ABAP Select data from SAP table TRLS_FLOW_AND_TRANS into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP TRLS_FLOW_AND_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 TRLS_FLOW_AND_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 TRLS_FLOW_AND_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_TRLS_FLOW_AND_TRANS TYPE STANDARD TABLE OF TRLS_FLOW_AND_TRANS,
      WA_TRLS_FLOW_AND_TRANS TYPE TRLS_FLOW_AND_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: <TRLS_FLOW_AND_TRANS> TYPE TRLS_FLOW_AND_TRANS.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TRLS_FLOW_AND_TRANS
*  INTO TABLE @DATA(IT_TRLS_FLOW_AND_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_TRLS_FLOW_AND_TRANS INDEX 1 INTO DATA(WA_TRLS_FLOW_AND_TRANS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TRLS_FLOW_AND_TRANS>-TRANSACTION = 1.
<TRLS_FLOW_AND_TRANS>-POSITION = 1.
<TRLS_FLOW_AND_TRANS>-TRLFLOWNUMBER = 1.
<TRLS_FLOW_AND_TRANS>-SUBPOSITION = 1.
<TRLS_FLOW_AND_TRANS>-FLOWNUMBER = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TRLS_FLOW_AND_TRANS-SOURCETARGET_FLG, sy-vline,
  WA_TRLS_FLOW_AND_TRANS-TRANSFER_GROUP, sy-vline,
  WA_TRLS_FLOW_AND_TRANS-FLOWTYPE, sy-vline,
  WA_TRLS_FLOW_AND_TRANS-AMOUNT_FACTOR, sy-vline,
  WA_TRLS_FLOW_AND_TRANS-QUANT_CAT, sy-vline,
  WA_TRLS_FLOW_AND_TRANS-AMOUNT_CAT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TRLS_FLOW_AND_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_TRLS_FLOW_AND_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_TRLS_FLOW_AND_TRANS INTO WA_TRLS_FLOW_AND_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_TRLS_FLOW_AND_TRANS-UNIT_OF_MEASURE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TRLS_FLOW_AND_TRANS-UNIT_OF_MEASURE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit POSCT, internal->external for field ACTIVE_PASSIVE
CALL FUNCTION 'CONVERSION_EXIT_POSCT_OUTPUT'
  EXPORTING
    input =                      WA_TRLS_FLOW_AND_TRANS-ACTIVE_PASSIVE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TRLS_FLOW_AND_TRANS-ACTIVE_PASSIVE.
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_TRLS_FLOW_AND_TRANS_STR, 
TRANSACTION TYPE STRING,
POSITION TYPE STRING,
TRLFLOWNUMBER TYPE STRING,
SUBPOSITION TYPE STRING,
FLOWNUMBER TYPE STRING,
SOURCETARGET_FLG TYPE STRING,
TRANSFER_GROUP TYPE STRING,
FLOWTYPE TYPE STRING,
AMOUNT_FACTOR TYPE STRING,
QUANT_CAT TYPE STRING,
AMOUNT_CAT TYPE STRING,
UNITS TYPE STRING,
NOMINAL_AMT TYPE STRING,
NOMINAL_ORG_AMT TYPE STRING,
NOMINAL_CURR TYPE STRING,
POSAMT_IDX_CLEAN TYPE STRING,
POSITION_AMT TYPE STRING,
POSITION_CURR TYPE STRING,
VALUATION_AMT TYPE STRING,
VALUATION_CURR TYPE STRING,
CALCULATION_DATE TYPE STRING,
CALC_DATE_INCL TYPE STRING,
