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

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SAPAPO/LOC_TPSRC_RETURN_S
*  INTO TABLE @DATA(IT_/SAPAPO/LOC_TPSRC_RETURN_S2).
*--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/LOC_TPSRC_RETURN_S INDEX 1 INTO DATA(WA_/SAPAPO/LOC_TPSRC_RETURN_S2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SAPAPO/LOC_TPSRC_RETURN_S>-LOCID = 1.
</SAPAPO/LOC_TPSRC_RETURN_S>-TYPE = 1.
</SAPAPO/LOC_TPSRC_RETURN_S>-ID = 1.
</SAPAPO/LOC_TPSRC_RETURN_S>-NUMBER = 1.
</SAPAPO/LOC_TPSRC_RETURN_S>-MESSAGE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SAPAPO/LOC_TPSRC_RETURN_S-LOG_NO, sy-vline,
  WA_/SAPAPO/LOC_TPSRC_RETURN_S-LOG_MSG_NO, sy-vline,
  WA_/SAPAPO/LOC_TPSRC_RETURN_S-MESSAGE_V1, sy-vline,
  WA_/SAPAPO/LOC_TPSRC_RETURN_S-MESSAGE_V2, sy-vline,
  WA_/SAPAPO/LOC_TPSRC_RETURN_S-MESSAGE_V3, sy-vline,
  WA_/SAPAPO/LOC_TPSRC_RETURN_S-MESSAGE_V4, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SAPAPO/LOC_TPSRC_RETURN_S 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/LOC_TPSRC_RETURN_S 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/LOC_TPSRC_RETURN_S INTO WA_/SAPAPO/LOC_TPSRC_RETURN_S.


*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 ALPHA, internal->external for field SYSTEM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/SAPAPO/LOC_TPSRC_RETURN_S-SYSTEM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPAPO/LOC_TPSRC_RETURN_S-SYSTEM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LOGSYS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/SAPAPO/LOC_TPSRC_RETURN_S-LOGSYS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPAPO/LOC_TPSRC_RETURN_S-LOGSYS.
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/LOC_TPSRC_RETURN_S_STR, 
LOCID TYPE STRING,
TYPE TYPE STRING,
ID TYPE STRING,
NUMBER TYPE STRING,
MESSAGE TYPE STRING,
LOG_NO TYPE STRING,
LOG_MSG_NO TYPE STRING,
MESSAGE_V1 TYPE STRING,
MESSAGE_V2 TYPE STRING,
MESSAGE_V3 TYPE STRING,
MESSAGE_V4 TYPE STRING,
PARAMETER TYPE STRING,
ROW TYPE STRING,
FIELD TYPE STRING,
SYSTEM TYPE STRING,
LOCFR TYPE STRING,
LOCTO TYPE STRING,
EBELN TYPE STRING,
EBELP TYPE STRING,
LOGSYS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SAPAPO/LOC_TPSRC_RETURN_S_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/LOC_TPSRC_RETURN_S_STR-LOCID sy-vline 
WA_/SAPAPO/LOC_TPSRC_RETURN_S_STR-TYPE sy-vline 
WA_/SAPAPO/LOC_TPSRC_RETURN_S_STR-ID sy-vline 
WA_/SAPAPO/LOC_TPSRC_RETURN_S_STR-NUMBER sy-vline 
WA_/SAPAPO/LOC_TPSRC_RETURN_S_STR-MESSAGE sy-vline 
WA_/SAPAPO/LOC_TPSRC_RETURN_S_STR-LOG_NO sy-vline 
WA_/SAPAPO/LOC_TPSRC_RETURN_S_STR-LOG_MSG_NO sy-vline 
WA_/SAPAPO/LOC_TPSRC_RETURN_S_STR-MESSAGE_V1 sy-vline 
WA_/SAPAPO/LOC_TPSRC_RETURN_S_STR-MESSAGE_V2 sy-vline 
WA_/SAPAPO/LOC_TPSRC_RETURN_S_STR-MESSAGE_V3 sy-vline 
WA_/SAPAPO/LOC_TPSRC_RETURN_S_STR-MESSAGE_V4 sy-vline 
WA_/SAPAPO/LOC_TPSRC_RETURN_S_STR-PARAMETER sy-vline 
WA_/SAPAPO/LOC_TPSRC_RETURN_S_STR-ROW sy-vline 
WA_/SAPAPO/LOC_TPSRC_RETURN_S_STR-FIELD sy-vline 
WA_/SAPAPO/LOC_TPSRC_RETURN_S_STR-SYSTEM sy-vline 
WA_/SAPAPO/LOC_TPSRC_RETURN_S_STR-LOCFR sy-vline 
WA_/SAPAPO/LOC_TPSRC_RETURN_S_STR-LOCTO sy-vline 
WA_/SAPAPO/LOC_TPSRC_RETURN_S_STR-EBELN sy-vline 
WA_/SAPAPO/LOC_TPSRC_RETURN_S_STR-EBELP sy-vline 
WA_/SAPAPO/LOC_TPSRC_RETURN_S_STR-LOGSYS sy-vline      INTO ld_text SEPARATED BY SPACE.

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