ABAP Select data from SAP table UCSCSTLOGICALV into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM UCSCSTLOGICALV
*  INTO TABLE @DATA(IT_UCSCSTLOGICALV2).
*--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_UCSCSTLOGICALV INDEX 1 INTO DATA(WA_UCSCSTLOGICALV2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<UCSCSTLOGICALV>-VERSION = 1.
<UCSCSTLOGICALV>-CU1_SID = 1.
<UCSCSTLOGICALV>-CU2_SID = 1.
<UCSCSTLOGICALV>-TASK_SID = 1.
<UCSCSTLOGICALV>-NRLCH = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_UCSCSTLOGICALV-DCHIND, sy-vline,
  WA_UCSCSTLOGICALV-STATUS, sy-vline,
  WA_UCSCSTLOGICALV-ERROR, sy-vline,
  WA_UCSCSTLOGICALV-WARNG, sy-vline,
  WA_UCSCSTLOGICALV-CHUSER, sy-vline,
  WA_UCSCSTLOGICALV-CHDATE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_UCSCSTLOGICALV 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_UCSCSTLOGICALV 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_UCSCSTLOGICALV INTO WA_UCSCSTLOGICALV.


*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_UCSCSTLOGICALV_STR, 
VERSION TYPE STRING,
CU1_SID TYPE STRING,
CU2_SID TYPE STRING,
TASK_SID TYPE STRING,
NRLCH TYPE STRING,
DCHIND TYPE STRING,
STATUS TYPE STRING,
ERROR TYPE STRING,
WARNG TYPE STRING,
CHUSER TYPE STRING,
CHDATE TYPE STRING,
CHTIME TYPE STRING,
STATWFID TYPE STRING,
CU1_TEXT TYPE STRING,
CU2_TEXT TYPE STRING,
TASK TYPE STRING,
STATUST TYPE STRING,
STATUS_ICON TYPE STRING,
UPD TYPE STRING,
DBINDEX TYPE STRING,END OF T_EKKO_STR.
DATA: WA_UCSCSTLOGICALV_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_UCSCSTLOGICALV_STR-VERSION sy-vline 
WA_UCSCSTLOGICALV_STR-CU1_SID sy-vline 
WA_UCSCSTLOGICALV_STR-CU2_SID sy-vline 
WA_UCSCSTLOGICALV_STR-TASK_SID sy-vline 
WA_UCSCSTLOGICALV_STR-NRLCH sy-vline 
WA_UCSCSTLOGICALV_STR-DCHIND sy-vline 
WA_UCSCSTLOGICALV_STR-STATUS sy-vline 
WA_UCSCSTLOGICALV_STR-ERROR sy-vline 
WA_UCSCSTLOGICALV_STR-WARNG sy-vline 
WA_UCSCSTLOGICALV_STR-CHUSER sy-vline 
WA_UCSCSTLOGICALV_STR-CHDATE sy-vline 
WA_UCSCSTLOGICALV_STR-CHTIME sy-vline 
WA_UCSCSTLOGICALV_STR-STATWFID sy-vline 
WA_UCSCSTLOGICALV_STR-CU1_TEXT sy-vline 
WA_UCSCSTLOGICALV_STR-CU2_TEXT sy-vline 
WA_UCSCSTLOGICALV_STR-TASK sy-vline 
WA_UCSCSTLOGICALV_STR-STATUST sy-vline 
WA_UCSCSTLOGICALV_STR-STATUS_ICON sy-vline 
WA_UCSCSTLOGICALV_STR-UPD sy-vline 
WA_UCSCSTLOGICALV_STR-DBINDEX sy-vline      INTO ld_text SEPARATED BY SPACE.

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