUANTITY sy-vline 
WA_TRQS_POS_FLOW_TRANS_STR-UNIT_OF_MEASURE sy-vline 
WA_TRQS_POS_FLOW_TRANS_STR-LOCAL_CURR sy-vline 
WA_TRQS_POS_FLOW_TRANS_STR-LOCAL_AMT sy-vline 
WA_TRQS_POS_FLOW_TRANS_STR-SOURCETARGET_FLG sy-vline 
WA_TRQS_POS_FLOW_TRANS_STR-TRANSFER_GROUP sy-vline 
WA_TRQS_POS_FLOW_TRANS_STR-LOT_CREATION sy-vline 
WA_TRQS_POS_FLOW_TRANS_STR-PAYMENT_CURR sy-vline 
WA_TRQS_POS_FLOW_TRANS_STR-PAYMENT_AMT sy-vline 
WA_TRQS_POS_FLOW_TRANS_STR-CALCULATION_DATE sy-vline 
WA_TRQS_POS_FLOW_TRANS_STR-CALC_DATE_INCL sy-vline 
WA_TRQS_POS_FLOW_TRANS_STR-CALC_BEGIN sy-vline 
WA_TRQS_POS_FLOW_TRANS_STR-CALC_END sy-vline 
WA_TRQS_POS_FLOW_TRANS_STR-BBASIS sy-vline 
WA_TRQS_POS_FLOW_TRANS_STR-RKONDGR sy-vline 
WA_TRQS_POS_FLOW_TRANS_STR-COUNTERPARTY sy-vline 
WA_TRQS_POS_FLOW_TRANS_STR-BUSTRANSCAT sy-vline      INTO ld_text SEPARATED BY SPACE.

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