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

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SAPAPO/SHOW_TTYP_TPSRC
*  INTO TABLE @DATA(IT_/SAPAPO/SHOW_TTYP_TPSRC2).
*--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/SHOW_TTYP_TPSRC INDEX 1 INTO DATA(WA_/SAPAPO/SHOW_TTYP_TPSRC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SAPAPO/SHOW_TTYP_TPSRC>-TRMID = 1.
</SAPAPO/SHOW_TTYP_TPSRC>-TTYPE = 1.
</SAPAPO/SHOW_TTYP_TPSRC>-TTYPETXT = 1.
</SAPAPO/SHOW_TTYP_TPSRC>-TRCAL = 1.
</SAPAPO/SHOW_TTYP_TPSRC>-DURAT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SAPAPO/SHOW_TTYP_TPSRC-DIST, sy-vline,
  WA_/SAPAPO/SHOW_TTYP_TPSRC-TCOST, sy-vline,
  WA_/SAPAPO/SHOW_TTYP_TPSRC-TUNIT, sy-vline,
  WA_/SAPAPO/SHOW_TTYP_TPSRC-TCOSTID, sy-vline,
  WA_/SAPAPO/SHOW_TTYP_TPSRC-RESUID, sy-vline,
  WA_/SAPAPO/SHOW_TTYP_TPSRC-TPRID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SAPAPO/SHOW_TTYP_TPSRC 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/SHOW_TTYP_TPSRC 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/SHOW_TTYP_TPSRC INTO WA_/SAPAPO/SHOW_TTYP_TPSRC.


*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 DURAT
CALL FUNCTION 'CONVERSION_EXIT_TSTRN_OUTPUT'
  EXPORTING
    input =                      WA_/SAPAPO/SHOW_TTYP_TPSRC-DURAT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPAPO/SHOW_TTYP_TPSRC-DURAT.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit CUNIT, internal->external for field CUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_/SAPAPO/SHOW_TTYP_TPSRC-CUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPAPO/SHOW_TTYP_TPSRC-CUNIT.
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/SHOW_TTYP_TPSRC_STR, 
TRMID TYPE STRING,
TTYPE TYPE STRING,
TTYPETXT TYPE STRING,
TRCAL TYPE STRING,
DURAT TYPE STRING,
DIST TYPE STRING,
TCOST TYPE STRING,
TUNIT TYPE STRING,
TCOSTID TYPE STRING,
RESUID TYPE STRING,
TPRID TYPE STRING,
TRPMID TYPE STRING,
TSZID TYPE STRING,
CONSU TYPE STRING,
CUNIT TYPE STRING,
STFAC TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SAPAPO/SHOW_TTYP_TPSRC_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/SHOW_TTYP_TPSRC_STR-TRMID sy-vline 
WA_/SAPAPO/SHOW_TTYP_TPSRC_STR-TTYPE sy-vline 
WA_/SAPAPO/SHOW_TTYP_TPSRC_STR-TTYPETXT sy-vline 
WA_/SAPAPO/SHOW_TTYP_TPSRC_STR-TRCAL sy-vline 
WA_/SAPAPO/SHOW_TTYP_TPSRC_STR-DURAT sy-vline 
WA_/SAPAPO/SHOW_TTYP_TPSRC_STR-DIST sy-vline 
WA_/SAPAPO/SHOW_TTYP_TPSRC_STR-TCOST sy-vline 
WA_/SAPAPO/SHOW_TTYP_TPSRC_STR-TUNIT sy-vline 
WA_/SAPAPO/SHOW_TTYP_TPSRC_STR-TCOSTID sy-vline 
WA_/SAPAPO/SHOW_TTYP_TPSRC_STR-RESUID sy-vline 
WA_/SAPAPO/SHOW_TTYP_TPSRC_STR-TPRID sy-vline 
WA_/SAPAPO/SHOW_TTYP_TPSRC_STR-TRPMID sy-vline 
WA_/SAPAPO/SHOW_TTYP_TPSRC_STR-TSZID sy-vline 
WA_/SAPAPO/SHOW_TTYP_TPSRC_STR-CONSU sy-vline 
WA_/SAPAPO/SHOW_TTYP_TPSRC_STR-CUNIT sy-vline 
WA_/SAPAPO/SHOW_TTYP_TPSRC_STR-STFAC sy-vline      INTO ld_text SEPARATED BY SPACE.

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