ABAP Select data from SAP table /SAPAPO/S_TRALVIO 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_TRALVIO 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_TRALVIO. 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_TRALVIO 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_TRALVIO TYPE STANDARD TABLE OF /SAPAPO/S_TRALVIO,
      WA_/SAPAPO/S_TRALVIO TYPE /SAPAPO/S_TRALVIO,
      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_TRALVIO> TYPE /SAPAPO/S_TRALVIO.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SAPAPO/S_TRALVIO
*  INTO TABLE @DATA(IT_/SAPAPO/S_TRALVIO2).
*--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_TRALVIO INDEX 1 INTO DATA(WA_/SAPAPO/S_TRALVIO2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SAPAPO/S_TRALVIO>-LOCNOFR = 1.
</SAPAPO/S_TRALVIO>-LOCNOTO = 1.
</SAPAPO/S_TRALVIO>-TRNAME = 1.
</SAPAPO/S_TRALVIO>-TRLID = 1.
</SAPAPO/S_TRALVIO>-TRTEXT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SAPAPO/S_TRALVIO-PLANNER, sy-vline,
  WA_/SAPAPO/S_TRALVIO-OPCAL, sy-vline,
  WA_/SAPAPO/S_TRALVIO-COMM_DURA, sy-vline,
  WA_/SAPAPO/S_TRALVIO-ORDF_PERD, sy-vline,
  WA_/SAPAPO/S_TRALVIO-INCLUDE, sy-vline,
  WA_/SAPAPO/S_TRALVIO-DPL_WGT_LIM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SAPAPO/S_TRALVIO 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_TRALVIO 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_TRALVIO INTO WA_/SAPAPO/S_TRALVIO.


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

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

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

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

*Conversion exit CUNIT, internal->external for field DPL_LWH_UOM
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_/SAPAPO/S_TRALVIO-DPL_LWH_UOM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPAPO/S_TRALVIO-DPL_LWH_UOM.
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_TRALVIO_STR, 
LOCNOFR TYPE STRING,
LOCNOTO TYPE STRING,
TRNAME TYPE STRING,
TRLID TYPE STRING,
TRTEXT TYPE STRING,
PLANNER TYPE STRING,
OPCAL TYPE STRING,
COMM_DURA TYPE STRING,
ORDF_PERD TYPE STRING,
INCLUDE TYPE STRING,
DPL_WGT_LIM TYPE STRING,
DPL_WGT_UOM TYPE STRING,
DPL_VOL_LIM TYPE STRING,
DPL_VOL_UOM TYPE STRING,
DPL_LWH_LIM TYPE STRING,
DPL_LWH_UOM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SAPAPO/S_TRALVIO_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_TRALVIO_STR-LOCNOFR sy-vline 
WA_/SAPAPO/S_TRALVIO_STR-LOCNOTO sy-vline 
WA_/SAPAPO/S_TRALVIO_STR-TRNAME sy-vline 
WA_/SAPAPO/S_TRALVIO_STR-TRLID sy-vline 
WA_/SAPAPO/S_TRALVIO_STR-TRTEXT sy-vline 
WA_/SAPAPO/S_TRALVIO_STR-PLANNER sy-vline 
WA_/SAPAPO/S_TRALVIO_STR-OPCAL sy-vline 
WA_/SAPAPO/S_TRALVIO_STR-COMM_DURA sy-vline 
WA_/SAPAPO/S_TRALVIO_STR-ORDF_PERD sy-vline 
WA_/SAPAPO/S_TRALVIO_STR-INCLUDE sy-vline 
WA_/SAPAPO/S_TRALVIO_STR-DPL_WGT_LIM sy-vline 
WA_/SAPAPO/S_TRALVIO_STR-DPL_WGT_UOM sy-vline 
WA_/SAPAPO/S_TRALVIO_STR-DPL_VOL_LIM sy-vline 
WA_/SAPAPO/S_TRALVIO_STR-DPL_VOL_UOM sy-vline 
WA_/SAPAPO/S_TRALVIO_STR-DPL_LWH_LIM sy-vline 
WA_/SAPAPO/S_TRALVIO_STR-DPL_LWH_UOM sy-vline      INTO ld_text SEPARATED BY SPACE.

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