ABAP Select data from SAP table FC01LMDLV0 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP FC01LMDLV0 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 FC01LMDLV0. 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 FC01LMDLV0 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_FC01LMDLV0 TYPE STANDARD TABLE OF FC01LMDLV0,
      WA_FC01LMDLV0 TYPE FC01LMDLV0,
      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: <FC01LMDLV0> TYPE FC01LMDLV0.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_FC01LMDLV0.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM FC01LMDLV0
  INTO TABLE IT_FC01LMDLV0.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FC01LMDLV0
*  INTO TABLE @DATA(IT_FC01LMDLV02).
*--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_FC01LMDLV0 INDEX 1 INTO DATA(WA_FC01LMDLV02).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_FC01LMDLV0 ASSIGNING <FC01LMDLV0>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FC01LMDLV0>-DIMEN = 1.
<FC01LMDLV0>-BUNIT = 1.
<FC01LMDLV0>-HRES1 = 1.
<FC01LMDLV0>-HRES2 = 1.
<FC01LMDLV0>-NHFLG = 1.

ENDLOOP.

LOOP AT IT_FC01LMDLV0 INTO WA_FC01LMDLV0.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FC01LMDLV0-BYEAR, sy-vline,
  WA_FC01LMDLV0-BPERI, sy-vline,
  WA_FC01LMDLV0-TXTLG, sy-vline,
  WA_FC01LMDLV0-PRIOY, sy-vline,
  WA_FC01LMDLV0-DDYRS, sy-vline,
  WA_FC01LMDLV0-DDPER, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FC01LMDLV0 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_FC01LMDLV0 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_FC01LMDLV0 INTO WA_FC01LMDLV0.


*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 AFIMC, internal->external for field BUNIT
CALL FUNCTION 'CONVERSION_EXIT_AFIMC_OUTPUT'
  EXPORTING
    input =                      WA_FC01LMDLV0-BUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FC01LMDLV0-BUNIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field BYEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_FC01LMDLV0-BYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FC01LMDLV0-BYEAR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit BFIMC, internal->external for field AQDIT
CALL FUNCTION 'CONVERSION_EXIT_BFIMC_OUTPUT'
  EXPORTING
    input =                      WA_FC01LMDLV0-AQDIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FC01LMDLV0-AQDIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit BFIMC, internal->external for field AQCIT
CALL FUNCTION 'CONVERSION_EXIT_BFIMC_OUTPUT'
  EXPORTING
    input =                      WA_FC01LMDLV0-AQCIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FC01LMDLV0-AQCIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit BFIMC, internal->external for field AMDIT
CALL FUNCTION 'CONVERSION_EXIT_BFIMC_OUTPUT'
  EXPORTING
    input =                      WA_FC01LMDLV0-AMDIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FC01LMDLV0-AMDIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit BFIMC, internal->external for field AMCIT
CALL FUNCTION 'CONVERSION_EXIT_BFIMC_OUTPUT'
  EXPORTING
    input =                      WA_FC01LMDLV0-AMCIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FC01LMDLV0-AMCIT.
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_FC01LMDLV0_STR, 
DIMEN TYPE STRING,
BUNIT TYPE STRING,
HRES1 TYPE STRING,
HRES2 TYPE STRING,
NHFLG TYPE STRING,
BYEAR TYPE STRING,
BPERI TYPE STRING,
TXTLG TYPE STRING,
PRIOY TYPE STRING,
DDYRS TYPE STRING,
DDPER TYPE STRING,
DMETH TYPE STRING,
DPCNT TYPE STRING,
AQDIT TYPE STRING,
AQCIT TYPE STRING,
AMDIT TYPE STRING,
AMCIT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FC01LMDLV0_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_FC01LMDLV0_STR-DIMEN sy-vline 
WA_FC01LMDLV0_STR-BUNIT sy-vline 
WA_FC01LMDLV0_STR-HRES1 sy-vline 
WA_FC01LMDLV0_STR-HRES2 sy-vline 
WA_FC01LMDLV0_STR-NHFLG sy-vline 
WA_FC01LMDLV0_STR-BYEAR sy-vline 
WA_FC01LMDLV0_STR-BPERI sy-vline 
WA_FC01LMDLV0_STR-TXTLG sy-vline 
WA_FC01LMDLV0_STR-PRIOY sy-vline 
WA_FC01LMDLV0_STR-DDYRS sy-vline 
WA_FC01LMDLV0_STR-DDPER sy-vline 
WA_FC01LMDLV0_STR-DMETH sy-vline 
WA_FC01LMDLV0_STR-DPCNT sy-vline 
WA_FC01LMDLV0_STR-AQDIT sy-vline 
WA_FC01LMDLV0_STR-AQCIT sy-vline 
WA_FC01LMDLV0_STR-AMDIT sy-vline 
WA_FC01LMDLV0_STR-AMCIT sy-vline      INTO ld_text SEPARATED BY SPACE.

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