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

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SAPAPO/S_TRTYPEIO
*  INTO TABLE @DATA(IT_/SAPAPO/S_TRTYPEIO2).
*--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/S_TRTYPEIO INDEX 1 INTO DATA(WA_/SAPAPO/S_TRTYPEIO2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SAPAPO/S_TRTYPEIO>-TTYPE = 1.
</SAPAPO/S_TRTYPEIO>-TTYPETXT = 1.
</SAPAPO/S_TRTYPEIO>-MOTSCODE = 1.
</SAPAPO/S_TRTYPEIO>-DAVGVEL = 1.
</SAPAPO/S_TRTYPEIO>-DVELUNIT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SAPAPO/S_TRTYPEIO-DISTFAC, sy-vline,
  WA_/SAPAPO/S_TRTYPEIO-FIXTIME, sy-vline,
  WA_/SAPAPO/S_TRTYPEIO-AVGWTIME, sy-vline,
  WA_/SAPAPO/S_TRTYPEIO-COMPTFLG, sy-vline,
  WA_/SAPAPO/S_TRTYPEIO-TRMODE, sy-vline,
  WA_/SAPAPO/S_TRTYPEIO-OWNTTYPFLG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SAPAPO/S_TRTYPEIO 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/S_TRTYPEIO 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/S_TRTYPEIO INTO WA_/SAPAPO/S_TRTYPEIO.


*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 DVELUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_/SAPAPO/S_TRTYPEIO-DVELUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPAPO/S_TRTYPEIO-DVELUNIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSTRN, internal->external for field FIXTIME
CALL FUNCTION 'CONVERSION_EXIT_TSTRN_OUTPUT'
  EXPORTING
    input =                      WA_/SAPAPO/S_TRTYPEIO-FIXTIME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPAPO/S_TRTYPEIO-FIXTIME.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSTRN, internal->external for field AVGWTIME
CALL FUNCTION 'CONVERSION_EXIT_TSTRN_OUTPUT'
  EXPORTING
    input =                      WA_/SAPAPO/S_TRTYPEIO-AVGWTIME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPAPO/S_TRTYPEIO-AVGWTIME.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field LOAD_UOM_WGT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_/SAPAPO/S_TRTYPEIO-LOAD_UOM_WGT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPAPO/S_TRTYPEIO-LOAD_UOM_WGT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field LOAD_UOM_VOL
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_/SAPAPO/S_TRTYPEIO-LOAD_UOM_VOL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPAPO/S_TRTYPEIO-LOAD_UOM_VOL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field LOAD_UOM_LWH
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_/SAPAPO/S_TRTYPEIO-LOAD_UOM_LWH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPAPO/S_TRTYPEIO-LOAD_UOM_LWH.
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/S_TRTYPEIO_STR, 
TTYPE TYPE STRING,
TTYPETXT TYPE STRING,
MOTSCODE TYPE STRING,
DAVGVEL TYPE STRING,
DVELUNIT TYPE STRING,
DISTFAC TYPE STRING,
FIXTIME TYPE STRING,
AVGWTIME TYPE STRING,
COMPTFLG TYPE STRING,
TRMODE TYPE STRING,
OWNTTYPFLG TYPE STRING,
RESNAME TYPE STRING,
TTCONNFLG TYPE STRING,
TSWFLG TYPE STRING,
IGS_QUALITY TYPE STRING,
VELO_LOW TYPE STRING,
VELO_MEDIUM TYPE STRING,
VELO_HIGH TYPE STRING,
LOAD_WEIGHT TYPE STRING,
LOAD_UOM_WGT TYPE STRING,
LOAD_VOLUME TYPE STRING,
LOAD_UOM_VOL TYPE STRING,
LOAD_LENGTH TYPE STRING,
LOAD_WIDTH TYPE STRING,
LOAD_HEIGHT TYPE STRING,
LOAD_UOM_LWH TYPE STRING,
DGMOT TYPE STRING,
TTYPE_PARENT TYPE STRING,
TTYPETXT_PARENT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SAPAPO/S_TRTYPEIO_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/S_TRTYPEIO_STR-TTYPE sy-vline 
WA_/SAPAPO/S_TRTYPEIO_STR-TTYPETXT sy-vline 
WA_/SAPAPO/S_TRTYPEIO_STR-MOTSCODE sy-vline 
WA_/SAPAPO/S_TRTYPEIO_STR-DAVGVEL sy-vline 
WA_/SAPAPO/S_TRTYPEIO_STR-DVELUNIT sy-vline 
WA_/SAPAPO/S_TRTYPEIO_STR-DISTFAC sy-vline 
WA_/SAPAPO/S_TRTYPEIO_STR-FIXTIME sy-vline 
WA_/SAPAPO/S_TRTYPEIO_STR-AVGWTIME sy-vline 
WA_/SAPAPO/S_TRTYPEIO_STR-COMPTFLG sy-vline 
WA_/SAPAPO/S_TRTYPEIO_STR-TRMODE sy-vline 
WA_/SAPAPO/S_TRTYPEIO_STR-OWNTTYPFLG sy-vline 
WA_/SAPAPO/S_TRTYPEIO_STR-RESNAME sy-vline 
WA_/SAPAPO/S_TRTYPEIO_STR-TTCONNFLG sy-vline 
WA_/SAPAPO/S_TRTYPEIO_STR-TSWFLG sy-vline 
WA_/SAPAPO/S_TRTYPEIO_STR-IGS_QUALITY sy-vline 
WA_/SAPAPO/S_TRTYPEIO_STR-VELO_LOW sy-vline 
WA_/SAPAPO/S_TRTYPEIO_STR-VELO_MEDIUM sy-vline 
WA_/SAPAPO/S_TRTYPEIO_STR-VELO_HIGH sy-vline 
WA_/SAPAPO/S_TRTYPEIO_STR-LOAD_WEIGHT sy-vline 
WA_/SAPAPO/S_TRTYPEIO_STR-LOAD_UOM_WGT sy-vline 
WA_/SAPAPO/S_TRTYPEIO_STR-LOAD_VOLUME sy-vline 
WA_/SAPAPO/S_TRTYPEIO_STR-LOAD_UOM_VOL sy-vline 
WA_/SAPAPO/S_TRTYPEIO_STR-LOAD_LENGTH sy-vline 
WA_/SAPAPO/S_TRTYPEIO_STR-LOAD_WIDTH sy-vline 
WA_/SAPAPO/S_TRTYPEIO_STR-LOAD_HEIGHT sy-vline 
WA_/SAPAPO/S_TRTYPEIO_STR-LOAD_UOM_LWH sy-vline 
WA_/SAPAPO/S_TRTYPEIO_STR-DGMOT sy-vline 
WA_/SAPAPO/S_TRTYPEIO_STR-TTYPE_PARENT sy-vline 
WA_/SAPAPO/S_TRTYPEIO_STR-TTYPETXT_PARENT sy-vline      INTO ld_text SEPARATED BY SPACE.

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