ABAP Select data from SAP table LMD_VL_S_VISITLIST_ATTR into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM LMD_VL_S_VISITLIST_ATTR
*  INTO TABLE @DATA(IT_LMD_VL_S_VISITLIST_ATTR2).
*--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_LMD_VL_S_VISITLIST_ATTR INDEX 1 INTO DATA(WA_LMD_VL_S_VISITLIST_ATTR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<LMD_VL_S_VISITLIST_ATTR>-VISIT_LIST_ID = 1.
<LMD_VL_S_VISITLIST_ATTR>-VISIT_LIST_EXT_UUID = 1.
<LMD_VL_S_VISITLIST_ATTR>-VISIT_LIST_EXT_ID = 1.
<LMD_VL_S_VISITLIST_ATTR>-VISIT_LIST_TYPE = 1.
<LMD_VL_S_VISITLIST_ATTR>-DRIVER_ID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_LMD_VL_S_VISITLIST_ATTR-EXECUTION_DATE, sy-vline,
  WA_LMD_VL_S_VISITLIST_ATTR-SALES_ORGANISATION, sy-vline,
  WA_LMD_VL_S_VISITLIST_ATTR-DISTRIBUTION_CHANNEL, sy-vline,
  WA_LMD_VL_S_VISITLIST_ATTR-DIVISION, sy-vline,
  WA_LMD_VL_S_VISITLIST_ATTR-SOURCE_LOCATION, sy-vline,
  WA_LMD_VL_S_VISITLIST_ATTR-DESCRIPTION, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_LMD_VL_S_VISITLIST_ATTR 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_LMD_VL_S_VISITLIST_ATTR 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_LMD_VL_S_VISITLIST_ATTR INTO WA_LMD_VL_S_VISITLIST_ATTR.


*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_LMD_VL_S_VISITLIST_ATTR_STR, 
VISIT_LIST_ID TYPE STRING,
VISIT_LIST_EXT_UUID TYPE STRING,
VISIT_LIST_EXT_ID TYPE STRING,
VISIT_LIST_TYPE TYPE STRING,
DRIVER_ID TYPE STRING,
EXECUTION_DATE TYPE STRING,
SALES_ORGANISATION TYPE STRING,
DISTRIBUTION_CHANNEL TYPE STRING,
DIVISION TYPE STRING,
SOURCE_LOCATION TYPE STRING,
DESCRIPTION TYPE STRING,
LAST_CHANGED_AT TYPE STRING,
EXECUTION_STATUS TYPE STRING,
LIST_TIMEZONE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_LMD_VL_S_VISITLIST_ATTR_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_LMD_VL_S_VISITLIST_ATTR_STR-VISIT_LIST_ID sy-vline 
WA_LMD_VL_S_VISITLIST_ATTR_STR-VISIT_LIST_EXT_UUID sy-vline 
WA_LMD_VL_S_VISITLIST_ATTR_STR-VISIT_LIST_EXT_ID sy-vline 
WA_LMD_VL_S_VISITLIST_ATTR_STR-VISIT_LIST_TYPE sy-vline 
WA_LMD_VL_S_VISITLIST_ATTR_STR-DRIVER_ID sy-vline 
WA_LMD_VL_S_VISITLIST_ATTR_STR-EXECUTION_DATE sy-vline 
WA_LMD_VL_S_VISITLIST_ATTR_STR-SALES_ORGANISATION sy-vline 
WA_LMD_VL_S_VISITLIST_ATTR_STR-DISTRIBUTION_CHANNEL sy-vline 
WA_LMD_VL_S_VISITLIST_ATTR_STR-DIVISION sy-vline 
WA_LMD_VL_S_VISITLIST_ATTR_STR-SOURCE_LOCATION sy-vline 
WA_LMD_VL_S_VISITLIST_ATTR_STR-DESCRIPTION sy-vline 
WA_LMD_VL_S_VISITLIST_ATTR_STR-LAST_CHANGED_AT sy-vline 
WA_LMD_VL_S_VISITLIST_ATTR_STR-EXECUTION_STATUS sy-vline 
WA_LMD_VL_S_VISITLIST_ATTR_STR-LIST_TIMEZONE sy-vline      INTO ld_text SEPARATED BY SPACE.

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