ABAP Select data from SAP table LUECSL_DMEE_V2017 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP LUECSL_DMEE_V2017 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 LUECSL_DMEE_V2017. 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 LUECSL_DMEE_V2017 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_LUECSL_DMEE_V2017 TYPE STANDARD TABLE OF LUECSL_DMEE_V2017,
      WA_LUECSL_DMEE_V2017 TYPE LUECSL_DMEE_V2017,
      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: <LUECSL_DMEE_V2017> TYPE LUECSL_DMEE_V2017.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_LUECSL_DMEE_V2017.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM LUECSL_DMEE_V2017
  INTO TABLE IT_LUECSL_DMEE_V2017.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM LUECSL_DMEE_V2017
*  INTO TABLE @DATA(IT_LUECSL_DMEE_V20172).
*--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_LUECSL_DMEE_V2017 INDEX 1 INTO DATA(WA_LUECSL_DMEE_V20172).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_LUECSL_DMEE_V2017 ASSIGNING <LUECSL_DMEE_V2017>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<LUECSL_DMEE_V2017>-AGENT_MATRNR = 1.
<LUECSL_DMEE_V2017>-AGENT_RCSNBR = 1.
<LUECSL_DMEE_V2017>-AGENT_VATNUMBER = 1.
<LUECSL_DMEE_V2017>-DECLARER_MARTNR = 1.
<LUECSL_DMEE_V2017>-DECLARER_RCSNBR = 1.

ENDLOOP.

LOOP AT IT_LUECSL_DMEE_V2017 INTO WA_LUECSL_DMEE_V2017.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_LUECSL_DMEE_V2017-DECLARER_VATNUMBER, sy-vline,
  WA_LUECSL_DMEE_V2017-DECLARER_UNIDFR, sy-vline,
  WA_LUECSL_DMEE_V2017-FILE_REFERENCE, sy-vline,
  WA_LUECSL_DMEE_V2017-DECLARATION_TYPE, sy-vline,
  WA_LUECSL_DMEE_V2017-TOTAL_GOODS, sy-vline,
  WA_LUECSL_DMEE_V2017-TOTAL_TRIANGULAR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_LUECSL_DMEE_V2017 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_LUECSL_DMEE_V2017 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_LUECSL_DMEE_V2017 INTO WA_LUECSL_DMEE_V2017.


*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 AU132, internal->external for field TOTAL_GOODS
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_LUECSL_DMEE_V2017-TOTAL_GOODS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_LUECSL_DMEE_V2017-TOTAL_GOODS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field TOTAL_TRIANGULAR
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_LUECSL_DMEE_V2017-TOTAL_TRIANGULAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_LUECSL_DMEE_V2017-TOTAL_TRIANGULAR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field TOTAL_SERVICES
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_LUECSL_DMEE_V2017-TOTAL_SERVICES
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_LUECSL_DMEE_V2017-TOTAL_SERVICES.
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_LUECSL_DMEE_V2017_STR, 
AGENT_MATRNR TYPE STRING,
AGENT_RCSNBR TYPE STRING,
AGENT_VATNUMBER TYPE STRING,
DECLARER_MARTNR TYPE STRING,
DECLARER_RCSNBR TYPE STRING,
DECLARER_VATNUMBER TYPE STRING,
DECLARER_UNIDFR TYPE STRING,
FILE_REFERENCE TYPE STRING,
DECLARATION_TYPE TYPE STRING,
TOTAL_GOODS TYPE STRING,
TOTAL_TRIANGULAR TYPE STRING,
TOTAL_SERVICES TYPE STRING,
REPORT_TYPE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_LUECSL_DMEE_V2017_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_LUECSL_DMEE_V2017_STR-AGENT_MATRNR sy-vline 
WA_LUECSL_DMEE_V2017_STR-AGENT_RCSNBR sy-vline 
WA_LUECSL_DMEE_V2017_STR-AGENT_VATNUMBER sy-vline 
WA_LUECSL_DMEE_V2017_STR-DECLARER_MARTNR sy-vline 
WA_LUECSL_DMEE_V2017_STR-DECLARER_RCSNBR sy-vline 
WA_LUECSL_DMEE_V2017_STR-DECLARER_VATNUMBER sy-vline 
WA_LUECSL_DMEE_V2017_STR-DECLARER_UNIDFR sy-vline 
WA_LUECSL_DMEE_V2017_STR-FILE_REFERENCE sy-vline 
WA_LUECSL_DMEE_V2017_STR-DECLARATION_TYPE sy-vline 
WA_LUECSL_DMEE_V2017_STR-TOTAL_GOODS sy-vline 
WA_LUECSL_DMEE_V2017_STR-TOTAL_TRIANGULAR sy-vline 
WA_LUECSL_DMEE_V2017_STR-TOTAL_SERVICES sy-vline 
WA_LUECSL_DMEE_V2017_STR-REPORT_TYPE sy-vline      INTO ld_text SEPARATED BY SPACE.

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