ABAP Select data from SAP table TRFS_LOT_OPEN_MATCH into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP TRFS_LOT_OPEN_MATCH 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 TRFS_LOT_OPEN_MATCH. 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 TRFS_LOT_OPEN_MATCH 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_TRFS_LOT_OPEN_MATCH TYPE STANDARD TABLE OF TRFS_LOT_OPEN_MATCH,
      WA_TRFS_LOT_OPEN_MATCH TYPE TRFS_LOT_OPEN_MATCH,
      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: <TRFS_LOT_OPEN_MATCH> TYPE TRFS_LOT_OPEN_MATCH.

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

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM TRFS_LOT_OPEN_MATCH
  INTO TABLE IT_TRFS_LOT_OPEN_MATCH.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TRFS_LOT_OPEN_MATCH
*  INTO TABLE @DATA(IT_TRFS_LOT_OPEN_MATCH2).
*--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_TRFS_LOT_OPEN_MATCH INDEX 1 INTO DATA(WA_TRFS_LOT_OPEN_MATCH2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_TRFS_LOT_OPEN_MATCH ASSIGNING <TRFS_LOT_OPEN_MATCH>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TRFS_LOT_OPEN_MATCH>-COMPANY_CODE = 1.
<TRFS_LOT_OPEN_MATCH>-CLASS_ID = 1.
<TRFS_LOT_OPEN_MATCH>-PRODUCT_TYPE = 1.
<TRFS_LOT_OPEN_MATCH>-POS_ACCOUNT = 1.
<TRFS_LOT_OPEN_MATCH>-LOT = 1.

ENDLOOP.

LOOP AT IT_TRFS_LOT_OPEN_MATCH INTO WA_TRFS_LOT_OPEN_MATCH.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TRFS_LOT_OPEN_MATCH-FLAG_LONG_SHORT, sy-vline,
  WA_TRFS_LOT_OPEN_MATCH-UNITS, sy-vline,
  WA_TRFS_LOT_OPEN_MATCH-POS_VALUE, sy-vline,
  WA_TRFS_LOT_OPEN_MATCH-POS_CURR, sy-vline,
  WA_TRFS_LOT_OPEN_MATCH-START_VALUE, sy-vline,
  WA_TRFS_LOT_OPEN_MATCH-START_RATE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TRFS_LOT_OPEN_MATCH 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_TRFS_LOT_OPEN_MATCH 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_TRFS_LOT_OPEN_MATCH INTO WA_TRFS_LOT_OPEN_MATCH.


*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 CLASS_ID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_TRFS_LOT_OPEN_MATCH-CLASS_ID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TRFS_LOT_OPEN_MATCH-CLASS_ID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LOTGENERATION_DEALNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_TRFS_LOT_OPEN_MATCH-LOTGENERATION_DEALNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TRFS_LOT_OPEN_MATCH-LOTGENERATION_DEALNR.
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_TRFS_LOT_OPEN_MATCH_STR, 
COMPANY_CODE TYPE STRING,
CLASS_ID TYPE STRING,
PRODUCT_TYPE TYPE STRING,
POS_ACCOUNT TYPE STRING,
LOT TYPE STRING,
FLAG_LONG_SHORT TYPE STRING,
UNITS TYPE STRING,
POS_VALUE TYPE STRING,
POS_CURR TYPE STRING,
START_VALUE TYPE STRING,
START_RATE TYPE STRING,
DLOTGENERATION TYPE STRING,
TLOTGENERATION TYPE STRING,
LOTGENERATION_USER TYPE STRING,
LOTGENERATION_BUSTRANSCAT TYPE STRING,
LOTPOSITION_INIT_DATE TYPE STRING,
LOTPOSITION_ORG_DATE TYPE STRING,
LOTGENERATION_BUKRS TYPE STRING,
LOTGENERATION_DEALNR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TRFS_LOT_OPEN_MATCH_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_TRFS_LOT_OPEN_MATCH_STR-COMPANY_CODE sy-vline 
WA_TRFS_LOT_OPEN_MATCH_STR-CLASS_ID sy-vline 
WA_TRFS_LOT_OPEN_MATCH_STR-PRODUCT_TYPE sy-vline 
WA_TRFS_LOT_OPEN_MATCH_STR-POS_ACCOUNT sy-vline 
WA_TRFS_LOT_OPEN_MATCH_STR-LOT sy-vline 
WA_TRFS_LOT_OPEN_MATCH_STR-FLAG_LONG_SHORT sy-vline 
WA_TRFS_LOT_OPEN_MATCH_STR-UNITS sy-vline 
WA_TRFS_LOT_OPEN_MATCH_STR-POS_VALUE sy-vline 
WA_TRFS_LOT_OPEN_MATCH_STR-POS_CURR sy-vline 
WA_TRFS_LOT_OPEN_MATCH_STR-START_VALUE sy-vline 
WA_TRFS_LOT_OPEN_MATCH_STR-START_RATE sy-vline 
WA_TRFS_LOT_OPEN_MATCH_STR-DLOTGENERATION sy-vline 
WA_TRFS_LOT_OPEN_MATCH_STR-TLOTGENERATION sy-vline 
WA_TRFS_LOT_OPEN_MATCH_STR-LOTGENERATION_USER sy-vline 
WA_TRFS_LOT_OPEN_MATCH_STR-LOTGENERATION_BUSTRANSCAT sy-vline 
WA_TRFS_LOT_OPEN_MATCH_STR-LOTPOSITION_INIT_DATE sy-vline 
WA_TRFS_LOT_OPEN_MATCH_STR-LOTPOSITION_ORG_DATE sy-vline 
WA_TRFS_LOT_OPEN_MATCH_STR-LOTGENERATION_BUKRS sy-vline 
WA_TRFS_LOT_OPEN_MATCH_STR-LOTGENERATION_DEALNR sy-vline      INTO ld_text SEPARATED BY SPACE.

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