ABAP Select data from SAP table HRPAYIT_S_CERT_ATTESTATO into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM HRPAYIT_S_CERT_ATTESTATO
*  INTO TABLE @DATA(IT_HRPAYIT_S_CERT_ATTESTATO2).
*--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_HRPAYIT_S_CERT_ATTESTATO INDEX 1 INTO DATA(WA_HRPAYIT_S_CERT_ATTESTATO2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<HRPAYIT_S_CERT_ATTESTATO>-CODFISCAZIENDA = 1.
<HRPAYIT_S_CERT_ATTESTATO>-MATRICOLAINPS = 1.
<HRPAYIT_S_CERT_ATTESTATO>-CODSEDE = 1.
<HRPAYIT_S_CERT_ATTESTATO>-IDCERTIFICATO = 1.
<HRPAYIT_S_CERT_ATTESTATO>-MEDICO = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_HRPAYIT_S_CERT_ATTESTATO-CODICEFISCALE, sy-vline,
  WA_HRPAYIT_S_CERT_ATTESTATO-COGNOME, sy-vline,
  WA_HRPAYIT_S_CERT_ATTESTATO-NOME, sy-vline,
  WA_HRPAYIT_S_CERT_ATTESTATO-CODICEREGIONE, sy-vline,
  WA_HRPAYIT_S_CERT_ATTESTATO-CODICEASL, sy-vline,
  WA_HRPAYIT_S_CERT_ATTESTATO-LAVORATORE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_HRPAYIT_S_CERT_ATTESTATO 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_HRPAYIT_S_CERT_ATTESTATO 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_HRPAYIT_S_CERT_ATTESTATO INTO WA_HRPAYIT_S_CERT_ATTESTATO.


*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_HRPAYIT_S_CERT_ATTESTATO_STR, 
CODFISCAZIENDA TYPE STRING,
MATRICOLAINPS TYPE STRING,
CODSEDE TYPE STRING,
IDCERTIFICATO TYPE STRING,
MEDICO TYPE STRING,
CODICEFISCALE TYPE STRING,
COGNOME TYPE STRING,
NOME TYPE STRING,
CODICEREGIONE TYPE STRING,
CODICEASL TYPE STRING,
LAVORATORE TYPE STRING,
COGNOME TYPE STRING,
NOME TYPE STRING,
SESSO TYPE STRING,
CODICEFIS TYPE STRING,
DATANASCI TYPE STRING,
COMUNENAS TYPE STRING,
PROVINCIA TYPE STRING,
CODICEFISCALE TYPE STRING,
COMUNENASCITA TYPE STRING,
PROVINCIANASCITA TYPE STRING,
DATANASCITA TYPE STRING,
RESIDENZA TYPE STRING,
VIA TYPE STRING,
CAP TYPE STRING,
COMUNE TYPE STRING,
PROVINCIA TYPE STRING,
CIV TYPE STRING,
REPERIBILITA TYPE STRING,
COGNOME TYPE STRING,
IND TYPE STRING,
VIA TYPE STRING,
CAP TYPE STRING,
COM TYPE STRING,
PRO TYPE STRING,
CIV TYPE STRING,
INDIRIZZO TYPE STRING,
DATARILASCIO TYPE STRING,
DATAINIZIO TYPE STRING,
DATAFINE TYPE STRING,
TIPOCERTIFICATO TYPE STRING,
IDCERTIFICATORETTIFI TYPE STRING,
IDRETTIFIBY TYPE STRING,
IDCERTIFICATORETTIFICATO TYPE STRING,END OF T_EKKO_STR.
