ABAP Select data from SAP table /ISDFPS/V_LMSTB into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /ISDFPS/V_LMSTB 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 /ISDFPS/V_LMSTB. 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 /ISDFPS/V_LMSTB 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_/ISDFPS/V_LMSTB TYPE STANDARD TABLE OF /ISDFPS/V_LMSTB,
      WA_/ISDFPS/V_LMSTB TYPE /ISDFPS/V_LMSTB,
      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: </ISDFPS/V_LMSTB> TYPE /ISDFPS/V_LMSTB.

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

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /ISDFPS/V_LMSTB
  INTO TABLE IT_/ISDFPS/V_LMSTB.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /ISDFPS/V_LMSTB
*  INTO TABLE @DATA(IT_/ISDFPS/V_LMSTB2).
*--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_/ISDFPS/V_LMSTB INDEX 1 INTO DATA(WA_/ISDFPS/V_LMSTB2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/ISDFPS/V_LMSTB ASSIGNING </ISDFPS/V_LMSTB>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</ISDFPS/V_LMSTB>-MANDT = 1.
</ISDFPS/V_LMSTB>-TCODE = 1.
</ISDFPS/V_LMSTB>-DISPLAY_MODE = 1.
</ISDFPS/V_LMSTB>-PROGNAME = 1.
</ISDFPS/V_LMSTB>-GUI_STATUS = 1.

ENDLOOP.

LOOP AT IT_/ISDFPS/V_LMSTB INTO WA_/ISDFPS/V_LMSTB.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/ISDFPS/V_LMSTB-GUI_TITLE, sy-vline,
  WA_/ISDFPS/V_LMSTB-OPTIMIZE_LEVEL, sy-vline,
  WA_/ISDFPS/V_LMSTB-SUPPRESS_DIALOG, sy-vline,
  WA_/ISDFPS/V_LMSTB-READ_NOTIFS_OLD, sy-vline,
  WA_/ISDFPS/V_LMSTB-READ_ORDERS_OLD, sy-vline,
  WA_/ISDFPS/V_LMSTB-READ_REVS_OLD, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/ISDFPS/V_LMSTB 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_/ISDFPS/V_LMSTB 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_/ISDFPS/V_LMSTB INTO WA_/ISDFPS/V_LMSTB.


*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_/ISDFPS/V_LMSTB_STR, 
MANDT TYPE STRING,
TCODE TYPE STRING,
DISPLAY_MODE TYPE STRING,
PROGNAME TYPE STRING,
GUI_STATUS TYPE STRING,
GUI_TITLE TYPE STRING,
OPTIMIZE_LEVEL TYPE STRING,
SUPPRESS_DIALOG TYPE STRING,
READ_NOTIFS_OLD TYPE STRING,
READ_ORDERS_OLD TYPE STRING,
READ_REVS_OLD TYPE STRING,
READ_MPOS_OLD TYPE STRING,
READ_MDOCS_OLD TYPE STRING,
READ_MPOINTS_OLD TYPE STRING,
SELMODE_READ TYPE STRING,
NO_INDEX_TABLE TYPE STRING,
NO_SING_REG_MEQ TYPE STRING,
NO_STD_RFC_USER TYPE STRING,
NO_INDEX_TABLE_2 TYPE STRING,
AGGREGATE_STATUS TYPE STRING,
NO_SING_REG_TOBJ TYPE STRING,
AUTO_UPD_ALLOWED TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/ISDFPS/V_LMSTB_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_/ISDFPS/V_LMSTB_STR-MANDT sy-vline 
WA_/ISDFPS/V_LMSTB_STR-TCODE sy-vline 
WA_/ISDFPS/V_LMSTB_STR-DISPLAY_MODE sy-vline 
WA_/ISDFPS/V_LMSTB_STR-PROGNAME sy-vline 
WA_/ISDFPS/V_LMSTB_STR-GUI_STATUS sy-vline 
WA_/ISDFPS/V_LMSTB_STR-GUI_TITLE sy-vline 
WA_/ISDFPS/V_LMSTB_STR-OPTIMIZE_LEVEL sy-vline 
WA_/ISDFPS/V_LMSTB_STR-SUPPRESS_DIALOG sy-vline 
WA_/ISDFPS/V_LMSTB_STR-READ_NOTIFS_OLD sy-vline 
WA_/ISDFPS/V_LMSTB_STR-READ_ORDERS_OLD sy-vline 
WA_/ISDFPS/V_LMSTB_STR-READ_REVS_OLD sy-vline 
WA_/ISDFPS/V_LMSTB_STR-READ_MPOS_OLD sy-vline 
WA_/ISDFPS/V_LMSTB_STR-READ_MDOCS_OLD sy-vline 
WA_/ISDFPS/V_LMSTB_STR-READ_MPOINTS_OLD sy-vline 
WA_/ISDFPS/V_LMSTB_STR-SELMODE_READ sy-vline 
WA_/ISDFPS/V_LMSTB_STR-NO_INDEX_TABLE sy-vline 
WA_/ISDFPS/V_LMSTB_STR-NO_SING_REG_MEQ sy-vline 
WA_/ISDFPS/V_LMSTB_STR-NO_STD_RFC_USER sy-vline 
WA_/ISDFPS/V_LMSTB_STR-NO_INDEX_TABLE_2 sy-vline 
WA_/ISDFPS/V_LMSTB_STR-AGGREGATE_STATUS sy-vline 
WA_/ISDFPS/V_LMSTB_STR-NO_SING_REG_TOBJ sy-vline 
WA_/ISDFPS/V_LMSTB_STR-AUTO_UPD_ALLOWED sy-vline      INTO ld_text SEPARATED BY SPACE.

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