ABAP Select data from SAP table DTINF_S_GALILEI_MAPPING 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_GALILEI_MAPPING 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_GALILEI_MAPPING. 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_GALILEI_MAPPING 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_GALILEI_MAPPING TYPE STANDARD TABLE OF DTINF_S_GALILEI_MAPPING,
      WA_DTINF_S_GALILEI_MAPPING TYPE DTINF_S_GALILEI_MAPPING,
      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_GALILEI_MAPPING> TYPE DTINF_S_GALILEI_MAPPING.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DTINF_S_GALILEI_MAPPING
*  INTO TABLE @DATA(IT_DTINF_S_GALILEI_MAPPING2).
*--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_GALILEI_MAPPING INDEX 1 INTO DATA(WA_DTINF_S_GALILEI_MAPPING2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<DTINF_S_GALILEI_MAPPING>-GUID = 1.
<DTINF_S_GALILEI_MAPPING>-NAME = 1.
<DTINF_S_GALILEI_MAPPING>-TYPE = 1.
<DTINF_S_GALILEI_MAPPING>-SYSTEM = 1.
<DTINF_S_GALILEI_MAPPING>-CLIENT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_DTINF_S_GALILEI_MAPPING-TC, sy-vline,
  WA_DTINF_S_GALILEI_MAPPING-TABLE, sy-vline,
  WA_DTINF_S_GALILEI_MAPPING-FIELD, sy-vline,
  WA_DTINF_S_GALILEI_MAPPING-SYSTEM2, sy-vline,
  WA_DTINF_S_GALILEI_MAPPING-CLIENT2, sy-vline,
  WA_DTINF_S_GALILEI_MAPPING-TC2, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_DTINF_S_GALILEI_MAPPING 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_GALILEI_MAPPING 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_GALILEI_MAPPING INTO WA_DTINF_S_GALILEI_MAPPING.


*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_GALILEI_MAPPING_STR, 
GUID TYPE STRING,
NAME TYPE STRING,
TYPE TYPE STRING,
SYSTEM TYPE STRING,
CLIENT TYPE STRING,
TC TYPE STRING,
TABLE TYPE STRING,
FIELD TYPE STRING,
SYSTEM2 TYPE STRING,
CLIENT2 TYPE STRING,
TC2 TYPE STRING,
TABLE2 TYPE STRING,
FIELD2 TYPE STRING,
DELETED TYPE STRING,
FINAL TYPE STRING,
READONLY TYPE STRING,
FUNCNAME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_DTINF_S_GALILEI_MAPPING_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_GALILEI_MAPPING_STR-GUID sy-vline 
WA_DTINF_S_GALILEI_MAPPING_STR-NAME sy-vline 
WA_DTINF_S_GALILEI_MAPPING_STR-TYPE sy-vline 
WA_DTINF_S_GALILEI_MAPPING_STR-SYSTEM sy-vline 
WA_DTINF_S_GALILEI_MAPPING_STR-CLIENT sy-vline 
WA_DTINF_S_GALILEI_MAPPING_STR-TC sy-vline 
WA_DTINF_S_GALILEI_MAPPING_STR-TABLE sy-vline 
WA_DTINF_S_GALILEI_MAPPING_STR-FIELD sy-vline 
WA_DTINF_S_GALILEI_MAPPING_STR-SYSTEM2 sy-vline 
WA_DTINF_S_GALILEI_MAPPING_STR-CLIENT2 sy-vline 
WA_DTINF_S_GALILEI_MAPPING_STR-TC2 sy-vline 
WA_DTINF_S_GALILEI_MAPPING_STR-TABLE2 sy-vline 
WA_DTINF_S_GALILEI_MAPPING_STR-FIELD2 sy-vline 
WA_DTINF_S_GALILEI_MAPPING_STR-DELETED sy-vline 
WA_DTINF_S_GALILEI_MAPPING_STR-FINAL sy-vline 
WA_DTINF_S_GALILEI_MAPPING_STR-READONLY sy-vline 
WA_DTINF_S_GALILEI_MAPPING_STR-FUNCNAME sy-vline      INTO ld_text SEPARATED BY SPACE.

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