ABAP Select data from SAP table /LTB/TR_UP_LOG into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /LTB/TR_UP_LOG
*  INTO TABLE @DATA(IT_/LTB/TR_UP_LOG2).
*--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_/LTB/TR_UP_LOG INDEX 1 INTO DATA(WA_/LTB/TR_UP_LOG2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
</LTB/TR_UP_LOG>-MANDT = 1.
</LTB/TR_UP_LOG>-TIMESTAMP = 1.
</LTB/TR_UP_LOG>-UPLOAD_USER = 1.
</LTB/TR_UP_LOG>-UPLOAD_SYSID = 1.
</LTB/TR_UP_LOG>-UPLOAD_CLIENT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/LTB/TR_UP_LOG-ID, sy-vline,
  WA_/LTB/TR_UP_LOG-NAME, sy-vline,
  WA_/LTB/TR_UP_LOG-DESCR, sy-vline,
  WA_/LTB/TR_UP_LOG-TYPE, sy-vline,
  WA_/LTB/TR_UP_LOG-DMIS_RELEASE, sy-vline,
  WA_/LTB/TR_UP_LOG-DMIS_SP, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/LTB/TR_UP_LOG 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_/LTB/TR_UP_LOG 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_/LTB/TR_UP_LOG INTO WA_/LTB/TR_UP_LOG.


*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_/LTB/TR_UP_LOG_STR, 
MANDT TYPE STRING,
TIMESTAMP TYPE STRING,
UPLOAD_USER TYPE STRING,
UPLOAD_SYSID TYPE STRING,
UPLOAD_CLIENT TYPE STRING,
ID TYPE STRING,
NAME TYPE STRING,
DESCR TYPE STRING,
TYPE TYPE STRING,
DMIS_RELEASE TYPE STRING,
DMIS_SP TYPE STRING,
INSTALLATION TYPE STRING,
SOURCE_SYSID TYPE STRING,
SOURCE_CLIENT TYPE STRING,
SOURCE_USER TYPE STRING,
TRULES_INCLUDED TYPE STRING,
UPLOAD_STATUS TYPE STRING,
UPLOAD_LOGNR TYPE STRING,
XML TYPE STRING,
FILE_USER TYPE STRING,
UPLOAD_TIMESTAMP TYPE STRING,
UPLOAD_JOBCOUNT TYPE STRING,
ZIP TYPE STRING,
AUTO_ACTIVATE TYPE STRING,
CLEAR_EVM TYPE STRING,
FILE_NAME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/LTB/TR_UP_LOG_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_/LTB/TR_UP_LOG_STR-MANDT sy-vline 
WA_/LTB/TR_UP_LOG_STR-TIMESTAMP sy-vline 
WA_/LTB/TR_UP_LOG_STR-UPLOAD_USER sy-vline 
WA_/LTB/TR_UP_LOG_STR-UPLOAD_SYSID sy-vline 
WA_/LTB/TR_UP_LOG_STR-UPLOAD_CLIENT sy-vline 
WA_/LTB/TR_UP_LOG_STR-ID sy-vline 
WA_/LTB/TR_UP_LOG_STR-NAME sy-vline 
WA_/LTB/TR_UP_LOG_STR-DESCR sy-vline 
WA_/LTB/TR_UP_LOG_STR-TYPE sy-vline 
WA_/LTB/TR_UP_LOG_STR-DMIS_RELEASE sy-vline 
WA_/LTB/TR_UP_LOG_STR-DMIS_SP sy-vline 
WA_/LTB/TR_UP_LOG_STR-INSTALLATION sy-vline 
WA_/LTB/TR_UP_LOG_STR-SOURCE_SYSID sy-vline 
WA_/LTB/TR_UP_LOG_STR-SOURCE_CLIENT sy-vline 
WA_/LTB/TR_UP_LOG_STR-SOURCE_USER sy-vline 
WA_/LTB/TR_UP_LOG_STR-TRULES_INCLUDED sy-vline 
WA_/LTB/TR_UP_LOG_STR-UPLOAD_STATUS sy-vline 
WA_/LTB/TR_UP_LOG_STR-UPLOAD_LOGNR sy-vline 
WA_/LTB/TR_UP_LOG_STR-XML sy-vline 
WA_/LTB/TR_UP_LOG_STR-FILE_USER sy-vline 
WA_/LTB/TR_UP_LOG_STR-UPLOAD_TIMESTAMP sy-vline 
WA_/LTB/TR_UP_LOG_STR-UPLOAD_JOBCOUNT sy-vline 
WA_/LTB/TR_UP_LOG_STR-ZIP sy-vline 
WA_/LTB/TR_UP_LOG_STR-AUTO_ACTIVATE sy-vline 
WA_/LTB/TR_UP_LOG_STR-CLEAR_EVM sy-vline 
WA_/LTB/TR_UP_LOG_STR-FILE_NAME sy-vline      INTO ld_text SEPARATED BY SPACE.

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