ABAP Select data from SAP table /SAPAPO/RET_USER_SEL into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /SAPAPO/RET_USER_SEL 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 /SAPAPO/RET_USER_SEL. 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 /SAPAPO/RET_USER_SEL 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_/SAPAPO/RET_USER_SEL TYPE STANDARD TABLE OF /SAPAPO/RET_USER_SEL,
      WA_/SAPAPO/RET_USER_SEL TYPE /SAPAPO/RET_USER_SEL,
      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: </SAPAPO/RET_USER_SEL> TYPE /SAPAPO/RET_USER_SEL.

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

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /SAPAPO/RET_USER_SEL
  INTO TABLE IT_/SAPAPO/RET_USER_SEL.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SAPAPO/RET_USER_SEL
*  INTO TABLE @DATA(IT_/SAPAPO/RET_USER_SEL2).
*--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_/SAPAPO/RET_USER_SEL INDEX 1 INTO DATA(WA_/SAPAPO/RET_USER_SEL2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/SAPAPO/RET_USER_SEL ASSIGNING </SAPAPO/RET_USER_SEL>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SAPAPO/RET_USER_SEL>-APOVERS = 1.
</SAPAPO/RET_USER_SEL>-APOVERS10 = 1.
</SAPAPO/RET_USER_SEL>-BEDATE = 1.
</SAPAPO/RET_USER_SEL>-BEDATE10 = 1.
</SAPAPO/RET_USER_SEL>-BESHIFT = 1.

ENDLOOP.

LOOP AT IT_/SAPAPO/RET_USER_SEL INTO WA_/SAPAPO/RET_USER_SEL.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SAPAPO/RET_USER_SEL-ENDATE, sy-vline,
  WA_/SAPAPO/RET_USER_SEL-ENDATE10, sy-vline,
  WA_/SAPAPO/RET_USER_SEL-ENSHIFT, sy-vline,
  WA_/SAPAPO/RET_USER_SEL-CALWD, sy-vline,
  WA_/SAPAPO/RET_USER_SEL-APPLICATION, sy-vline,
  WA_/SAPAPO/RET_USER_SEL-RETID_PRESEL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SAPAPO/RET_USER_SEL 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_/SAPAPO/RET_USER_SEL 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_/SAPAPO/RET_USER_SEL INTO WA_/SAPAPO/RET_USER_SEL.


*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 VRSIO, internal->external for field APOVERS
CALL FUNCTION 'CONVERSION_EXIT_VRSIO_OUTPUT'
  EXPORTING
    input =                      WA_/SAPAPO/RET_USER_SEL-APOVERS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPAPO/RET_USER_SEL-APOVERS.
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_/SAPAPO/RET_USER_SEL_STR, 
APOVERS TYPE STRING,
APOVERS10 TYPE STRING,
BEDATE TYPE STRING,
BEDATE10 TYPE STRING,
BESHIFT TYPE STRING,
ENDATE TYPE STRING,
ENDATE10 TYPE STRING,
ENSHIFT TYPE STRING,
CALWD TYPE STRING,
APPLICATION TYPE STRING,
RETID_PRESEL TYPE STRING,
FURTHER_SETS TYPE STRING,
CHANGEPAST TYPE STRING,
SUBTYPE TYPE STRING,
TRANS_MODE TYPE STRING,
MANDT TYPE STRING,
RETUSER TYPE STRING,
TABSEL TYPE STRING,
TABVIEW TYPE STRING,
EFFICIENCY TYPE STRING,
SASH TYPE STRING,
CALCEFF TYPE STRING,
CALCOFFSET TYPE STRING,
MINIMUM TYPE STRING,
RETNAME TYPE STRING,
PERIOD TYPE STRING,
CHANGEBUV TYPE STRING,
CHANGEEFF TYPE STRING,
HORIZON_VPV TYPE STRING,
TABSTRIP TYPE STRING,
DEPEDITOR TYPE STRING,
NDEPEDITOR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SAPAPO/RET_USER_SEL_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_/SAPAPO/RET_USER_SEL_STR-APOVERS sy-vline 
WA_/SAPAPO/RET_USER_SEL_STR-APOVERS10 sy-vline 
WA_/SAPAPO/RET_USER_SEL_STR-BEDATE sy-vline 
WA_/SAPAPO/RET_USER_SEL_STR-BEDATE10 sy-vline 
WA_/SAPAPO/RET_USER_SEL_STR-BESHIFT sy-vline 
WA_/SAPAPO/RET_USER_SEL_STR-ENDATE sy-vline 
WA_/SAPAPO/RET_USER_SEL_STR-ENDATE10 sy-vline 
WA_/SAPAPO/RET_USER_SEL_STR-ENSHIFT sy-vline 
WA_/SAPAPO/RET_USER_SEL_STR-CALWD sy-vline 
WA_/SAPAPO/RET_USER_SEL_STR-APPLICATION sy-vline 
WA_/SAPAPO/RET_USER_SEL_STR-RETID_PRESEL sy-vline 
WA_/SAPAPO/RET_USER_SEL_STR-FURTHER_SETS sy-vline 
WA_/SAPAPO/RET_USER_SEL_STR-CHANGEPAST sy-vline 
WA_/SAPAPO/RET_USER_SEL_STR-SUBTYPE sy-vline 
WA_/SAPAPO/RET_USER_SEL_STR-TRANS_MODE sy-vline 
WA_/SAPAPO/RET_USER_SEL_STR-MANDT sy-vline 
WA_/SAPAPO/RET_USER_SEL_STR-RETUSER sy-vline 
WA_/SAPAPO/RET_USER_SEL_STR-TABSEL sy-vline 
WA_/SAPAPO/RET_USER_SEL_STR-TABVIEW sy-vline 
WA_/SAPAPO/RET_USER_SEL_STR-EFFICIENCY sy-vline 
WA_/SAPAPO/RET_USER_SEL_STR-SASH sy-vline 
WA_/SAPAPO/RET_USER_SEL_STR-CALCEFF sy-vline 
WA_/SAPAPO/RET_USER_SEL_STR-CALCOFFSET sy-vline 
WA_/SAPAPO/RET_USER_SEL_STR-MINIMUM sy-vline 
WA_/SAPAPO/RET_USER_SEL_STR-RETNAME sy-vline 
WA_/SAPAPO/RET_USER_SEL_STR-PERIOD sy-vline 
WA_/SAPAPO/RET_USER_SEL_STR-CHANGEBUV sy-vline 
WA_/SAPAPO/RET_USER_SEL_STR-CHANGEEFF sy-vline 
WA_/SAPAPO/RET_USER_SEL_STR-HORIZON_VPV sy-vline 
WA_/SAPAPO/RET_USER_SEL_STR-TABSTRIP sy-vline 
WA_/SAPAPO/RET_USER_SEL_STR-DEPEDITOR sy-vline 
WA_/SAPAPO/RET_USER_SEL_STR-NDEPEDITOR sy-vline      INTO ld_text SEPARATED BY SPACE.

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