ABAP Select data from SAP table P12EGOV_DAQ_S_EGFILE into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP P12EGOV_DAQ_S_EGFILE 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 P12EGOV_DAQ_S_EGFILE. 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 P12EGOV_DAQ_S_EGFILE 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_P12EGOV_DAQ_S_EGFILE TYPE STANDARD TABLE OF P12EGOV_DAQ_S_EGFILE,
      WA_P12EGOV_DAQ_S_EGFILE TYPE P12EGOV_DAQ_S_EGFILE,
      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: <P12EGOV_DAQ_S_EGFILE> TYPE P12EGOV_DAQ_S_EGFILE.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_P12EGOV_DAQ_S_EGFILE.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM P12EGOV_DAQ_S_EGFILE
  INTO TABLE IT_P12EGOV_DAQ_S_EGFILE.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM P12EGOV_DAQ_S_EGFILE
*  INTO TABLE @DATA(IT_P12EGOV_DAQ_S_EGFILE2).
*--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_P12EGOV_DAQ_S_EGFILE INDEX 1 INTO DATA(WA_P12EGOV_DAQ_S_EGFILE2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_P12EGOV_DAQ_S_EGFILE ASSIGNING <P12EGOV_DAQ_S_EGFILE>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<P12EGOV_DAQ_S_EGFILE>-TNAME = 1.
<P12EGOV_DAQ_S_EGFILE>-FORMV = 1.
<P12EGOV_DAQ_S_EGFILE>-DAQDT = 1.
<P12EGOV_DAQ_S_EGFILE>-BEGDA = 1.
<P12EGOV_DAQ_S_EGFILE>-ENDDA = 1.

ENDLOOP.

LOOP AT IT_P12EGOV_DAQ_S_EGFILE INTO WA_P12EGOV_DAQ_S_EGFILE.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_P12EGOV_DAQ_S_EGFILE-GLBID, sy-vline,
  WA_P12EGOV_DAQ_S_EGFILE-FLTYP, sy-vline,
  WA_P12EGOV_DAQ_S_EGFILE-FLIDE, sy-vline,
  WA_P12EGOV_DAQ_S_EGFILE-SNDID, sy-vline,
  WA_P12EGOV_DAQ_S_EGFILE-GENDT, sy-vline,
  WA_P12EGOV_DAQ_S_EGFILE-KYNBR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_P12EGOV_DAQ_S_EGFILE 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_P12EGOV_DAQ_S_EGFILE 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_P12EGOV_DAQ_S_EGFILE INTO WA_P12EGOV_DAQ_S_EGFILE.


*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_P12EGOV_DAQ_S_EGFILE_STR, 
TNAME TYPE STRING,
FORMV TYPE STRING,
DAQDT TYPE STRING,
BEGDA TYPE STRING,
ENDDA TYPE STRING,
GLBID TYPE STRING,
FLTYP TYPE STRING,
FLIDE TYPE STRING,
SNDID TYPE STRING,
GENDT TYPE STRING,
KYNBR TYPE STRING,
EXECM TYPE STRING,
TOTFG TYPE STRING,
FGNBR TYPE STRING,
FNAME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_P12EGOV_DAQ_S_EGFILE_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_P12EGOV_DAQ_S_EGFILE_STR-TNAME sy-vline 
WA_P12EGOV_DAQ_S_EGFILE_STR-FORMV sy-vline 
WA_P12EGOV_DAQ_S_EGFILE_STR-DAQDT sy-vline 
WA_P12EGOV_DAQ_S_EGFILE_STR-BEGDA sy-vline 
WA_P12EGOV_DAQ_S_EGFILE_STR-ENDDA sy-vline 
WA_P12EGOV_DAQ_S_EGFILE_STR-GLBID sy-vline 
WA_P12EGOV_DAQ_S_EGFILE_STR-FLTYP sy-vline 
WA_P12EGOV_DAQ_S_EGFILE_STR-FLIDE sy-vline 
WA_P12EGOV_DAQ_S_EGFILE_STR-SNDID sy-vline 
WA_P12EGOV_DAQ_S_EGFILE_STR-GENDT sy-vline 
WA_P12EGOV_DAQ_S_EGFILE_STR-KYNBR sy-vline 
WA_P12EGOV_DAQ_S_EGFILE_STR-EXECM sy-vline 
WA_P12EGOV_DAQ_S_EGFILE_STR-TOTFG sy-vline 
WA_P12EGOV_DAQ_S_EGFILE_STR-FGNBR sy-vline 
WA_P12EGOV_DAQ_S_EGFILE_STR-FNAME sy-vline      INTO ld_text SEPARATED BY SPACE.

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