ABAP Select data from SAP table IFLO_USR1U into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP IFLO_USR1U 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 IFLO_USR1U. 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 IFLO_USR1U 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_IFLO_USR1U TYPE STANDARD TABLE OF IFLO_USR1U,
      WA_IFLO_USR1U TYPE IFLO_USR1U,
      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: <IFLO_USR1U> TYPE IFLO_USR1U.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_IFLO_USR1U.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM IFLO_USR1U
  INTO TABLE IT_IFLO_USR1U.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IFLO_USR1U
*  INTO TABLE @DATA(IT_IFLO_USR1U2).
*--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_IFLO_USR1U INDEX 1 INTO DATA(WA_IFLO_USR1U2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_IFLO_USR1U ASSIGNING <IFLO_USR1U>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IFLO_USR1U>-BEGRU = 1.
<IFLO_USR1U>-EQART = 1.
<IFLO_USR1U>-INVNR = 1.
<IFLO_USR1U>-GROES = 1.
<IFLO_USR1U>-BRGEW = 1.

ENDLOOP.

LOOP AT IT_IFLO_USR1U INTO WA_IFLO_USR1U.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IFLO_USR1U-GEWEI, sy-vline,
  WA_IFLO_USR1U-ANSDT, sy-vline,
  WA_IFLO_USR1U-ANSWT, sy-vline,
  WA_IFLO_USR1U-WAERS, sy-vline,
  WA_IFLO_USR1U-HERST, sy-vline,
  WA_IFLO_USR1U-HERLD, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IFLO_USR1U 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_IFLO_USR1U 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_IFLO_USR1U INTO WA_IFLO_USR1U.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_IFLO_USR1U_STR, 
BEGRU TYPE STRING,
EQART TYPE STRING,
INVNR TYPE STRING,
GROES TYPE STRING,
BRGEW TYPE STRING,
GEWEI TYPE STRING,
ANSDT TYPE STRING,
ANSWT TYPE STRING,
WAERS TYPE STRING,
HERST TYPE STRING,
HERLD TYPE STRING,
SERGE TYPE STRING,
TYPBZ TYPE STRING,
BAUJJ TYPE STRING,
BAUMM TYPE STRING,
UII TYPE STRING,
DATAB TYPE STRING,
POSNR TYPE STRING,
EQFNR TYPE STRING,
MSGRP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IFLO_USR1U_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_IFLO_USR1U_STR-BEGRU sy-vline 
WA_IFLO_USR1U_STR-EQART sy-vline 
WA_IFLO_USR1U_STR-INVNR sy-vline 
WA_IFLO_USR1U_STR-GROES sy-vline 
WA_IFLO_USR1U_STR-BRGEW sy-vline 
WA_IFLO_USR1U_STR-GEWEI sy-vline 
WA_IFLO_USR1U_STR-ANSDT sy-vline 
WA_IFLO_USR1U_STR-ANSWT sy-vline 
WA_IFLO_USR1U_STR-WAERS sy-vline 
WA_IFLO_USR1U_STR-HERST sy-vline 
WA_IFLO_USR1U_STR-HERLD sy-vline 
WA_IFLO_USR1U_STR-SERGE sy-vline 
WA_IFLO_USR1U_STR-TYPBZ sy-vline 
WA_IFLO_USR1U_STR-BAUJJ sy-vline 
WA_IFLO_USR1U_STR-BAUMM sy-vline 
WA_IFLO_USR1U_STR-UII sy-vline 
WA_IFLO_USR1U_STR-DATAB sy-vline 
WA_IFLO_USR1U_STR-POSNR sy-vline 
WA_IFLO_USR1U_STR-EQFNR sy-vline 
WA_IFLO_USR1U_STR-MSGRP sy-vline      INTO ld_text SEPARATED BY SPACE.

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