ABAP Select data from SAP table /TRP/S_CHECK_AVAIL_ITEM_INPUT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /TRP/S_CHECK_AVAIL_ITEM_INPUT
*  INTO TABLE @DATA(IT_/TRP/S_CHECK_AVAIL_ITEM_INPUT2).
*--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_/TRP/S_CHECK_AVAIL_ITEM_INPUT INDEX 1 INTO DATA(WA_/TRP/S_CHECK_AVAIL_ITEM_INPUT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
</TRP/S_CHECK_AVAIL_ITEM_INPUT>-TU_ID = 1.
</TRP/S_CHECK_AVAIL_ITEM_INPUT>-TU_KEY = 1.
</TRP/S_CHECK_AVAIL_ITEM_INPUT>-EP_SRC_LOC_ID = 1.
</TRP/S_CHECK_AVAIL_ITEM_INPUT>-EP_DEST_LOC_ID = 1.
</TRP/S_CHECK_AVAIL_ITEM_INPUT>-EP_SRC_LOC_KEY = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/TRP/S_CHECK_AVAIL_ITEM_INPUT-EP_DEST_LOC_KEY, sy-vline,
  WA_/TRP/S_CHECK_AVAIL_ITEM_INPUT-POL, sy-vline,
  WA_/TRP/S_CHECK_AVAIL_ITEM_INPUT-RESOURCE_TYPE, sy-vline,
  WA_/TRP/S_CHECK_AVAIL_ITEM_INPUT-SHIPPER_ID, sy-vline,
  WA_/TRP/S_CHECK_AVAIL_ITEM_INPUT-QUANTITY, sy-vline,
  WA_/TRP/S_CHECK_AVAIL_ITEM_INPUT-UNIT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/TRP/S_CHECK_AVAIL_ITEM_INPUT 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_/TRP/S_CHECK_AVAIL_ITEM_INPUT 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_/TRP/S_CHECK_AVAIL_ITEM_INPUT INTO WA_/TRP/S_CHECK_AVAIL_ITEM_INPUT.


*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 TU_ID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/TRP/S_CHECK_AVAIL_ITEM_INPUT-TU_ID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/TRP/S_CHECK_AVAIL_ITEM_INPUT-TU_ID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ID004, internal->external for field EP_SRC_LOC_KEY
CALL FUNCTION 'CONVERSION_EXIT_ID004_OUTPUT'
  EXPORTING
    input =                      WA_/TRP/S_CHECK_AVAIL_ITEM_INPUT-EP_SRC_LOC_KEY
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/TRP/S_CHECK_AVAIL_ITEM_INPUT-EP_SRC_LOC_KEY.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ID004, internal->external for field EP_DEST_LOC_KEY
CALL FUNCTION 'CONVERSION_EXIT_ID004_OUTPUT'
  EXPORTING
    input =                      WA_/TRP/S_CHECK_AVAIL_ITEM_INPUT-EP_DEST_LOC_KEY
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/TRP/S_CHECK_AVAIL_ITEM_INPUT-EP_DEST_LOC_KEY.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SHIPPER_ID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/TRP/S_CHECK_AVAIL_ITEM_INPUT-SHIPPER_ID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/TRP/S_CHECK_AVAIL_ITEM_INPUT-SHIPPER_ID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit QTYRN, internal->external for field QUANTITY
CALL FUNCTION 'CONVERSION_EXIT_QTYRN_OUTPUT'
  EXPORTING
    input =                      WA_/TRP/S_CHECK_AVAIL_ITEM_INPUT-QUANTITY
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/TRP/S_CHECK_AVAIL_ITEM_INPUT-QUANTITY.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ALPHA, internal->external for field CUSTOMER_CODE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/TRP/S_CHECK_AVAIL_ITEM_INPUT-CUSTOMER_CODE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/TRP/S_CHECK_AVAIL_ITEM_INPUT-CUSTOMER_CODE.
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_/TRP/S_CHECK_AVAIL_ITEM_INPUT_STR, 
TU_ID TYPE STRING,
TU_KEY TYPE STRING,
EP_SRC_LOC_ID TYPE STRING,
EP_DEST_LOC_ID TYPE STRING,
EP_SRC_LOC_KEY TYPE STRING,
EP_DEST_LOC_KEY TYPE STRING,
POL TYPE STRING,
RESOURCE_TYPE TYPE STRING,
SHIPPER_ID TYPE STRING,
QUANTITY TYPE STRING,
UNIT TYPE STRING,
MOT TYPE STRING,
MEANS_OF_TRANSPORTATION TYPE STRING,
PICKUP_DATE TYPE STRING,
RELEVANT_PLANNING TYPE STRING,
CUSTOMER_CODE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/TRP/S_CHECK_AVAIL_ITEM_INPUT_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_/TRP/S_CHECK_AVAIL_ITEM_INPUT_STR-TU_ID sy-vline 
WA_/TRP/S_CHECK_AVAIL_ITEM_INPUT_STR-TU_KEY sy-vline 
WA_/TRP/S_CHECK_AVAIL_ITEM_INPUT_STR-EP_SRC_LOC_ID sy-vline 
WA_/TRP/S_CHECK_AVAIL_ITEM_INPUT_STR-EP_DEST_LOC_ID sy-vline 
WA_/TRP/S_CHECK_AVAIL_ITEM_INPUT_STR-EP_SRC_LOC_KEY sy-vline 
WA_/TRP/S_CHECK_AVAIL_ITEM_INPUT_STR-EP_DEST_LOC_KEY sy-vline 
WA_/TRP/S_CHECK_AVAIL_ITEM_INPUT_STR-POL sy-vline 
WA_/TRP/S_CHECK_AVAIL_ITEM_INPUT_STR-RESOURCE_TYPE sy-vline 
WA_/TRP/S_CHECK_AVAIL_ITEM_INPUT_STR-SHIPPER_ID sy-vline 
WA_/TRP/S_CHECK_AVAIL_ITEM_INPUT_STR-QUANTITY sy-vline 
WA_/TRP/S_CHECK_AVAIL_ITEM_INPUT_STR-UNIT sy-vline 
WA_/TRP/S_CHECK_AVAIL_ITEM_INPUT_STR-MOT sy-vline 
WA_/TRP/S_CHECK_AVAIL_ITEM_INPUT_STR-MEANS_OF_TRANSPORTATION sy-vline 
WA_/TRP/S_CHECK_AVAIL_ITEM_INPUT_STR-PICKUP_DATE sy-vline 
WA_/TRP/S_CHECK_AVAIL_ITEM_INPUT_STR-RELEVANT_PLANNING sy-vline 
WA_/TRP/S_CHECK_AVAIL_ITEM_INPUT_STR-CUSTOMER_CODE sy-vline      INTO ld_text SEPARATED BY SPACE.

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