ABAP Select data from SAP table UPD_S_LTDX into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM UPD_S_LTDX
*  INTO TABLE @DATA(IT_UPD_S_LTDX2).
*--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_UPD_S_LTDX INDEX 1 INTO DATA(WA_UPD_S_LTDX2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<UPD_S_LTDX>-MANDT = 1.
<UPD_S_LTDX>-RELID = 1.
<UPD_S_LTDX>-REPORT = 1.
<UPD_S_LTDX>-HANDLE = 1.
<UPD_S_LTDX>-LOG_GROUP = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_UPD_S_LTDX-USERNAME, sy-vline,
  WA_UPD_S_LTDX-VARIANT, sy-vline,
  WA_UPD_S_LTDX-TYPE, sy-vline,
  WA_UPD_S_LTDX-SRTF2, sy-vline,
  WA_UPD_S_LTDX-VERSION, sy-vline,
  WA_UPD_S_LTDX-ERFDAT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_UPD_S_LTDX 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_UPD_S_LTDX 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_UPD_S_LTDX INTO WA_UPD_S_LTDX.


*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_UPD_S_LTDX_STR, 
MANDT TYPE STRING,
RELID TYPE STRING,
REPORT TYPE STRING,
HANDLE TYPE STRING,
LOG_GROUP TYPE STRING,
USERNAME TYPE STRING,
VARIANT TYPE STRING,
TYPE TYPE STRING,
SRTF2 TYPE STRING,
VERSION TYPE STRING,
ERFDAT TYPE STRING,
ERFTIME TYPE STRING,
ERFNAME TYPE STRING,
AEDAT TYPE STRING,
AETIME TYPE STRING,
AENAME TYPE STRING,
DEPENDVARS TYPE STRING,
INACTIVE TYPE STRING,
CLUSTR TYPE STRING,
CLUSTD TYPE STRING,
UPD_MODE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_UPD_S_LTDX_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_UPD_S_LTDX_STR-MANDT sy-vline 
WA_UPD_S_LTDX_STR-RELID sy-vline 
WA_UPD_S_LTDX_STR-REPORT sy-vline 
WA_UPD_S_LTDX_STR-HANDLE sy-vline 
WA_UPD_S_LTDX_STR-LOG_GROUP sy-vline 
WA_UPD_S_LTDX_STR-USERNAME sy-vline 
WA_UPD_S_LTDX_STR-VARIANT sy-vline 
WA_UPD_S_LTDX_STR-TYPE sy-vline 
WA_UPD_S_LTDX_STR-SRTF2 sy-vline 
WA_UPD_S_LTDX_STR-VERSION sy-vline 
WA_UPD_S_LTDX_STR-ERFDAT sy-vline 
WA_UPD_S_LTDX_STR-ERFTIME sy-vline 
WA_UPD_S_LTDX_STR-ERFNAME sy-vline 
WA_UPD_S_LTDX_STR-AEDAT sy-vline 
WA_UPD_S_LTDX_STR-AETIME sy-vline 
WA_UPD_S_LTDX_STR-AENAME sy-vline 
WA_UPD_S_LTDX_STR-DEPENDVARS sy-vline 
WA_UPD_S_LTDX_STR-INACTIVE sy-vline 
WA_UPD_S_LTDX_STR-CLUSTR sy-vline 
WA_UPD_S_LTDX_STR-CLUSTD sy-vline 
WA_UPD_S_LTDX_STR-UPD_MODE sy-vline      INTO ld_text SEPARATED BY SPACE.

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