ABAP Select data from SAP table DTINF_S_GENERIC_HEADER into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DTINF_S_GENERIC_HEADER
*  INTO TABLE @DATA(IT_DTINF_S_GENERIC_HEADER2).
*--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_DTINF_S_GENERIC_HEADER INDEX 1 INTO DATA(WA_DTINF_S_GENERIC_HEADER2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<DTINF_S_GENERIC_HEADER>-GUID = 1.
<DTINF_S_GENERIC_HEADER>-NAME = 1.
<DTINF_S_GENERIC_HEADER>-DISPLAYNAME = 1.
<DTINF_S_GENERIC_HEADER>-DISPLAYTEXT = 1.
<DTINF_S_GENERIC_HEADER>-PROCESSES = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_DTINF_S_GENERIC_HEADER-SEQUENCEFLOWS, sy-vline,
  WA_DTINF_S_GENERIC_HEADER-TABLES, sy-vline,
  WA_DTINF_S_GENERIC_HEADER-BUSINESSFUNCTIONS, sy-vline,
  WA_DTINF_S_GENERIC_HEADER-JOINS, sy-vline,
  WA_DTINF_S_GENERIC_HEADER-JOINSFINAL, sy-vline,
  WA_DTINF_S_GENERIC_HEADER-DIAGRAMS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_DTINF_S_GENERIC_HEADER 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_DTINF_S_GENERIC_HEADER 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_DTINF_S_GENERIC_HEADER INTO WA_DTINF_S_GENERIC_HEADER.


*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_DTINF_S_GENERIC_HEADER_STR, 
GUID TYPE STRING,
NAME TYPE STRING,
DISPLAYNAME TYPE STRING,
DISPLAYTEXT TYPE STRING,
PROCESSES TYPE STRING,
SEQUENCEFLOWS TYPE STRING,
TABLES TYPE STRING,
BUSINESSFUNCTIONS TYPE STRING,
JOINS TYPE STRING,
JOINSFINAL TYPE STRING,
DIAGRAMS TYPE STRING,
HEIGHT TYPE STRING,
ISADJUSTTOCONTENT TYPE STRING,
ISDELETED TYPE STRING,
ISREADONLY TYPE STRING,
ISEXPANDED TYPE STRING,
ISENTRYTABLE TYPE STRING,
ISSYSTEM TYPE STRING,
OBJECT TYPE STRING,
WIDTH TYPE STRING,
X TYPE STRING,
Y TYPE STRING,
ZINDEX TYPE STRING,
SOURCE TYPE STRING,
TARGET TYPE STRING,
SYMBOLS TYPE STRING,
COLUMNS TYPE STRING,
DATATYPE TYPE STRING,
SUPPORTEDSOURCEDIRECTIONS TYPE STRING,
SUPPORTEDTARGETDIRECTIONS TYPE STRING,
SOURCESYMBOL TYPE STRING,
TARGETSYMBOL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_DTINF_S_GENERIC_HEADER_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_DTINF_S_GENERIC_HEADER_STR-GUID sy-vline 
WA_DTINF_S_GENERIC_HEADER_STR-NAME sy-vline 
WA_DTINF_S_GENERIC_HEADER_STR-DISPLAYNAME sy-vline 
WA_DTINF_S_GENERIC_HEADER_STR-DISPLAYTEXT sy-vline 
WA_DTINF_S_GENERIC_HEADER_STR-PROCESSES sy-vline 
WA_DTINF_S_GENERIC_HEADER_STR-SEQUENCEFLOWS sy-vline 
WA_DTINF_S_GENERIC_HEADER_STR-TABLES sy-vline 
WA_DTINF_S_GENERIC_HEADER_STR-BUSINESSFUNCTIONS sy-vline 
WA_DTINF_S_GENERIC_HEADER_STR-JOINS sy-vline 
WA_DTINF_S_GENERIC_HEADER_STR-JOINSFINAL sy-vline 
WA_DTINF_S_GENERIC_HEADER_STR-DIAGRAMS sy-vline 
WA_DTINF_S_GENERIC_HEADER_STR-HEIGHT sy-vline 
WA_DTINF_S_GENERIC_HEADER_STR-ISADJUSTTOCONTENT sy-vline 
WA_DTINF_S_GENERIC_HEADER_STR-ISDELETED sy-vline 
WA_DTINF_S_GENERIC_HEADER_STR-ISREADONLY sy-vline 
WA_DTINF_S_GENERIC_HEADER_STR-ISEXPANDED sy-vline 
WA_DTINF_S_GENERIC_HEADER_STR-ISENTRYTABLE sy-vline 
WA_DTINF_S_GENERIC_HEADER_STR-ISSYSTEM sy-vline 
WA_DTINF_S_GENERIC_HEADER_STR-OBJECT sy-vline 
WA_DTINF_S_GENERIC_HEADER_STR-WIDTH sy-vline 
WA_DTINF_S_GENERIC_HEADER_STR-X sy-vline 
WA_DTINF_S_GENERIC_HEADER_STR-Y sy-vline 
WA_DTINF_S_GENERIC_HEADER_STR-ZINDEX sy-vline 
WA_DTINF_S_GENERIC_HEADER_STR-SOURCE sy-vline 
WA_DTINF_S_GENERIC_HEADER_STR-TARGET sy-vline 
WA_DTINF_S_GENERIC_HEADER_STR-SYMBOLS sy-vline 
WA_DTINF_S_GENERIC_HEADER_STR-COLUMNS sy-vline 
WA_DTINF_S_GENERIC_HEADER_STR-DATATYPE sy-vline 
WA_DTINF_S_GENERIC_HEADER_STR-SUPPORTEDSOURCEDIRECTIONS sy-vline 
WA_DTINF_S_GENERIC_HEADER_STR-SUPPORTEDTARGETDIRECTIONS sy-vline 
WA_DTINF_S_GENERIC_HEADER_STR-SOURCESYMBOL sy-vline 
WA_DTINF_S_GENERIC_HEADER_STR-TARGETSYMBOL sy-vline      INTO ld_text SEPARATED BY SPACE.

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