ABAP Select data from SAP table TRLAS_INTERFACE_FLOW into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TRLAS_INTERFACE_FLOW
*  INTO TABLE @DATA(IT_TRLAS_INTERFACE_FLOW2).
*--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_TRLAS_INTERFACE_FLOW INDEX 1 INTO DATA(WA_TRLAS_INTERFACE_FLOW2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TRLAS_INTERFACE_FLOW>-FLOWTYPE = 1.
<TRLAS_INTERFACE_FLOW>-FLOW_NUMBER = 1.
<TRLAS_INTERFACE_FLOW>-PA_COMPANY_ID = 1.
<TRLAS_INTERFACE_FLOW>-ORIGIN_DATE = 1.
<TRLAS_INTERFACE_FLOW>-HINST_OID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TRLAS_INTERFACE_FLOW-HITEM_OID, sy-vline,
  WA_TRLAS_INTERFACE_FLOW-FLG_FREESTANDING, sy-vline,
  WA_TRLAS_INTERFACE_FLOW-QUANT_CAT, sy-vline,
  WA_TRLAS_INTERFACE_FLOW-AMOUNT_CAT, sy-vline,
  WA_TRLAS_INTERFACE_FLOW-UNITS, sy-vline,
  WA_TRLAS_INTERFACE_FLOW-NOMINAL_AMT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TRLAS_INTERFACE_FLOW 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_TRLAS_INTERFACE_FLOW 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_TRLAS_INTERFACE_FLOW INTO WA_TRLAS_INTERFACE_FLOW.


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

*Conversion exit POSCT, internal->external for field ACTIVE_PASSIVE
CALL FUNCTION 'CONVERSION_EXIT_POSCT_OUTPUT'
  EXPORTING
    input =                      WA_TRLAS_INTERFACE_FLOW-ACTIVE_PASSIVE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TRLAS_INTERFACE_FLOW-ACTIVE_PASSIVE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field UNIT_OF_MEASURE
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_TRLAS_INTERFACE_FLOW-UNIT_OF_MEASURE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TRLAS_INTERFACE_FLOW-UNIT_OF_MEASURE.
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_TRLAS_INTERFACE_FLOW_STR, 
FLOWTYPE TYPE STRING,
FLOW_NUMBER TYPE STRING,
PA_COMPANY_ID TYPE STRING,
ORIGIN_DATE TYPE STRING,
HINST_OID TYPE STRING,
HITEM_OID TYPE STRING,
FLG_FREESTANDING 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,
SOURCETARGET_FLG TYPE STRING,
TRANSFER_GROUP TYPE STRING,
AMOUNT_FACTOR TYPE STRING,
ACTIVE_PASSIVE TYPE STRING,
TRANSACTION_TYPE 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,END OF T_EKKO_STR.
DATA: WA_TRLAS_INTERFACE_FLOW_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_TRLAS_INTERFACE_FLOW_STR-FLOWTYPE sy-vline 
WA_TRLAS_INTERFACE_FLOW_STR-FLOW_NUMBER sy-vline 
WA_TRLAS_INTERFACE_FLOW_STR-PA_COMPANY_ID sy-vline 
WA_TRLAS_INTERFACE_FLOW_STR-ORIGIN_DATE sy-vline 
WA_TRLAS_INTERFACE_FLOW_STR-HINST_OID sy-vline 
WA_TRLAS_INTERFACE_FLOW_STR-HITEM_OID sy-vline 
WA_TRLAS_INTERFACE_FLOW_STR-FLG_FREESTANDING sy-vline 
WA_TRLAS_INTERFACE_FLOW_STR-QUANT_CAT sy-vline 
WA_TRLAS_INTERFACE_FLOW_STR-AMOUNT_CAT sy-vline 
WA_TRLAS_INTERFACE_FLOW_STR-UNITS sy-vline 
WA_TRLAS_INTERFACE_FLOW_STR-NOMINAL_AMT sy-vline 
WA_TRLAS_INTERFACE_FLOW_STR-NOMINAL_ORG_AMT sy-vline 
WA_TRLAS_INTERFACE_FLOW_STR-NOMINAL_CURR sy-vline 
WA_TRLAS_INTERFACE_FLOW_STR-POSAMT_IDX_CLEAN sy-vline 
WA_TRLAS_INTERFACE_FLOW_STR-POSITION_AMT sy-vline 
WA_TRLAS_INTERFACE_FLOW_STR-POSITION_CURR sy-vline 
WA_TRLAS_INTERFACE_FLOW_STR-VALUATION_AMT sy-vline 
WA_TRLAS_INTERFACE_FLOW_STR-VALUATION_CURR sy-vline 
WA_TRLAS_INTERFACE_FLOW_STR-SOURCETARGET_FLG sy-vline 
WA_TRLAS_INTERFACE_FLOW_STR-TRANSFER_GROUP sy-vline 
WA_TRLAS_INTERFACE_FLOW_STR-AMOUNT_FACTOR sy-vline 
WA_TRLAS_INTERFACE_FLOW_STR-ACTIVE_PASSIVE sy-vline 
WA_TRLAS_INTERFACE_FLOW_STR-TRANSACTION_TYPE sy-vline 
WA_TRLAS_INTERFACE_FLOW_STR-CALCULATION_DATE sy-vline 
WA_TRLAS_INTERFACE_FLOW_STR-CALC_DATE_INCL sy-vline 
WA_TRLAS_INTERFACE_FLOW_STR-DUE_DATE sy-vline 
WA_TRLAS_INTERFACE_FLOW_STR-CALC_BEGIN sy-vline 
WA_TRLAS_INTERFACE_FLOW_STR-CALC_END sy-vline 
WA_TRLAS_INTERFACE_FLOW_STR-EFF_INT_RATE_U sy-vline 
WA_TRLAS_INTERFACE_FLOW_STR-SCHED_EFF_RATE sy-vline 
WA_TRLAS_INTERFACE_FLOW_STR-EFF_INT_RATE_N sy-vline 
WA_TRLAS_INTERFACE_FLOW_STR-SCHED_FIX sy-vline 
WA_TRLAS_INTERFACE_FLOW_STR-BBASIS sy-vline 
WA_TRLAS_INTERFACE_FLOW_STR-PAR_USAGE sy-vline 
WA_TRLAS_INTERFACE_FLOW_STR-SUB_SOURCETARGET sy-vline 
WA_TRLAS_INTERFACE_FLOW_STR-SUB_TRANSFERGRP sy-vline 
WA_TRLAS_INTERFACE_FLOW_STR-INIT_CLASSIFIER sy-vline 
WA_TRLAS_INTERFACE_FLOW_STR-DCSID sy-vline 
WA_TRLAS_INTERFACE_FLOW_STR-QUANTITY sy-vline 
WA_TRLAS_INTERFACE_FLOW_STR-UNIT_OF_MEASURE sy-vline      INTO ld_text SEPARATED BY SPACE.

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