ABAP Select data from SAP table P02F_OUTPUT_MELAP_565 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP P02F_OUTPUT_MELAP_565 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 P02F_OUTPUT_MELAP_565. 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 P02F_OUTPUT_MELAP_565 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_P02F_OUTPUT_MELAP_565 TYPE STANDARD TABLE OF P02F_OUTPUT_MELAP_565,
      WA_P02F_OUTPUT_MELAP_565 TYPE P02F_OUTPUT_MELAP_565,
      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: <P02F_OUTPUT_MELAP_565> TYPE P02F_OUTPUT_MELAP_565.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_P02F_OUTPUT_MELAP_565.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM P02F_OUTPUT_MELAP_565
  INTO TABLE IT_P02F_OUTPUT_MELAP_565.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM P02F_OUTPUT_MELAP_565
*  INTO TABLE @DATA(IT_P02F_OUTPUT_MELAP_5652).
*--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_P02F_OUTPUT_MELAP_565 INDEX 1 INTO DATA(WA_P02F_OUTPUT_MELAP_5652).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_P02F_OUTPUT_MELAP_565 ASSIGNING <P02F_OUTPUT_MELAP_565>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<P02F_OUTPUT_MELAP_565>-PERNR = 1.
<P02F_OUTPUT_MELAP_565>-NACHN = 1.
<P02F_OUTPUT_MELAP_565>-VORNA = 1.
<P02F_OUTPUT_MELAP_565>-KASSE = 1.
<P02F_OUTPUT_MELAP_565>-PLACE = 1.

ENDLOOP.

LOOP AT IT_P02F_OUTPUT_MELAP_565 INTO WA_P02F_OUTPUT_MELAP_565.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_P02F_OUTPUT_MELAP_565-CPK_NAME, sy-vline,
  WA_P02F_OUTPUT_MELAP_565-CPK_EMAIL, sy-vline,
  WA_P02F_OUTPUT_MELAP_565-CPK_TELNR, sy-vline,
  WA_P02F_OUTPUT_MELAP_565-DOSSIERNR, sy-vline,
  WA_P02F_OUTPUT_MELAP_565-CRE_NAME, sy-vline,
  WA_P02F_OUTPUT_MELAP_565-PF_NAME, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_P02F_OUTPUT_MELAP_565 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_P02F_OUTPUT_MELAP_565 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_P02F_OUTPUT_MELAP_565 INTO WA_P02F_OUTPUT_MELAP_565.


*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_P02F_OUTPUT_MELAP_565_STR, 
PERNR TYPE STRING,
NACHN TYPE STRING,
VORNA TYPE STRING,
KASSE TYPE STRING,
PLACE TYPE STRING,
CPK_NAME TYPE STRING,
CPK_EMAIL TYPE STRING,
CPK_TELNR TYPE STRING,
DOSSIERNR TYPE STRING,
CRE_NAME TYPE STRING,
PF_NAME TYPE STRING,
PF_ADDRESS_1 TYPE STRING,
PF_ADDRESS_2 TYPE STRING,
