ABAP Select data from SAP table THXT_HR_FLOWS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM THXT_HR_FLOWS
*  INTO TABLE @DATA(IT_THXT_HR_FLOWS2).
*--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_THXT_HR_FLOWS INDEX 1 INTO DATA(WA_THXT_HR_FLOWS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<THXT_HR_FLOWS>-MANDT = 1.
<THXT_HR_FLOWS>-OS_GUID = 1.
<THXT_HR_FLOWS>-FLOW_NUMBER = 1.
<THXT_HR_FLOWS>-UPDATE_TYPE = 1.
<THXT_HR_FLOWS>-HITM_OID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_THXT_HR_FLOWS-HINST_OID, sy-vline,
  WA_THXT_HR_FLOWS-UNITS, sy-vline,
  WA_THXT_HR_FLOWS-QUAN_CAT, sy-vline,
  WA_THXT_HR_FLOWS-NOMINAL_AMT, sy-vline,
  WA_THXT_HR_FLOWS-NOMINAL_ORG_AMT, sy-vline,
  WA_THXT_HR_FLOWS-NOMINAL_CURR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_THXT_HR_FLOWS 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_THXT_HR_FLOWS 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_THXT_HR_FLOWS INTO WA_THXT_HR_FLOWS.


*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_THXT_HR_FLOWS-UNIT_OF_MEASURE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_THXT_HR_FLOWS-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_THXT_HR_FLOWS_STR, 
MANDT TYPE STRING,
OS_GUID TYPE STRING,
FLOW_NUMBER TYPE STRING,
UPDATE_TYPE TYPE STRING,
HITM_OID TYPE STRING,
HINST_OID TYPE STRING,
UNITS TYPE STRING,
QUAN_CAT TYPE STRING,
NOMINAL_AMT TYPE STRING,
NOMINAL_ORG_AMT TYPE STRING,
NOMINAL_CURR TYPE STRING,
SPEC_VAL_PAR_ON TYPE STRING,
SUB_SOURCETARGET TYPE STRING,
SUB_TRANSFERGRP TYPE STRING,
VAL_FLOW_RESET TYPE STRING,
QUANTITY TYPE STRING,
UNIT_OF_MEASURE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_THXT_HR_FLOWS_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_THXT_HR_FLOWS_STR-MANDT sy-vline 
WA_THXT_HR_FLOWS_STR-OS_GUID sy-vline 
WA_THXT_HR_FLOWS_STR-FLOW_NUMBER sy-vline 
WA_THXT_HR_FLOWS_STR-UPDATE_TYPE sy-vline 
WA_THXT_HR_FLOWS_STR-HITM_OID sy-vline 
WA_THXT_HR_FLOWS_STR-HINST_OID sy-vline 
WA_THXT_HR_FLOWS_STR-UNITS sy-vline 
WA_THXT_HR_FLOWS_STR-QUAN_CAT sy-vline 
WA_THXT_HR_FLOWS_STR-NOMINAL_AMT sy-vline 
WA_THXT_HR_FLOWS_STR-NOMINAL_ORG_AMT sy-vline 
WA_THXT_HR_FLOWS_STR-NOMINAL_CURR sy-vline 
WA_THXT_HR_FLOWS_STR-SPEC_VAL_PAR_ON sy-vline 
WA_THXT_HR_FLOWS_STR-SUB_SOURCETARGET sy-vline 
WA_THXT_HR_FLOWS_STR-SUB_TRANSFERGRP sy-vline 
WA_THXT_HR_FLOWS_STR-VAL_FLOW_RESET sy-vline 
WA_THXT_HR_FLOWS_STR-QUANTITY sy-vline 
WA_THXT_HR_FLOWS_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.