ABAP Select data from SAP table LMOCDL_VV into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM LMOCDL_VV
*  INTO TABLE @DATA(IT_LMOCDL_VV2).
*--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_LMOCDL_VV INDEX 1 INTO DATA(WA_LMOCDL_VV2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<LMOCDL_VV>-OBCLS = 1.
<LMOCDL_VV>-PACLS = 1.
<LMOCDL_VV>-SRVCE = 1.
<LMOCDL_VV>-OBSTY = 1.
<LMOCDL_VV>-OBJSR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_LMOCDL_VV-IMGCC, sy-vline,
  WA_LMOCDL_VV-IMGCO, sy-vline,
  WA_LMOCDL_VV-IMGOB, sy-vline,
  WA_LMOCDL_VV-REPID, sy-vline,
  WA_LMOCDL_VV-ROOTC, sy-vline,
  WA_LMOCDL_VV-SLCTF, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_LMOCDL_VV 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_LMOCDL_VV 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_LMOCDL_VV INTO WA_LMOCDL_VV.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_LMOCDL_VV_STR, 
OBCLS TYPE STRING,
PACLS TYPE STRING,
SRVCE TYPE STRING,
OBSTY TYPE STRING,
OBJSR TYPE STRING,
IMGCC TYPE STRING,
IMGCO TYPE STRING,
IMGOB TYPE STRING,
REPID TYPE STRING,
ROOTC TYPE STRING,
SLCTF TYPE STRING,
SLSTR TYPE STRING,
STEXT TYPE STRING,
SCTIT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_LMOCDL_VV_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_LMOCDL_VV_STR-OBCLS sy-vline 
WA_LMOCDL_VV_STR-PACLS sy-vline 
WA_LMOCDL_VV_STR-SRVCE sy-vline 
WA_LMOCDL_VV_STR-OBSTY sy-vline 
WA_LMOCDL_VV_STR-OBJSR sy-vline 
WA_LMOCDL_VV_STR-IMGCC sy-vline 
WA_LMOCDL_VV_STR-IMGCO sy-vline 
WA_LMOCDL_VV_STR-IMGOB sy-vline 
WA_LMOCDL_VV_STR-REPID sy-vline 
WA_LMOCDL_VV_STR-ROOTC sy-vline 
WA_LMOCDL_VV_STR-SLCTF sy-vline 
WA_LMOCDL_VV_STR-SLSTR sy-vline 
WA_LMOCDL_VV_STR-STEXT sy-vline 
WA_LMOCDL_VV_STR-SCTIT sy-vline      INTO ld_text SEPARATED BY SPACE.

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