PF_POSTCODE TYPE STRING,
PF_PLACE TYPE STRING,
PF_COUNTRY TYPE STRING,
REGIO TYPE STRING,
FORM_TYPE TYPE STRING,
MESS_NO TYPE STRING,
CPH_NAME TYPE STRING,
CPH_ADDRESS TYPE STRING,
CPH_ZIPCODE TYPE STRING,
CPH_DIR_PAY TYPE STRING,
CPH_CITY TYPE STRING,
INS_OASI_SI_NO TYPE STRING,
INS_SURNAME TYPE STRING,
INS_FIRST_NAME TYPE STRING,
INS_BIRTHDATE TYPE STRING,
INS_ADDRESS TYPE STRING,
INS_ZIPCODE TYPE STRING,
INS_CITY TYPE STRING,
INS_CANTON TYPE STRING,
ENT_OASI_SI_NO TYPE STRING,
ENT_SURNAME TYPE STRING,
ENT_FIRST_NAME TYPE STRING,
ENT_BIRTHDATE TYPE STRING,
ENT_ADDRESS TYPE STRING,
ENT_ZIPCODE TYPE STRING,
ENT_CITY TYPE STRING,
ENT_CANTON TYPE STRING,
IN_POL_NO TYPE STRING,
IN_PRE_TYPE TYPE STRING,
IN_EVENT_DAT TYPE STRING,
IN_FIRST_PEN TYPE STRING,
IN_INCR_PEN TYPE STRING,
PAY_PEN_YEAR TYPE STRING,
PAY_PEN_OLD_AGE TYPE STRING,
PAY_WIDOW_PEN TYPE STRING,
PAY_II_PEN TYPE STRING,
PAY_ORPHAN_PEN TYPE STRING,
PAY_CHILD_PEN TYPE STRING,
PAY_ADD TYPE STRING,
DESC_ADD TYPE STRING,
PAY_COMMENT TYPE STRING,
ADM_SIGN_CITY TYPE STRING,
ADM_SIGN_DATE TYPE STRING,
ADM_SIGN_NAME TYPE STRING,
ADM_REPL_DATE TYPE STRING,
ADM_COMP_NAME TYPE STRING,
ADM_COMP_ADDR1 TYPE STRING,
ADM_COMP_ADDR2 TYPE STRING,
ADM_COMP_ZIP TYPE STRING,
ADM_COMP_CITY TYPE STRING,
ADM_COUNTRY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_P02F_OUTPUT_MELAP_565_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_P02F_OUTPUT_MELAP_565_STR-PERNR sy-vline 
WA_P02F_OUTPUT_MELAP_565_STR-NACHN sy-vline 
WA_P02F_OUTPUT_MELAP_565_STR-VORNA sy-vline 
WA_P02F_OUTPUT_MELAP_565_STR-KASSE sy-vline 
WA_P02F_OUTPUT_MELAP_565_STR-PLACE sy-vline 
WA_P02F_OUTPUT_MELAP_565_STR-CPK_NAME sy-vline 
WA_P02F_OUTPUT_MELAP_565_STR-CPK_EMAIL sy-vline 
WA_P02F_OUTPUT_MELAP_565_STR-CPK_TELNR sy-vline 
WA_P02F_OUTPUT_MELAP_565_STR-DOSSIERNR sy-vline 
WA_P02F_OUTPUT_MELAP_565_STR-CRE_NAME sy-vline 
WA_P02F_OUTPUT_MELAP_565_STR-PF_NAME sy-vline 
WA_P02F_OUTPUT_MELAP_565_STR-PF_ADDRESS_1 sy-vline 
WA_P02F_OUTPUT_MELAP_565_STR-PF_ADDRESS_2 sy-vline 
WA_P02F_OUTPUT_MELAP_565_STR-PF_POSTCODE sy-vline 
WA_P02F_OUTPUT_MELAP_565_STR-PF_PLACE sy-vline 
WA_P02F_OUTPUT_MELAP_565_STR-PF_COUNTRY sy-vline 
WA_P02F_OUTPUT_MELAP_565_STR-REGIO sy-vline 
WA_P02F_OUTPUT_MELAP_565_STR-FORM_TYPE sy-vline 
WA_P02F_OUTPUT_MELAP_565_STR-MESS_NO sy-vline 
WA_P02F_OUTPUT_MELAP_565_STR-CPH_NAME sy-vline 