DUE_DATE TYPE STRING,
CALC_BEGIN TYPE STRING,
CALC_END TYPE STRING,
EFF_INT_RATE_U TYPE STRING,
SCHED_EFF_RATE TYPE STRING,
EFF_INT_RATE_N TYPE STRING,
SCHED_FIX TYPE STRING,
BBASIS TYPE STRING,
PAR_USAGE TYPE STRING,
SUB_SOURCETARGET TYPE STRING,
SUB_TRANSFERGRP TYPE STRING,
INIT_CLASSIFIER TYPE STRING,
DCSID TYPE STRING,
QUANTITY TYPE STRING,
UNIT_OF_MEASURE TYPE STRING,
ACTIVE_PASSIVE TYPE STRING,
TRANSACTION_TYPE TYPE STRING,
POSTING_DATE TYPE STRING,
POSTING_STATE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TRLS_FLOW_AND_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_TRLS_FLOW_AND_TRANS_STR-TRANSACTION sy-vline 
WA_TRLS_FLOW_AND_TRANS_STR-POSITION sy-vline 
WA_TRLS_FLOW_AND_TRANS_STR-TRLFLOWNUMBER sy-vline 
WA_TRLS_FLOW_AND_TRANS_STR-SUBPOSITION sy-vline 
WA_TRLS_FLOW_AND_TRANS_STR-FLOWNUMBER sy-vline 
WA_TRLS_FLOW_AND_TRANS_STR-SOURCETARGET_FLG sy-vline 
WA_TRLS_FLOW_AND_TRANS_STR-TRANSFER_GROUP sy-vline 
WA_TRLS_FLOW_AND_TRANS_STR-FLOWTYPE sy-vline 
WA_TRLS_FLOW_AND_TRANS_STR-AMOUNT_FACTOR sy-vline 
WA_TRLS_FLOW_AND_TRANS_STR-QUANT_CAT sy-vline 
WA_TRLS_FLOW_AND_TRANS_STR-AMOUNT_CAT sy-vline 
WA_TRLS_FLOW_AND_TRANS_STR-UNITS sy-vline 
WA_TRLS_FLOW_AND_TRANS_STR-NOMINAL_AMT sy-vline 
WA_TRLS_FLOW_AND_TRANS_STR-NOMINAL_ORG_AMT sy-vline 
WA_TRLS_FLOW_AND_TRANS_STR-NOMINAL_CURR sy-vline 
WA_TRLS_FLOW_AND_TRANS_STR-POSAMT_IDX_CLEAN sy-vline 
WA_TRLS_FLOW_AND_TRANS_STR-POSITION_AMT sy-vline 
WA_TRLS_FLOW_AND_TRANS_STR-POSITION_CURR sy-vline 
WA_TRLS_FLOW_AND_TRANS_STR-VALUATION_AMT sy-vline 
WA_TRLS_FLOW_AND_TRANS_STR-VALUATION_CURR sy-vline 
WA_TRLS_FLOW_AND_TRANS_STR-CALCULATION_DATE sy-vline 
WA_TRLS_FLOW_AND_TRANS_STR-CALC_DATE_INCL sy-vline 
WA_TRLS_FLOW_AND_TRANS_STR-DUE_DATE sy-vline 
WA_TRLS_FLOW_AND_TRANS_STR-CALC_BEGIN sy-vline 
WA_TRLS_FLOW_AND_TRANS_STR-CALC_END sy-vline 
WA_TRLS_FLOW_AND_TRANS_STR-EFF_INT_RATE_U sy-vline 
WA_TRLS_FLOW_AND_TRANS_STR-SCHED_EFF_RATE sy-vline 
WA_TRLS_FLOW_AND_TRANS_STR-EFF_INT_RATE_N sy-vline 
WA_TRLS_FLOW_AND_TRANS_STR-SCHED_FIX sy-vline 
WA_TRLS_FLOW_AND_TRANS_STR-BBASIS sy-vline 
WA_TRLS_FLOW_AND_TRANS_STR-PAR_USAGE sy-vline 
WA_TRLS_FLOW_AND_TRANS_STR-SUB_SOURCETARGET sy-vline 
WA_TRLS_FLOW_AND_TRANS_STR-SUB_TRANSFERGRP sy-vline 
WA_TRLS_FLOW_AND_TRANS_STR-INIT_CLASSIFIER sy-vline 
WA_TRLS_FLOW_AND_TRANS_STR-DCSID sy-vline 
WA_TRLS_FLOW_AND_TRANS_STR-QUANTITY sy-vline 
WA_TRLS_FLOW_AND_TRANS_STR-UNIT_OF_MEASURE sy-vline 
WA_TRLS_FLOW_AND_TRANS_STR-ACTIVE_PASSIVE sy-vline 
WA_TRLS_FLOW_AND_TRANS_STR-TRANSACTION_TYPE sy-vline 
WA_TRLS_FLOW_AND_TRANS_STR-POSTING_DATE sy-vline 
WA_TRLS_FLOW_AND_TRANS_STR-POSTING_STATE sy-vline      INTO ld_text SEPARATED BY SPACE.

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