ABAP Select data from SAP table USLOGOND into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM USLOGOND
*  INTO TABLE @DATA(IT_USLOGOND2).
*--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_USLOGOND INDEX 1 INTO DATA(WA_USLOGOND2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<USLOGOND>-GLTGV = 1.
<USLOGOND>-GLTGB = 1.
<USLOGOND>-USTYP = 1.
<USLOGOND>-CLASS = 1.
<USLOGOND>-ACCNT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_USLOGOND-TZONE, sy-vline,
  WA_USLOGOND-LTIME, sy-vline,
  WA_USLOGOND-BCODE, sy-vline,
  WA_USLOGOND-CODVN, sy-vline,
  WA_USLOGOND-PASSCODE, sy-vline,
  WA_USLOGOND-CODVC, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_USLOGOND 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_USLOGOND 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_USLOGOND INTO WA_USLOGOND.


*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.

*Conversion exit USTYP, internal->external for field USTYP
CALL FUNCTION 'CONVERSION_EXIT_USTYP_OUTPUT'
  EXPORTING
    input =                      WA_USLOGOND-USTYP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_USLOGOND-USTYP.
WRITE:/ 'New Value:', ld_input.
ENDFORM. 

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

TYPES: BEGIN OF T_USLOGOND_STR, 
GLTGV TYPE STRING,
GLTGB TYPE STRING,
USTYP TYPE STRING,
CLASS TYPE STRING,
ACCNT TYPE STRING,
TZONE TYPE STRING,
LTIME TYPE STRING,
BCODE TYPE STRING,
CODVN TYPE STRING,
PASSCODE TYPE STRING,
CODVC TYPE STRING,
PWDSALTEDHASH TYPE STRING,
CODVS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_USLOGOND_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_USLOGOND_STR-GLTGV sy-vline 
WA_USLOGOND_STR-GLTGB sy-vline 
WA_USLOGOND_STR-USTYP sy-vline 
WA_USLOGOND_STR-CLASS sy-vline 
WA_USLOGOND_STR-ACCNT sy-vline 
WA_USLOGOND_STR-TZONE sy-vline 
WA_USLOGOND_STR-LTIME sy-vline 
WA_USLOGOND_STR-BCODE sy-vline 
WA_USLOGOND_STR-CODVN sy-vline 
WA_USLOGOND_STR-PASSCODE sy-vline 
WA_USLOGOND_STR-CODVC sy-vline 
WA_USLOGOND_STR-PWDSALTEDHASH sy-vline 
WA_USLOGOND_STR-CODVS sy-vline      INTO ld_text SEPARATED BY SPACE.

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