DATA: WA_HRPAYIT_S_CERT_ATTESTATO_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_HRPAYIT_S_CERT_ATTESTATO_STR-CODFISCAZIENDA sy-vline 
WA_HRPAYIT_S_CERT_ATTESTATO_STR-MATRICOLAINPS sy-vline 
WA_HRPAYIT_S_CERT_ATTESTATO_STR-CODSEDE sy-vline 
WA_HRPAYIT_S_CERT_ATTESTATO_STR-IDCERTIFICATO sy-vline 
WA_HRPAYIT_S_CERT_ATTESTATO_STR-MEDICO sy-vline 
WA_HRPAYIT_S_CERT_ATTESTATO_STR-CODICEFISCALE sy-vline 
WA_HRPAYIT_S_CERT_ATTESTATO_STR-COGNOME sy-vline 
WA_HRPAYIT_S_CERT_ATTESTATO_STR-NOME sy-vline 
WA_HRPAYIT_S_CERT_ATTESTATO_STR-CODICEREGIONE sy-vline 
WA_HRPAYIT_S_CERT_ATTESTATO_STR-CODICEASL sy-vline 
WA_HRPAYIT_S_CERT_ATTESTATO_STR-LAVORATORE sy-vline 
WA_HRPAYIT_S_CERT_ATTESTATO_STR-COGNOME sy-vline 
WA_HRPAYIT_S_CERT_ATTESTATO_STR-NOME sy-vline 
WA_HRPAYIT_S_CERT_ATTESTATO_STR-SESSO sy-vline 
WA_HRPAYIT_S_CERT_ATTESTATO_STR-CODICEFIS sy-vline 
WA_HRPAYIT_S_CERT_ATTESTATO_STR-DATANASCI sy-vline 
WA_HRPAYIT_S_CERT_ATTESTATO_STR-COMUNENAS sy-vline 
WA_HRPAYIT_S_CERT_ATTESTATO_STR-PROVINCIA sy-vline 
WA_HRPAYIT_S_CERT_ATTESTATO_STR-CODICEFISCALE sy-vline 
WA_HRPAYIT_S_CERT_ATTESTATO_STR-COMUNENASCITA sy-vline 
WA_HRPAYIT_S_CERT_ATTESTATO_STR-PROVINCIANASCITA sy-vline 
WA_HRPAYIT_S_CERT_ATTESTATO_STR-DATANASCITA sy-vline 
WA_HRPAYIT_S_CERT_ATTESTATO_STR-RESIDENZA sy-vline 
WA_HRPAYIT_S_CERT_ATTESTATO_STR-VIA sy-vline 
WA_HRPAYIT_S_CERT_ATTESTATO_STR-CAP sy-vline 
WA_HRPAYIT_S_CERT_ATTESTATO_STR-COMUNE sy-vline 
WA_HRPAYIT_S_CERT_ATTESTATO_STR-PROVINCIA sy-vline 
WA_HRPAYIT_S_CERT_ATTESTATO_STR-CIV sy-vline 
WA_HRPAYIT_S_CERT_ATTESTATO_STR-REPERIBILITA sy-vline 
WA_HRPAYIT_S_CERT_ATTESTATO_STR-COGNOME sy-vline 
WA_HRPAYIT_S_CERT_ATTESTATO_STR-IND sy-vline 
WA_HRPAYIT_S_CERT_ATTESTATO_STR-VIA sy-vline 
WA_HRPAYIT_S_CERT_ATTESTATO_STR-CAP sy-vline 
WA_HRPAYIT_S_CERT_ATTESTATO_STR-COM sy-vline 
WA_HRPAYIT_S_CERT_ATTESTATO_STR-PRO sy-vline 
WA_HRPAYIT_S_CERT_ATTESTATO_STR-CIV sy-vline 
WA_HRPAYIT_S_CERT_ATTESTATO_STR-INDIRIZZO sy-vline 
WA_HRPAYIT_S_CERT_ATTESTATO_STR-DATARILASCIO sy-vline 
WA_HRPAYIT_S_CERT_ATTESTATO_STR-DATAINIZIO sy-vline 
WA_HRPAYIT_S_CERT_ATTESTATO_STR-DATAFINE sy-vline 
WA_HRPAYIT_S_CERT_ATTESTATO_STR-TIPOCERTIFICATO sy-vline 
WA_HRPAYIT_S_CERT_ATTESTATO_STR-IDCERTIFICATORETTIFI sy-vline 
WA_HRPAYIT_S_CERT_ATTESTATO_STR-IDRETTIFIBY sy-vline 
WA_HRPAYIT_S_CERT_ATTESTATO_STR-IDCERTIFICATORETTIFICATO sy-vline      INTO ld_text SEPARATED BY SPACE.

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