ABAP Select data from SAP table UPGDD12L into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP UPGDD12L 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 UPGDD12L. 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 UPGDD12L 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_UPGDD12L TYPE STANDARD TABLE OF UPGDD12L,
      WA_UPGDD12L TYPE UPGDD12L,
      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: <UPGDD12L> TYPE UPGDD12L.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_UPGDD12L.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM UPGDD12L
  INTO TABLE IT_UPGDD12L.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM UPGDD12L
*  INTO TABLE @DATA(IT_UPGDD12L2).
*--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_UPGDD12L INDEX 1 INTO DATA(WA_UPGDD12L2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_UPGDD12L ASSIGNING <UPGDD12L>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<UPGDD12L>-SQLTAB = 1.
<UPGDD12L>-INDEXNAME = 1.
<UPGDD12L>-AS4LOCAL = 1.
<UPGDD12L>-AS4VERS = 1.
<UPGDD12L>-AUTHCLASS = 1.

ENDLOOP.

LOOP AT IT_UPGDD12L INTO WA_UPGDD12L.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_UPGDD12L-UNIQUEFLAG, sy-vline,
  WA_UPGDD12L-AS4USER, sy-vline,
  WA_UPGDD12L-AS4DATE, sy-vline,
  WA_UPGDD12L-AS4TIME, sy-vline,
  WA_UPGDD12L-ACTFLAG, sy-vline,
  WA_UPGDD12L-DBINDEX, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_UPGDD12L 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_UPGDD12L 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_UPGDD12L INTO WA_UPGDD12L.


*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_UPGDD12L_STR, 
SQLTAB TYPE STRING,
INDEXNAME TYPE STRING,
AS4LOCAL TYPE STRING,
AS4VERS TYPE STRING,
AUTHCLASS TYPE STRING,
UNIQUEFLAG TYPE STRING,
AS4USER TYPE STRING,
AS4DATE TYPE STRING,
AS4TIME TYPE STRING,
ACTFLAG TYPE STRING,
DBINDEX TYPE STRING,
DBSTATE TYPE STRING,
DBINCLEXCL TYPE STRING,
DBSYSSEL1 TYPE STRING,
DBSYSSEL2 TYPE STRING,
DBSYSSEL3 TYPE STRING,
DBSYSSEL4 TYPE STRING,
FULL_TEXT TYPE STRING,
LANGU_COLUMN TYPE STRING,
MIME_TYPE_COL TYPE STRING,
MIME_TYPE TYPE STRING,
LANGU_DETECTION TYPE STRING,
FAST_PREPROCESS TYPE STRING,
FUZZY_SEARCH_INDX TYPE STRING,
SEARCH_ONLY TYPE STRING,
UPDATE_MODE TYPE STRING,
CONFIGURATION TYPE STRING,
PHRASE_INDX_RATIO TYPE STRING,
TEXT_ANALYSIS TYPE STRING,
TOKEN_SEPARATORS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_UPGDD12L_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_UPGDD12L_STR-SQLTAB sy-vline 
WA_UPGDD12L_STR-INDEXNAME sy-vline 
WA_UPGDD12L_STR-AS4LOCAL sy-vline 
WA_UPGDD12L_STR-AS4VERS sy-vline 
WA_UPGDD12L_STR-AUTHCLASS sy-vline 
WA_UPGDD12L_STR-UNIQUEFLAG sy-vline 
WA_UPGDD12L_STR-AS4USER sy-vline 
WA_UPGDD12L_STR-AS4DATE sy-vline 
WA_UPGDD12L_STR-AS4TIME sy-vline 
WA_UPGDD12L_STR-ACTFLAG sy-vline 
WA_UPGDD12L_STR-DBINDEX sy-vline 
WA_UPGDD12L_STR-DBSTATE sy-vline 
WA_UPGDD12L_STR-DBINCLEXCL sy-vline 
WA_UPGDD12L_STR-DBSYSSEL1 sy-vline 
WA_UPGDD12L_STR-DBSYSSEL2 sy-vline 
WA_UPGDD12L_STR-DBSYSSEL3 sy-vline 
WA_UPGDD12L_STR-DBSYSSEL4 sy-vline 
WA_UPGDD12L_STR-FULL_TEXT sy-vline 
WA_UPGDD12L_STR-LANGU_COLUMN sy-vline 
WA_UPGDD12L_STR-MIME_TYPE_COL sy-vline 
WA_UPGDD12L_STR-MIME_TYPE sy-vline 
WA_UPGDD12L_STR-LANGU_DETECTION sy-vline 
WA_UPGDD12L_STR-FAST_PREPROCESS sy-vline 
WA_UPGDD12L_STR-FUZZY_SEARCH_INDX sy-vline 
WA_UPGDD12L_STR-SEARCH_ONLY sy-vline 
WA_UPGDD12L_STR-UPDATE_MODE sy-vline 
WA_UPGDD12L_STR-CONFIGURATION sy-vline 
WA_UPGDD12L_STR-PHRASE_INDX_RATIO sy-vline 
WA_UPGDD12L_STR-TEXT_ANALYSIS sy-vline 
WA_UPGDD12L_STR-TOKEN_SEPARATORS sy-vline      INTO ld_text SEPARATED BY SPACE.

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