WA_P02F_OUTPUT_MELAP_565_STR-CPH_ADDRESS sy-vline 
WA_P02F_OUTPUT_MELAP_565_STR-CPH_ZIPCODE sy-vline 
WA_P02F_OUTPUT_MELAP_565_STR-CPH_DIR_PAY sy-vline 
WA_P02F_OUTPUT_MELAP_565_STR-CPH_CITY sy-vline 
WA_P02F_OUTPUT_MELAP_565_STR-INS_OASI_SI_NO sy-vline 
WA_P02F_OUTPUT_MELAP_565_STR-INS_SURNAME sy-vline 
WA_P02F_OUTPUT_MELAP_565_STR-INS_FIRST_NAME sy-vline 
WA_P02F_OUTPUT_MELAP_565_STR-INS_BIRTHDATE sy-vline 
WA_P02F_OUTPUT_MELAP_565_STR-INS_ADDRESS sy-vline 
WA_P02F_OUTPUT_MELAP_565_STR-INS_ZIPCODE sy-vline 
WA_P02F_OUTPUT_MELAP_565_STR-INS_CITY sy-vline 
WA_P02F_OUTPUT_MELAP_565_STR-INS_CANTON sy-vline 
WA_P02F_OUTPUT_MELAP_565_STR-ENT_OASI_SI_NO sy-vline 
WA_P02F_OUTPUT_MELAP_565_STR-ENT_SURNAME sy-vline 
WA_P02F_OUTPUT_MELAP_565_STR-ENT_FIRST_NAME sy-vline 
WA_P02F_OUTPUT_MELAP_565_STR-ENT_BIRTHDATE sy-vline 
WA_P02F_OUTPUT_MELAP_565_STR-ENT_ADDRESS sy-vline 
WA_P02F_OUTPUT_MELAP_565_STR-ENT_ZIPCODE sy-vline 
WA_P02F_OUTPUT_MELAP_565_STR-ENT_CITY sy-vline 
WA_P02F_OUTPUT_MELAP_565_STR-ENT_CANTON sy-vline 
WA_P02F_OUTPUT_MELAP_565_STR-IN_POL_NO sy-vline 
WA_P02F_OUTPUT_MELAP_565_STR-IN_PRE_TYPE sy-vline 
WA_P02F_OUTPUT_MELAP_565_STR-IN_EVENT_DAT sy-vline 
WA_P02F_OUTPUT_MELAP_565_STR-IN_FIRST_PEN sy-vline 
WA_P02F_OUTPUT_MELAP_565_STR-IN_INCR_PEN sy-vline 
WA_P02F_OUTPUT_MELAP_565_STR-PAY_PEN_YEAR sy-vline 
WA_P02F_OUTPUT_MELAP_565_STR-PAY_PEN_OLD_AGE sy-vline 
WA_P02F_OUTPUT_MELAP_565_STR-PAY_WIDOW_PEN sy-vline 
WA_P02F_OUTPUT_MELAP_565_STR-PAY_II_PEN sy-vline 
WA_P02F_OUTPUT_MELAP_565_STR-PAY_ORPHAN_PEN sy-vline 
WA_P02F_OUTPUT_MELAP_565_STR-PAY_CHILD_PEN sy-vline 
WA_P02F_OUTPUT_MELAP_565_STR-PAY_ADD sy-vline 
WA_P02F_OUTPUT_MELAP_565_STR-DESC_ADD sy-vline 
WA_P02F_OUTPUT_MELAP_565_STR-PAY_COMMENT sy-vline 
WA_P02F_OUTPUT_MELAP_565_STR-ADM_SIGN_CITY sy-vline 
WA_P02F_OUTPUT_MELAP_565_STR-ADM_SIGN_DATE sy-vline 
WA_P02F_OUTPUT_MELAP_565_STR-ADM_SIGN_NAME sy-vline 
WA_P02F_OUTPUT_MELAP_565_STR-ADM_REPL_DATE sy-vline 
WA_P02F_OUTPUT_MELAP_565_STR-ADM_COMP_NAME sy-vline 
WA_P02F_OUTPUT_MELAP_565_STR-ADM_COMP_ADDR1 sy-vline 
WA_P02F_OUTPUT_MELAP_565_STR-ADM_COMP_ADDR2 sy-vline 
WA_P02F_OUTPUT_MELAP_565_STR-ADM_COMP_ZIP sy-vline 
WA_P02F_OUTPUT_MELAP_565_STR-ADM_COMP_CITY sy-vline 
WA_P02F_OUTPUT_MELAP_565_STR-ADM_COUNTRY sy-vline      INTO ld_text SEPARATED BY SPACE.

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